(Blank)
1U1DRT-4-2
Dr. ZX / Fault Code
FAULT CODE
ZX160-3 to ZX330-3 CLASS
For details of trouble analyses, refer to “Technical
Manual (Troubleshooting)” for the corresponding
models.
T4-1-1
Dr. ZX / Fault Code
FAULT CODE LIST
MC
Controller Hardware Failure
Fault
Trouble
Code
11000-2 Abnormal EEPROM
11001-2 Abnormal RAM
11002-2 Abnormal A/D Conversion
11003-3 Abnormal Sensor Voltage
11004-2
Abnormal CAN Communication
Cause
Influenced Control
Faulty MC
Faulty MC
Faulty MC
Faulty MC
Faulty Sensor
Faulty Harness
All Control
All Control
All Control
All Control
Faulty MC
Faulty CAN Harness
• Heater Control
(ZX200-3 to ZX330-3 class)
• Speed Sensing Control
• Attachment Operation Speed
Increase Control
• Attachment Operation Speed
Limit Control
• Attachment Pump Torque
Decreases Control
(ZX200-3 to ZX330-3 class)
• Pump 1 Flow Rate Limit Control
• Pump 2 Flow Rate Limit Control
• Attachment Flow Rate Control
(Optional)
• Attachment Valve Selection
(Optional)
• CAN Cycle Data Communication
T4-1-2
Dr. ZX / Fault Code
Symptoms in Machine Operation When Trouble Occurs.
Although the engine control dial
is operated, engine speed does
not change.
• Machine movement is slow.
• The work mode alarm is displayed on the monitor unit.
Remedy for Dr. ZX
Retrial B
Retrial B
Retrial B
Retrial B
Remark
Replace MC
Replace MC
Replace MC
• Check sensor connected to
MC
• Check Harness
• Replace MC
• Check CAN Harness
• Replace MC
Retrial B
T1V1-05-01-102
T4-1-3
Dr. ZX / Fault Code
Engine Failure
Fault
Trouble
Code
11100-2 Abnormal Engine Speed
Cause
Engine Speed: more than 4000
-1
min
Influenced Control
Speed Sensing Control
11101-3
Abnormal Engine Control Dial Voltage: 4.78 V or higher
Sensor High Voltage
Engine Control Dial Control
11101-4
Abnormal Engine Control Dial Voltage: Less than 0.22 V
Sensor Low Voltage
Engine Control Dial Control
T4-1-4
Dr. ZX / Fault Code
Symptoms in Machine OperaRemedy for Dr. ZX
tion When Trouble Occurs.
Machine movement is slow.
Retrial B
(During speed sensing, torque
is reduced.)
• Trouble condition with the Retrial B
key ON: Engine speed is kept
at idle speed.
• Trouble condition with the
key ON: engine speed is kept
at speed immediately before
trouble.
• Trouble condition with the Retrial B
key ON: Engine speed is kept
at idle speed.
• Trouble condition with the
key ON: engine speed is kept
at speed immediately before
trouble.
T4-1-5
Remark
• Check Crank Speed Sensor
• Check Cam Angle Sensor
• Check Harness
• Replace Engine Control Dial
• Check Harness
• Replace Engine Control Dial
Dr. ZX / Fault Code
Pump Failure
Fault
Trouble
Cause
Code
11200-3 Abnormal Pump 1 Delivery Voltage: 4.5 V or higher
Pressure Sensor High Voltage
Influenced Control
• HP Mode Control
• Travel HP Mode Control
• E Mode Control
• Travel Torque-Up Control
• Arm Regenerative Control
• Digging Regenerative Control
• Auto-Power Lift Control
• Travel Motor Swash Angle Control
• HP Mode Control
• Travel HP Mode Control
• E Mode Control
• Travel Torque-Up Control
• Arm Regenerative Control
• Digging Regenerative Control
• Auto-Power Lift Control
• Travel Motor Swash Angle Control
• HP Mode Control
• Travel HP Mode Control
• E Mode Control
• Travel Torque-Up Control
• Arm Regenerative Control
• Digging Regenerative Control
• Travel Motor Swash Angle Control
• HP Mode Control
• Travel HP Mode Control
• E Mode Control
• Travel Torque-Up Control
• Arm Regenerative Control
• Digging Regenerative Control
• Travel Motor Swash Angle Control
11200-4
Abnormal Pump 1 Delivery Voltage: Less than 0.25 V
Pressure Sensor Low Voltage
11202-3
Abnormal Pump 2 Delivery Voltage: 4.5 V or higher
Pressure Sensor High Voltage
11202-4
Abnormal Pump 2 Delivery Voltage: Less than 0.25 V
Pressure Sensor Low Voltage
11206-3
Abnormal Pump 1 Pump Voltage: 4.75 V or higher
Control Pressure Sensor High
Voltage
• E Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Motor Swash Angle Control
11206-4
Abnormal Pump 1 Pump Voltage: Less than 0.25 V
Control Pressure Sensor Low
Voltage
11208-3
Abnormal Pump 2 Pump Voltage: 4.75 V or higher
Control Pressure Sensor High
Voltage
11208-4
Abnormal Pump 2 Pump Voltage: Less than 0.25 V
Control Pressure Sensor Low
Voltage
• E Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Motor Swash Angle Control
• E Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Motor Swash Angle Control
• E Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Motor Swash Angle Control
T4-1-6
Dr. ZX / Fault Code
Symptoms in Machine Operation When
Remedy for Dr. ZX
Trouble Occurs.
• Combined operation of arm roll-in and Retrial B
boom raise or combined operation of
arm-roll-in and swing: Arm speed is
slow.
• Single operation of boom raise: Lifting
force is weak.
• Travel: Slow speed
Remark
• Check Harness
• Replace Pump 1 Delivery Pressure
Sensor
• Combined operation of arm roll-in and Retrial B
boom raise or combined operation of
arm-roll-in and swing: Arm speed is
slow.
• Single operation of boom raise: Lifting
force is weak.
• Travel: Slow speed
• Check Harness
• Replace Pump 1 Delivery Pressure
Sensor
• Combined operation of arm roll-in and
boom raise or combined operation of
arm-roll-in and swing: Arm speed is
slow.
• Travel: Slow speed
Retrial B
• Check Harness
• Replace Pump 2 Delivery Pressure
Sensor
• Combined operation of arm roll-in and
boom raise or combined operation of
arm-roll-in and swing: Arm speed is
slow.
• Travel: Slow speed
Retrial B
• Check Harness
• Replace Pump 2 Delivery Pressure
Sensor
• Although speed operating in E mode Retrial B
returns to P speed, returning speed
becomes low due to this failure.
• Travel: Slow speed
• Check Harness
• Replace Pump 1 Control Pressure
Sensor
• Although speed operating in E mode Retrial B
returns to P speed, returning speed
becomes low due to this failure.
• Travel: Slow speed
• Although speed operating in E mode Retrial B
returns to P speed, returning speed
becomes low due to this failure.
• Travel: Slow speed
• Although speed operating in E mode Retrial B
returns to P speed, returning speed
becomes low due to this failure.
• Travel: Slow speed
• Check Harness
• Replace Pump 1 Control Pressure
Sensor
• Check Harness
• Replace Pump 2 Control Pressure
Sensor
• Check Harness
• Replace Pump 2 Control Pressure
Sensor
T4-1-7
Dr. ZX / Fault Code
Pilot Failure
Fault
Trouble
Cause
Code
11301-3 Abnormal Swing Pilot Pressure Voltage: 4.75 V or higher
Sensor High Voltage
Influenced Control
• Arm Regenerative Control
• Attachment Flow Rate Control
• Swing Alarm Control
11301-4
Abnormal Swing Pilot Pressure Voltage: Less than 0.25 V
Sensor Low Voltage
• Arm Regenerative Control
• Attachment Flow Rate Control
• Swing Alarm Control
11302-3
Abnormal Boom Raise Pilot
Pressure Sensor High Voltage
Voltage: 4.75 V or higher
• HP Mode Control
• Arm Regenerative Control
• Digging Regenerative Control
• Auto-Power Lift Control
• Attachment Flow Rate Control
11302-4
Abnormal Boom Raise Pilot
Pressure Sensor Low Voltage
Voltage: Less than 0.25 V
• HP Mode Control
• Arm Regenerative Control
• Digging Regenerative Control
• Auto-Power Lift Control
• Attachment Flow Rate Control
11303-3
Abnormal Arm Roll-In Pilot
Pressure Sensor High Voltage
Voltage: 4.75 V or higher
• HP Mode Control
• Arm Regenerative Control
• Digging Regenerative Control
• Auto-Power Lift Control
11303-4
Abnormal Arm Roll-In Pilot
Pressure Sensor Low Voltage
Voltage: Less than 0.25 V
• HP Mode Control
• Arm Regenerative Control
• Digging Regenerative Control
• Auto-Power Lift Control
T4-1-8
Dr. ZX / Fault Code
Symptoms in Machine Operation When Trouble Occurs.
• Combined
operation
of
arm-roll-in and swing: Arm
speed is slow.
• In case of the machine
equipped with the swing
alarm (optional) and when
swing alarm is effective,
swing alarm continues to
ring.
• Combined
operation
of
arm-roll-in and swing: Arm
speed is slow.
• In case of the machine
equipped with the swing
alarm (optional) and when
swing alarm is effective,
swing alarm continues to
ring.
• During HP control, boom
raise speed does not increase.
• Combined operation of arm
roll-in and boom raise: Arm
speed is slow.
• During HP control, boom
raise speed does not increase.
• Combined operation of arm
roll-in and boom raise: Arm
speed is slow.
• During HP control, arm roll-in
speed does not increase.
• Combined operation of arm
roll-in and swing: Arm speed
is slow.
• During HP control, arm roll-in
speed does not increase.
• Combined operation of arm
roll-in and swing: Arm speed
is slow.
Remedy for Dr. ZX
Remark
Retrial B
• Check Harness
• Replace Swing Pilot Pressure
Sensor
Retrial B
• Check Harness
• Replace Swing Pilot Pressure
Sensor
Retrial B
• Check Harness
• Replace Boom Raise Pilot
Pressure Sensor
Retrial B
• Check Harness
• Replace Boom Raise Pilot
Pressure Sensor
Retrial B
• Check Harness
• Replace Arm Roll-In
Pressure Sensor
Pilot
• Check Harness
• Replace Arm Roll-In
Pressure Sensor
Pilot
Retrial B
T4-1-9
Dr. ZX / Fault Code
Fault
Code
11304-3
11304-4
Trouble
Cause
Abnormal Travel Pilot Pressure Voltage: 4.75 V or higher
Sensor High Voltage
Abnormal Travel Pilot Pressure Voltage: Less than 0.25 V
Sensor Low Voltage
T4-1-10
Influenced Control
• Auto-Idle Control
• Idle Speed-Up Control
• ECO Control
• Travel HP Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Torque-Up Control
• Pump 1 Flow Rate Limit Control
• Pump 1 Flow Rate Control Valve
at Travel (ZX160-3 Class Only)
• Pump 2 Flow Rate Limit Control
• Pump 2 Flow Rate Control Valve
at Travel (ZX160-3 Class Only)
• Travel Motor Swash Angle Control
• Attachment Flow Rate Control
• Travel Alarm Control
• Auto-Idle Control
• Idle Speed-Up Control
• ECO Control
• Travel HP Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Torque-Up Control
• Pump 1 Flow Rate Limit Control
• Pump 1 Flow Rate Control Valve
at Travel (ZX160-3 Class Only)
• Pump 2 Flow Rate Limit Control
• Pump 2 Flow Rate Control Valve
at Travel (ZX160-3 Class Only)
• Travel Motor Swash Angle Control
• Attachment Flow Rate Control
• Travel Alarm Control
Dr. ZX / Fault Code
Symptoms in Machine Operation When
Remedy for Dr. ZX
Trouble Occurs.
• When traveling at idle speed, engine Retrial B
speed does not increase to the specification.
• When traveling, speed does not return
from auto idle speed.
• When traveling, speed does not return
from ECO speed.
• Travel: Slow speed
• When operating ATT, the machine mistracks.
• In case of the machine equipped with
the travel alarm (optional), travel alarm
continues to ring.
• When traveling at idle speed, engine Retrial B
speed does not increase to the specification.
• When traveling, speed does not return
from auto idle speed.
• When traveling, speed does not return
from ECO speed.
• Travel: Slow speed
• When operating ATT, the machine mistracks.
• In case of the machine equipped with
the travel alarm (optional), travel alarm
continues to ring.
T4-1-11
Remark
• Check Harness
• Replace Travel Pilot Pressure
Sensor
• Check Harness
• Replace Travel Pilot Pressure
Sensor
Dr. ZX / Fault Code
Fault
Code
11307-3
11307-4
Trouble
Cause
Influenced Control
Abnormal Front Attachment Pi- Voltage: 4.75 V or higher
lot Pressure Sensor High
Voltage
• Auto-Idle Control
• Idle Speed-Up Control
• ECO Control
• Travel HP Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Motor Swash Angle Control
Abnormal Front Attachment Pi- Voltage: Less than 0.25 V
lot Pressure Sensor Low
Voltage
• Auto-Idle Control
• Idle Speed-Up Control
• ECO Control
• Travel HP Mode Control
• Heater Control
(ZX200-3 to ZX330-3 class)
• Travel Motor Swash Angle Control
T4-1-12
Dr. ZX / Fault Code
Symptoms in Machine Operation When
Remedy for Dr. ZX
Trouble Occurs.
• When operating the front attachment at Retrial B
idle speed, engine speed does not increase to the specification.
• When operating the front attachment,
speed does not return from auto idle
speed.
• When operating the front attachment,
speed does not return from ECO speed.
• Although the front attachment is operated, travel becomes fast.
• When operating the front attachment at Retrial B
idle speed, engine speed does not increase to the specification.
• When operating the front attachment,
speed does not return from auto idle
speed.
• When operating the front attachment,
speed does not return from ECO speed.
• Although the front attachment is operated, travel becomes fast.
T4-1-13
Remark
• Check Harness
• Replace Front Pilot Pressure
Sensor
• Check Harness
• Replace Front Pilot Pressure
Sensor
Dr. ZX / Fault Code
Proportional Solenoid Valve Failure
Fault
Trouble
Code
11400-2 Abnormal Current Feedback of
Maximum Pump 2 Flow Rate Limit
Control Solenoid Valve
11400-3 Abnormal Feedback High Current of
Maximum Pump 2 Flow Rate Limit
Control Solenoid Valve
11400-4
11401-2
11401-3
11401-4
11402-2
11402-3
11402-4
11403-2
11403-3
11403-4
Cause
Influenced Control
Current: Both of Higher
than 920 mA or Less
than 60 mA
Current: Higher than
920 mA
• Pump 2 Flow Rate Limit Control
• Pump 2 Flow Rate Control Valve
at Travel (ZX160-3 class only)
• Pump 2 Flow Rate Limit Control
• Pump 2 Flow Rate Control Valve
at Travel (ZX160-3 class only)
Current: Less than 56 • Pump 2 Flow Rate Limit Control
mA
• Pump 2 Flow Rate Control Valve
at Travel (ZX160-3 class only)
Current: Both of Higher • Speed Sensing Control
than 920 mA or Less • Travel Torque-Up Control
than 60 mA
• Attachment Pump Torque
Decrease Control
(ZX200-3 to ZX330-3 class)
Abnormal Feedback High Current of Current: Higher than • Speed Sensing Control
Torque Control Solenoid Valve
920 mA
• Travel Torque-Up Control
• Attachment Pump Torque
Decrease Control
(ZX200-3 to ZX330-3 class)
Abnormal Feedback Low Current of Current: Less than 56 • Speed Sensing Control
Torque Control Solenoid Valve
mA
• Travel Torque-Up Control
• Attachment Pump Torque
Decrease Control
(ZX200-3 to ZX330-3 class)
Abnormal Current Feedback of So- Current: Both of Higher Digging Regenerative Control
lenoid Valve Unit (SF) (Digging than 920 mA or Less
Regeneration)
than 60 mA
Abnormal Feedback High Current of Current: Higher than Digging Regenerative Control
Solenoid Valve Unit (SF) (Digging 920 mA
Regeneration)
Abnormal Feedback Low Current of Current: Less than 56 Digging Regenerative Control
Solenoid Valve Unit (SF) (Digging mA
Regeneration)
Abnormal Current Feedback of So- Current: Both of Higher Arm Regenerative Control
lenoid Valve Unit (SC) (Arm than 920 mA or Less
Regeneration)
than 60 mA
Abnormal Feedback High Current of Current: Higher than Arm Regenerative Control
Solenoid Valve Unit (SC) (Arm Re- 920 mA
generation)
Abnormal Feedback Low Current of Current: Less than 56 Arm Regenerative Control
Solenoid Valve Unit (SC) (Arm Re- mA
generation)
Abnormal Feedback Low Current of
Maximum Pump 2 Flow Rate Limit
Control Solenoid Valve
Abnormal Current Feedback of
Torque Control Solenoid Valve
T4-1-14
Dr. ZX / Fault Code
Remedy for
Dr. ZX
Retrial B
• Check Harness
Actual Operation of Proportional Valve during High Current:
• Travel mistakes.
• Boom raise operation is slow.
• Arm operation is slow.
• Swing operation is slow.
Retrial B
• Check Harness
Actual Operation of Proportional Valve during Low Current:
• In case ATT flow rate is limited, it cannot be limited.
Retrial B
• Check Harness
Machine overall operation is slow.
Retrial B
• Check Harness
Actual Operation of Proportional Valve during High Current:
• The engine is stalled at Low idle speed.
• Engine Speed: Middle to Fast: Engine Stall or Large Lug Down
Retrial B
• Check Harness
Actual Operation of Proportional Valve during Low Current:
• Machine overall operation is slow.
Retrial B
• Check Harness
During digging, arm speed is slow. (As deceleration rate is low,
this state is not easy to find.)
Retrial B
• Check Harness
Actual Operation of Proportional Valve during High Current:
• Combined operation of boom raise and arm roll-in during lifting/precision: The boom raise operation is not smooth.
Actual Operation of Proportional Valve during Low Current:
• During digging, arm speed is slow. (As deceleration rate is low,
this state is not easy to find.)
Combined operation of boom raise and arm roll-in with the front
attachment over ground, the boom is not raised smoothly and the
arm roll-in full-speed is slow.
Actual Operation of Proportional Valve during High Current:
• Digging force (arm) becomes weak.
Retrial B
• Check Harness
Retrial B
• Check Harness
Retrial B
• Check Harness
Retrial B
• Check Harness
Actual Operation of Proportional Valve during Low Current:
• Combined operation of boom raise and arm roll-in with the front
attachment over ground, the boom is not raised smoothly and
the arm roll-in full-speed is slow.
Retrial B
• Check Harness
Symptoms in Machine Operation When Trouble Occurs.
In case ATT flow rate is limited, it cannot be limited.
T4-1-15
Remark
Dr. ZX / Fault Code
Fault
Code
11404-2
Trouble
Cause
Influenced Control
Abnormal Current Feedback of So- Current: Both of Higher • Power Digging Control
lenoid Valve Unit (SG) (Relief than 920 mA or Less • Auto-Power Lift Control
Pressure Control)
than 60 mA
• Travel Pressure Increasing Control
Abnormal Feedback High Current of Current:
Solenoid Valve Unit (SG) (Relief 920 mA
Pressure Control)
11404-4
Abnormal Feedback Low Current of Current: Less than 56 • Power Digging Control
Solenoid Valve Unit (SG) (Relief mA
• Auto-Power Lift Control
Pressure Control)
• Travel Pressure Increasing Control
11405-2
Current: Both of Higher
than 920 mA or Less
than 60 mA
Current: Higher than
920 mA
Abnormal Current Feedback of Solenoid Valve Unit (SI) (Travel Motor
Fast Speed Selection)
11405-3 Abnormal Feedback High Current of
Solenoid Valve Unit (SI) (Travel Motor Fast Speed Selection)
11405-4 Abnormal Feedback Low Current of
Solenoid Valve Unit (SI) (Travel Motor Fast Speed Selection)
11410-2 Abnormal Current Feedback of
(ZX160-3 Maximum Pump 1 Flow Rate Limit
class only) Control Solenoid Valve
11410-3 Abnormal Feedback High Current of
(ZX160-3 Maximum Pump 1 Flow Rate Limit
class only) Control Solenoid Valve
Higher
than • Power Digging Control
• Auto-Power Lift Control
• Travel Pressure Increasing Control
11404-3
Travel Motor Swash Angle Selection
Control
Travel Motor Swash Angle Selection
Control
Current: Less than 56 Travel Motor Swash Angle Selection
mA
Control
Current: Both of Higher
than 920 mA or Less
than 60 mA
Current: Higher than
920 mA
• Pump 1 Flow Rate Limit Control
• Pump 1 Flow Rate Control Valve
at Travel
• Pump 1 Flow Rate Limit Control
• Pump 1 Flow Rate Control Valve
at Travel
11410-4 Abnormal Feedback Low Current of Current: Less than 56 • Pump 1 Flow Rate Limit Control
(ZX160-3 Maximum Pump 1 Flow Rate Limit mA
• Pump 1 Flow Rate Control Valve
class only) Control Solenoid Valve
at Travel
T4-1-16
Dr. ZX / Fault Code
Remedy for
Dr. ZX
Retrial B
• Check Harness
Actual Operation of Proportional Valve during High Current:
• Pressure always increases.
Retrial B
• Check Harness
Actual Operation of Proportional Valve during Low Current:
• Pressure increasing is impossible.
Retrial B
• Check Harness
Travel motor is always slow.
Retrial B
• Check Harness
Operation of Proportional Valve during High Current:
• Travel motor is always slow.
Retrial B
• Check Harness
Operation of Proportional Valve during Low Current:
• Travel motor is always slow.
Retrial B
• Check Harness
In case ATT flow rate is limited, it cannot be limited.
Retrial B
• Check Harness
Actual Operation of Proportional Valve during High Current:
• Travel mistakes.
• Boom raise operation is slow.
• Arm operation is slow.
• Bucket operation is slow.
Retrial B
• Check Harness
Actual Operation of Proportional Valve during Low Current:
• In case ATT flow rate is limited, it cannot be limited.
Retrial B
• Check Harness
Symptoms in Machine Operation When Trouble Occurs.
Pressure increasing is impossible.
T4-1-17
Remark
Dr. ZX / Fault Code
CAN Data Reception Failure
Fault
Trouble
Code
11910-2 Actual Engine Speed
Received from ECM
Cause
Faulty Harness
• Speed Sensing Control
• Send to ICF
• Attachment Operation Speed Increase Control
• Attachment Operation Speed
Limit Control
• Attachment Pump Torque
Decrease Control
(ZX200-3 to ZX330-3 class)
• Pump 1 Flow Rate Limit Control
• Pump 2 Flow Rate Limit Control
• Attachment Flow Rate Control
• Attachment Valve Selection (Optional)
Theft Prevention Engine Speed,
Engine Torque
Fuel Flow Rate
11918-2
Work Mode
Received from Monitor Unit
Faulty Harness
11911-2
Security Signal
Received from Monitor Unit
Fuel Flow Rate
Received from ECM
Radiator Coolant Temperature
Received from ECM
Faulty Harness
11920-2
11914-2
Influenced Control
Faulty Harness
Faulty Harness
T4-1-18
Radiator Coolant Temperature
Auto-Warming Up Control
Dr. ZX / Fault Code
Remedy for
Dr. ZX
Machine operation speed is slow. (During speed sensing, torque Retrial B
is decreased.)
During e-service, the engine is stalled.
• Digging Mode: Lock
Retrial B
In case flow rate is decreased and speed decreases during
ATT, stop this control, or Digging is not changed into ATT mode.
• Work Mode Alarm is displayed on the monitor unit.
Symptoms in Machine Operation When Trouble Occurs.
Remark
• Check Harness
• Check Harness
T1V1-05-01-102
In case theft prevention is turned ON by Dr. ZX, engine speed is Retrial B
kept at Minimum speed and pump torque is kept Minimum.
When the monitor setting is displayed fuel consumption at mo- Retrial B
ment, engine display at moment is “----“.
Heater Control: Ineffective
Retrial B
T4-1-19
• Check Harness
• Check Harness
• Check Harness
Dr. ZX / Fault Code
Other Failures
Fault
Trouble
Code
11901-3 Hydraulic
Oil
Temperature
Sensor High Voltage
Cause
Influenced Control
Voltage: 4.52 V or higher
• Hydraulic Oil Temperature
Auto-Warming Up Control
• Arm Regenerative Control
• Digging Regenerative Control
Voltage: Less than 0.23 V
• Hydraulic Oil Temperature
Auto-Warming Up Control
• Arm Regenerative Control
• Digging Regenerative Control
11901-4
Hydraulic
Oil
Temperature
Sensor Low Voltage
11905-3
Abnormal Boom Bottom Pres- Voltage: 4.5 V or higher
sure Sensor High Voltage
(Optional)
• Overload Alarm
11905-4
Abnormal Boom Bottom Pres- Voltage: Less than 0.25 V
sure Sensor Low Voltage
(Optional)
• Overload Alarm
T4-1-20
Dr. ZX / Fault Code
Remedy for
Dr. ZX
Retrial B
• Check Harness
When temperature is low (hydraulic oil temperature is less
than 0 °C), the auto-warming up control is inoperable.
Retrial B
• Check Harness
When overload alarm is used.
• Overload alarm buzzer rings.
• The overload alarm is displayed on the monitor unit.
Retrial B
• Check Harness
• Replace Boom
Pressure Sensor
Bottom
• Check Harness
• Replace Boom
Pressure Sensor
Bottom
Symptoms in Machine Operation When Trouble Occurs.
When temperature is low (hydraulic oil temperature is less
than 0 °C), the auto-warming up control is inoperable.
Remark
T1V1-05-02-002
When overload alarm is used.
• Overload alarm buzzer rings.
• The overload alarm is displayed on the monitor unit.
T1V1-05-02-002
T4-1-21
Retrial B
Dr. ZX / Fault Code
ECM
Fault
Code
100-3
100-4
102-3
102-4
105-3
105-4
108-3
108-4
110-0
110-3
110-4
Trouble
Cause
Abnormal Engine Oil Pressure Sensor
(Abnormal Low Voltage)
Abnormal Engine Oil Pressure Sensor
(Abnormal High Voltage)
Abnormal Boost Pressure Sensor (Abnormal Low Voltage)
Abnormal Boost Pressure Sensor (Abnormal High Voltage)
Abnormal Boost Temperature Sensor
(Abnormal High Voltage)
Voltage at the engine oil pressure sensor is below 0.1
V.
Voltage at the engine oil pressure sensor is beyond
4.85 V.
Voltage at the boost pressure sensor is below 0.1 V
Abnormal Coolant Temperature Sensor
(Abnormal High Voltage)
Abnormal Coolant Temperature Sensor
(Abnormal Low Voltage)
Voltage at the coolant temperature sensor is beyond
4.85 V.
Voltage at the coolant temperature sensor is below
0.1 V
Voltage at the boost pressure sensor is beyond 4.9 V.
Voltage at the boost temperature sensor is beyond
4.95 V over 5 minutes after the engine starts or when
coolant temperature is beyond 50 °C (122 °F).
Abnormal Boost Temperature Sensor Voltage at the boost temperature sensor is below 0.1
(Abnormal Low Voltage)
V.
Abnormal Atmospheric Pressure Sensor Voltage at the atmospheric pressure sensor is below
(Abnormal Low Voltage)
0.5 V.
Abnormal Atmospheric Pressure Sensor Voltage at the atmospheric pressure sensor is beyond
(Abnormal High Voltage)
3.8 V.
Overheating
Coolant temperature is beyond 120 °C (248 °F) when
operating the engine.
157-0
Abnormal common rail pressure (First Common rail pressure is beyond 185 MPa.
stage)
157-0
Abnormal common rail pressure
(Second stage)
The first stage “Abnormal common rail presure” is approved and common rail pressure is beyond 190
MPa.
157-2
Abnormal common rail pressure
(Pump over-pressure)
157-3
Abnormal Common Rail Pressure Sensor
(Abnormal High Voltage)
Abnormal Common Rail Pressure Sensor
(Abnormal Low Voltage)
When DUTY to the suction control valve is 40 % or
more, or target pressure to the suction control valve is
3
90 mm /sec or less, actual rail pressure is 40 MPa
2
(410 kgf/cm , 5820 psi) higher than the target rail
pressure.
Voltage at the common rail pressure sensor is beyond
4.5 V.
Voltage at the common rail pressure sensor is below
0.7 V.
157-4
T4-1-22
Dr. ZX / Fault Code
Presumptive Symptoms in Real Machine
Assumptive Conditions at Backup
Operation
There is no influence when operating the ma- Nothing special
chine.
Fault Code
(Tech 2)
P0522
P0523
Dark smoke occurs.
Boost pressure cannot be corrected.
P0237
P0238
There is no influence when operating the ma- Nothing special
chine.
P1112
P1113
Dark smoke occurs at high altitude.
2
Atmospheric pressure 80 kPa (0.8 kgf/cm , 12
psi) (2000 m above the sea)
P0107
P0108
There is no influence when operating the ma- Nothing special (The history of overheating is
chine.
recorded.)
P1173
When starting: -20 °C (-4 °F) (Start the engine
although what state.)
When operating: 80 °C (176 °F) (Operate
normally.)
P0118
Normal temperature: When starting, dark smoke
may occur and engine combustion sound may be
become loud.
While warming up with fresh air in low temperature: Rough idle, engine stall or while smoke may
be occur.
Vibration of the engine may be large, Rough idle,
output power decrease may occur, faulty increasing of rotation speed, dark smoke may
occur, output power may be too large.
P0117
Prevention the junection system (pump) from
damage
(Protect the RP sensor by over-pressure)
P0088
Vibration of the engine may be large, Rough idle, Prevention the junection system from damage
output power decrease may occur, faulty in- (Pressure is too much as PR is clogged.)
creasing of rotation speed, dark smoke may
occur, output power may be too large.
P0088
Vibration of the engine may be large, Rough idle, Prevention the junection system (pmp) from
output power decrease may occur, faulty in- damage
creasing of rotation speed, dark smoke may (Protect the RP sensor by over-pressure)
occur, output power may be too large.
P0089
The engine may be stalled. The output power
decreases.
P0193
The supply pump can not be controlled.
P0192
T4-1-23
Dr. ZX / Fault Code
Fault
Code
172-3
Trouble
Cause
Voltage at the intake-air temperature sensor is beyond 4.95 V in 3 minutes after the engine starts.
Voltage at the intake-air temperature sensor is below
0.1 V.
Voltage at the fuel temperature sensor is beyond 4.85
V in 3 minutes after the engine starts.
Voltage at the fuel temperature sensor is below 0.1 V.
190-0
Abnormal Intake-Air Temperature Sensor
(Abnormal High Voltage)
Abnormal Intake-Air Temperature Sensor
(Abnormal Low Voltage)
Abnormal Fuel Temperature Sensor (Abnormal High Voltage)
Abnormal Fuel Temperature Sensor (Abnormal Low Voltage)
Overrunning
In case the engine speed is beyond 2500 min
628-2
633-7
Abnormal ROM
Pressure limiter open
ROM is broken.
The pressure limiter is open.
636-2
Abnormal Cam Angle Sensor (No Signal)
172-4
174-3
174-4
636-2
636-7
639-2
639-3
651-3
652-3
653-3
654-3
655-3
(ZX330-3
class only)
656-3
(ZX330-3
class only)
-1
Although the crank signal is present, the cam signal is
not present.
Abnormal Cam Angle Sensor (Abnormal The pulse of cam signal is not matched.
Signal)
Phase Mismatch of Cam Angle Sensor
The right cam pulse is not present at the gap in the
crank.
Abnormal CAN Bus Line
Abnormal CAN Time Out
Detect the bus line off.
In case the CAN data reception is not approved in
prescribedtime
Open circuit in injection nozzle ＃1 drive No input signal of injector 1 monitor.
system
Open circuit in injection nozzle ＃2 drive No input signal of injector 2 monitor.
system
Open circuit in injection nozzle ＃3 drive No input signal of injector 3 monitor.
system
Open circuit in injection nozzle #4 drive No input signal of injector 4 monitor.
system
Open circuit in injection nozzle #5 drive No input signal of injector 5 monitor.
system
Open circuit in injection nozzle #6 drive No input signal of injector 6 monitor.
system
T4-1-24
Dr. ZX / Fault Code
Presumptive Symptoms in Real Machine
Operation
Nothing special
Nothing special
Engine speed of the excavator may not increase
-1
2500 min or more.
The engine stops.
Output power decrease
Assumptive Conditions at Backup
When starting: -10 °C (14 °F) (Start the engine
although what state.)
When operating: 25 °C (77 °F) (Operate normally.)
When starting: -20 °C (-4 °F) (Start the engine
although what state.)
When operating: 70 °C (158 °F) (Operate normally.)
Mistake of gear change, etc.
Data of ROM cannot be read.
Rial pressure is beyond the allowable pressure.
• While the engine runs, there is nothing abnor- While the engine runs, operate according to
standard of the crank sensor. When the enmal with machine operation.
• After the engine is stalled, the re-start is im- gine stops, the start is impossible (in order to
prevent the engine from damaging).
possible.
• While the engine runs, there is nothing abnor- The timing chain and the belt does not turn
smoothly but turn in reverse.
mal with machine operation.
• After the engine is stalled, the re-start is impossible.
Speed is turnd into idle speed.
CAN communication is operable.
Fault Code
(Tech 2)
P0113
P0112
P0183
P0182
P0219
P0601
P1095
P0340
P0341
P1345
U2104
U2106
Vibration of the engine is large, Rough idle, out- #1 injector cannot be controlled.
put power decrease, faulty increasing of → Stop drive pulse output of #1 injector.
rotation speed, output power decrease
#2 injector cannot be controlled.
→ Stop drive pulse output of #2 injector.
#3 injector cannot be controlled.
→ Stop drive pulse output of #3 injector.
#4 injector cannot be controlled.
→ Stop drive pulse output of #4 injector.
#5 injector cannot be controlled.
→ Stop drive pulse output of #5 injector.
P0201
#6 injector cannot be controlled.
→ Stop drive pulse output of #6 injector.
P0206
T4-1-25
P0202
P0203
P0204
P0205
Dr. ZX/ Fault Code
Fault Code
Trouble
Cause
723-2
Although the cam signal is present, the crank signal is not
present.
The pulse of crank signal is not matched.
987-3
Abnormal Crank Speed Sensor (No
Signal)
Abnormal Crank Speed Sensor
(Abnormal Signal)
Abnormal check engine lamp
1077-2
Abnormal IC for CPU watching
No change of RUN-SUB pulse in 20 msec
1079-2
Abnormal 5 V Power Source 1 When battery volate is between 16 V and 32 V, voltage of
Voltage
IGKEY power source is 5.5 V or more or 4.5 V or less.
1080-2
Abnormal 5 V Power Source 2 When battery volate is between 16 V and 32 V, voltage of
Voltage
IGKEY power source is 5.5 V or more or 4.5 V or less.
1239-1
No pressure to pump (Fuel leakage)
When pressure to the suction control valve is 900 min ,
2
actual rail pressure is 15MPa (150 kgf/cm , 2180 psi) or less.
1240-1
No pressure to pump (Fuel leakage)
When DUTY to the suction control valve is 33 % or less, or
3
pressure to the suction control valve is 28000 mm /sec or
-1
more and 1200 min , actual rail pressure is 50 MPa (510
2
kgf/cm , 7270 psi) lower than the target rail pressure.
1347-0
Open circuit in suction control valve The suctioncontrol valve drive current is beyond 2400 mA or
drive system, Shorted circuit in + B or below 50 mA. Or, difference between the tartget current and
GND
actual current is 1000 mA or more.
1485-2
Abnormal main relay system
723-2
No monitor signal of the check engine lamp
-1
Voltage in the main relay system is 1 V or less with the main
relay coil output ON.
Although the main relay coil output is turned OFF, the main
relay is kept ON.
10001-3
Abnormal EGR Position (Brushless The condition which the output signal of EGR position cannot
spec.)
be present in.
10002-2
Abnormal EGR valve control
Difference between the target valve lift and actual position is
beyond 20%.
T4-1-26
Dr. ZX/ Fault Code
Presumptive Symptoms in Real Machine
Operation
Assumptive Conditions at Backup
• The output power may decrease, white smoke Operate according to standard of the cam sensor.
may occur and vibration may occur.
• The engine may be stalled. (If the cam senor is
normal, the engine can re-start.)
Fault Code
(Tech 2)
P0335
P0336
There is no influence when operating the Nothing special
machine.
P0650
Output power decrease
Sub CPU is broken.
P0606
Same as Abnormal accelerator Sensor
←
P1631
Same as Abnomal atmospheric and in-take ←
temperature sensors
P1632
Vibration of the engine may be large, Rough idle,
output power decrease may occur,
faulty
increasing of rotation speed, dark smoke may
occur, output power may be too large.
Vibration of the engine may be large, Rough idle,
output power decrease may occur,
faulty
increasing of rotation speed, dark smoke may
occur, output power may be too large.
The engine may be stalled and the rotation
speed increases automatically and abnormally
according to open or shorted circuit condition.
Dark smoke occurs. Output power is too large.
Fuel leakage is too much.
Actual rail pressure does not increase to the
required pressure.
P0087
Fuel leakage is too much.
Difference between target rail pressure and actual
rail pressure is larger than the specification.
(Large deflection)
The supply pump cannot be controlled.
→ Prevent the engine from increasing the rotation
speed automatically and abnormally (Protect the
engine).
P1093
The engine cannot start.
Nothing
Electrical power is kept supplying to the Nothing
machine.
There is influence to exhaust gas.
There is influence to exhaust gas.
As the sensor input is not certain, it cannot be
controlled. Exhaust gas becomes bad.
Operate the engine with EGR valve fully open.
EGR cannot be controlled.
As exhaust gas becomes bad, EGR stops.
T4-1-27
P0090
P1625
P0487
P0488
Dr. ZX/ Fault Code
Fault Code
10003-2
10004-2
Trouble
Cause
Abnormal Injection Nozzle Common ZX160-3 to ZX270-3 class
1 Drive System
No monitor siganals of injectors 1, 4
ZX330-3 class
No monitor siganals of injectors 1, 3, 5
Abnormal Injection Nozzle Common ZX160-3 to ZX270-3 class
2 Drive System
No monitor siganals of injectors 2, 3
ZX330-3 class
No monitor siganals of injectors 2, 4, 6
10005-1
Abnormal Charge Circuit
(Bank 1)
In case voltage at bank 1 of charge circuit in ECM is low
10006-1
Abnormal Charge Circuit
(Bank 2)
In case voltage at bank 2 of charge circuit in ECM is low
10007-2
Abnormal CPU
10008-2
10009-2
Abnormal A/D Conversion
A/D conversion cannot be done.
Abnormal 5 V Power Source 3 When battery voltage is between 16 V and 32 V, voltage of
Voltage
IGKEY power source is 5.5 V or more or 4.5 V or less.
10010-2
Abnormal 5 V Power Source 4 When battery voltage is between 16 V and 32 V, voltage of
Voltage
IGKEY power source is 5.5 V or more or 4.5 V or less.
10011-2
Abnormal 5 V Power Source 5 When battery voltage is between 16 V and 32 V, voltage of
Voltage
IGKEY power source is 5.5 V or more or 4.5 V or less.
10013-2
Abnormal EEPROM
Within 100 msec after the key switch is turned ON, failure of
main CPU is detected by sub CPU.
(Sub CPU resets CPU.)
EEPROM is broken.
T4-1-28
Dr. ZX/ Fault Code
Presumptive Symptoms in Real Machine
Operation
Assumptive Conditions at Backup
Vibration of the engine may be large, Rough idle,
output power decrease may occur, faulty
increasing of rotation speed may occur, the
engine may be stalled.
The injector cannot be controlled.
→ Stop output of drive signal at broken common
side
(Protect the engine from damage)
Fault Code
(Tech 1)
P1261
P1262
Vibration of the engine may be large, Rough idle,
output power decrease may occur, faulty
increasing of rotation speed may occur, the
engine may be stalled.
The injector cannot be controlled.
→ Stop output of drive signal at broken common
side
(Protect the engine from damage)
P0612
Output power decrease
CPU is broken.
P0606
P0611
The engine cannot start.
P0606
Output power decrease, dark smoke occur.
All analogue sensor cannot be used.
Same as Abnomal coolant temperature, fuel ←
temperature and hydraulic oil pressure sensors
P1630
P1633
Same as Abnomal boost pressure and boost ←
temperature sensors
P1634
Same as Abnomal rail pressure and EGR ←
position sensors
P1635
There is no influence when operating the Data cannot be written to EEPROM.
machine.
P0630
T4-1-29
Dr. ZX/ Fault Code
ICF
Fault Code
Trouble
Cause
14000-2
Abnormal CAN Communication
Data cannot be received due to the noise on the CAN bus
line.
14001-2
ICF: Flash Memory: Read / Write In case the internal memory is abnormal when the key is
Error
turned ON
14002-2
ICF: External RAM: Read / Write In case the internal memory is abnormal when the key is
Error
turned ON
14003-2
ICF: EEPROM: Sum Check Error
14006-2
ICF:
Satellite
Communication In case communication to the satellite terminal cannot be
Terminal: Communication Error
done over 30 seconds.
14008-2
ICF: Abnormal Internal RAM
In case the internal memory is abnormal when the key is
turned ON
In case the internal memory is abnormal when the key is
turned ON
T4-1-30
Dr. ZX/ Fault Code
Fault Code
Remedy
14000-2
Check for CAN communication bus line.
14001-2
After initializng the information C/U by using Dr. ZX, re-try in the troubleshooting.
If the error code is displayed after re-try, ICF may be broken.
Replace ICF.
NOTE: When initialising the information C/U, all stored data is deleted.
14002-2
After initializng the information C/U by using Dr. ZX, re-try in the troubleshooting.
If the error code is displayed after re-try, ICF may be broken.
Replace ICF.
NOTE: When initialising the information C/U, all stored data is deleted.
14003-2
As ICF may be broken, replace ICF.
14006-2
Check for the items below.
1. Check if the communication line is abnormal.
2. Check if the electrical power source of communication terminal is abnormal.
• Electrical power source
• Fuses
3. Check if the satellilte terminal is broken.
14008-2
Re-try in the troubleshooting by using Dr.ZX.
If the error code is displayed after re-try, ICF may be broken.
T4-1-31
Dr. ZX/ Fault Code
SATELLITE TERMINAL
Fault Code
Trouble
Cause
14100-2
Satellite Communication Terminal: Data cannot be received due to the noise on the CAN bus
Abnormal EEPROM
line.
14101-2
Satellite Communication Terminal: In case the internal memory is abnormal when the key is
Abnormal IB/OB Queue
turned ON
14102-2
Satellite Communication Terminal: In case the internal memory is abnormal when the key is
Abnormal Local Loop Back
turned ON
14103-2
Satellite Communication Terminal: In case the internal memory is abnormal when the key is
The satellite is not found.
turned ON
14104-2
Satellite Communication Terminal: In case communication to the satellite terminal cannot be
Fail 1 of Remote Loop Back
done over 30 seconds.
14105-2
Satellite Communication Terminal: In case the internal memory is abnormal when the key is
Fail 2 of Remote Loop Back
turned ON
14106-2
Satellite Communication Terminal: In case sending and receiving data are unmatched.
Sending and receiving data are
mistached.
T4-1-32
Dr. ZX/ Fault Code
Fault Code
Remedy
14100-2
Replace the controller.
14101-2
Replace the controller.
14102-2
• Check communication aerial of satellite terminal.
14103-2
• Check communication aerial of satellite terminal.
14104-2
Replace the controller.
14105-2
Replace the controller.
14106-2
Replace the controller.
T4-1-33
Dr. ZX/ Fault Code
MONITOR UNIT
Fault Code
Trouble
Cause
13303-2
Abnormal Thermister Temperature
Thermister temperature is 85 °C (185 °F) or higher.
13304-2
Abnormal REG Input H Level
During REG input H level
13306-2
Abnormal EEPROM
When failure reading EEPROM occurs
13308-2
Abnormal CAN Communication
Bus off occurs beyond five times.
13310-3
Shorted
circuit
Temperature Sensor
13311-3
Shorted circuit in Fuel Leverl Sensor The state, input 3±1 Ω or less, is kept over 60 seconds.
13311-4
Open circuit in Fuel Leverl Sensor
in
Coolant The state, input 105±30 Ω or less, is kept over 60 seconds.
The state, input 135±20 Ω or less, is kept over 60 seconds.
T4-1-34
Dr. ZX/ Fault Code
Fault Code
Remedy
13303-2
Cool the monitor unit and so on until temperature inside the monitor unit is less than 85 °C
(185 °F).
13304-2
(Refer to the Troubleshooting flow chart.)
13306-2
If this fault code is displayed after retarial, replace the monitor unit.
13308-2
Refer to “Check CAN Harness”.
13310-3
Check coolant temperature sensor and harness.
13311-3
Check fuel level sensor and harness.
13311-4
Check fuel level sensor and harness.
T4-1-35
Dr. ZX/ Fault Code
(Blank)
T4-1-36
Dr. ZX / Fault Code
FAULT CODE
ZX450-3 TO ZX850-3 CLASS
For details of trouble analyses, refer to “Technical
Manual (Troubleshooting)” for the corresponding
models.
T4-2-1
Dr. ZX / Fault Code
FAULT CODE LIST
MC
Fault
Code
11000-2
Trouble
Cause
Influenced Control
Abnormal EEPROM
Faulty MC
• All Control
11001-2
Abnormal RAM
Faulty MC
• All Control
11002-2
Abnormal A/D Converter
Faulty MC
• All Control
11003-3
Abnormal Sensor Voltage
Faulty MC
• All Control
11004-2
CAN Communication Error
Faulty MC
Shorted Circuit in CAN Bus
Line
11101-3
EC Dial sensor Circuit High
Input
EC Dial sensor Circuit Low Input
Voltage: 4.75 V or higher
• Engine Control
• Work Mode Control
• Attachment Mode Control
• Horsepower (Speed Sensing)
Control
• Fan Pump Flow Rate Control
• CAN Cycle Data
Communication
• Overheat Prevention Control
• Engine Control Dial Control
Voltage: Less than 0.25 V
• Engine Control Dial Control
• HP Mode Control
• Horsepower Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Auto-Power Lift Control
• HP Mode Control
• Horsepower Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Auto-Power Lift Control
11101-4
11200-3
Pump 1 Delivery Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
11200-4
Pump 1 Delivery Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
11202-3
Pump 2 Delivery Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
11202-4
Pump 2 Delivery Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
T4-2-2
• HP Mode Control
• Horsepower Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• HP Mode Control
• Horsepower Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Replace MC
Retry Diagnostic Procedure B
• Replace MC
Retry Diagnostic Procedure B
• Replace MC
• Engine speed is kept at backup
-1
speed (1200 min ).
Retry Diagnostic Procedure B
• Replace MC
• Check Harness (Sensor Power)
• Check Sensor to connected to MC
• No Speed sensing
• All abnormal signals via CAN
communication
• Engine speed is kept at slow idle
speed.
Retry Diagnostic Procedure B
• Replace MC
• Check CAN Harness
• Target engine speed is kept at
-1
1200 min .
• Target engine speed is kept at
-1
1200 min .
• Increasing speed at HP mode is
difficult.
• Less flow rate at 19.6 MPa
• Relief cut is not operated.
• Auto-power lift does not function.
• Increasing speed at HP mode is
difficult.
• Less flow rate at 19.6 MPa
• Relief cut is not operated.
• Auto-power lift does not function.
Retry Diagnostic Procedure B
• Check Harness
• Replace Engine Control Dial
• Check Harness
• Replace Engine Control Dial
• Check Harness
• Replace Pump 1 Delivery Pressure
Sensor
-
Retry Diagnostic Procedure B
Retry Diagnostic Procedure B
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 1 Delivery Pressure
Sensor
• Increasing speed at HP mode is
difficult.
• Less flow rate at 19.6 MPa
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 2 Delivery Pressure
Sensor
• Increasing speed at HP mode is
difficult.
• Less flow rate at 19.6 MPa
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 2 Delivery Pressure
Sensor
T4-2-3
Dr. ZX / Fault Code
Fault
Code
11301-3
Trouble
Cause
Influenced Control
Swing Pilot Pressure Sensor
Circuit High Input
Voltage: 4.75 V
or higher
• Engine Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Swing Horsepower Reducing
Control
• Boom Mode Selector Control
11301-4
Swing Pilot Pressure Sensor
Circuit Low Input
Voltage: Less than 0.25 V
• Engine Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Swing Horsepower Reducing
Control
• Boom Mode Selector Control
11302-3
Boom Raise Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Engine Control
• HP Mode Control
• Auto-Power Lift Control
• Boom Mode Selector Control
T4-2-4
Dr. ZX / Fault Code
Symptoms in Machine Operation
Remedy for Dr. ZX
When Trouble Occurs.
• Cut off override is not impossible. Retry Diagnostic Procedure B
• A/I cannot be released by swing
operation.
• Flow rate of lever regulated pump
control becomes maximum by
swing operation.
• Reducing operation of swing
torque is impossible.
• Boom mode selector control is
impossible by swing operation.
• Engine speed is lower than speed
at E mode.
Remedy
• Check Harness
• Replace Swing Pilot Pressure Sensor
• Cut off override is not impossible. Retry Diagnostic Procedure B
• A/I cannot be released by swing
operation.
• Flow rate of lever regulated pump
control becomes maximum by
swing operation.
• Reducing operation of swing
torque is impossible.
• Boom mode selector control is
impossible by swing operation.
• Engine speed is lower than speed
at E mode.
• Check Harness
• Replace Swing Pilot Pressure Sensor
Retry Diagnostic Procedure B
• Speed at HP mode does not
increase by boom raise operation.
• A/I cannot be released by boom
raise operation.
• Flow rate of lever regulated pump
control becomes maximum by
boom raise operation.
• Boom mode selector control is
impossible by boom raise
operation.
• Auto-power lift does not function
by boom raise operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
• Check Harness
• Replace Boom Raise Pilot Pressure
Sensor
T4-2-5
Dr. ZX / Fault Code
Fault
Code
11302-4
Trouble
Cause
Influenced Control
Boom Raise Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Engine Control
• HP Mode Control
• Auto-Power Lift Control
• Boom Mode Selector Control
11303-3
Arm Roll-in Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Engine Control
• HP Mode Control
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Auto-Power Lift Control
11303-4
Arm Roll-in Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Engine Control
• HP Mode Control
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Auto-Power Lift Control
T4-2-6
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• Speed at HP mode does not
increase by boom raise operation.
• A/I cannot be released by boom
raise operation.
• Flow rate of lever regulated pump
control becomes maximum by
boom raise operation.
• Boom mode selector control is
impossible by boom raise
operation.
• Auto-power lift does not function
by boom raise operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Replace Boom Raise Pilot Pressure
Sensor
• Speed at HP mode does not
increase by arm roll-in operation.
• A/I cannot be released by arm
roll-in operation.
• Flow rate of lever regulated pump
control becomes maximum by
arm roll-in operation.
• Boom mode selector control is
impossible by arm roll-in
operation.
• Auto-power lift does not function
by arm roll-in operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Arm Roll-In Pilot Pressure
Sensor
• Speed at HP mode does not
increase by arm roll-in operation.
• A/I cannot be released by arm
roll-in operation.
• Flow rate of lever regulated pump
control becomes maximum by
arm roll-in operation.
• Boom mode selector control is
impossible by arm roll-in
operation.
• Auto-power lift does not function
by arm roll-in operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Arm Roll-In Pilot Pressure
Sensor
T4-2-7
Dr. ZX / Fault Code
Fault
Code
11400-3
Trouble
Cause
Influenced Control
Pump 2 Regulator Valve FB
High Current
Pump 2 Regulator Valve FB
Low Current
Boom Flow Control Valve FB
High Current
Boom Flow Control Valve FB
Low Current
Power Boost P/S Valve FB High
Current
Current: Higher than 920 mA
• All Pump Controls
Current: Less than 56 mA
• All Pump Controls
Current: Higher than 920 mA
• All Pump Controls
Current: Less than 56 mA
• All Pump Controls
Current: Higher than 920 mA
• Counterweight Removal and
Installation Control
• Pressure Increase Selection
Control When Traveling
• Power Digging Control
• Auto-Power Lift Control
11404-4
Power Boost P/S Valve FB Low
Current
Current: Less than 56 mA
• Counterweight Removal and
Installation Control
• Pressure Increase Selection
Control When Traveling
• Power Digging Control
• Auto-Power Lift Control
11405-3
Travel Swash Angle P/S Valve
FB High Current
Travel Swash Angle P/S Valve
FB Low Current
Pump 1 Regulator Valve FB
High Current
Pump 1 Regulator Valve FB
Low Current
Hyd. Fan P/S Valve FB High
Current
Hyd. Fan P/S Valve FB Low
Current
Boom Bottom Pressure Sensor
Circuit High Input
Current: Higher than 920 mA
Current: Higher than 920 mA
• Travel Motor Swash Angle
Selection Control
• Travel Motor Swash Angle
Selection Control
• All Pump Controls
Current: Less than 56 mA
• All Pump Controls
Current: Higher than 920 mA
• Fan Pump Flow Rate Control
Current: Less than 56 mA
• Fan Pump Flow Rate Control
Voltage: 4.5 V or higher
• Overload Alarm Control
11802-4
Boom Bottom Pressure Sensor
Circuit Low Input
Voltage: Less than 0.25 V
• Overload Alarm Control
11901-3
Hyd. Oil Temp Sensor Circuit
High Input
Intake air temperature: 21 °C
or higher (higher than 20 °C)
Voltage: 4.10 V or higher
This condition is continued
beyond 30 seconds.
• Engine Control
• Overheat Prevention Control
• Fan Pump Flow Rate Control
11901-4
Hyd. Oil Temp Sensor Circuit
Low Input
Voltage: Less than 0.23 V
This condition is continued
beyond 30 seconds.
• Engine Control
• Overheat Prevention Control
• Fan Pump Flow Rate Control
11400-4
11402-3
11402-4
11404-3
11405-4
11410-3
11410-4
11412-3
11412-4
11802-3
Current: Less than 56 mA
T4-2-8
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• Pump 2 control is impossible.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Pump 2 control is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Boom flow rate control valve
control is not operated.
• Boom flow rate control valve
control is not operated.
• Increasing pressure selection is
impossible.
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
• Increasing pressure selection is
impossible.
Retry Diagnostic Procedure B
• Check Harness
• Travel mode selection is
impossible.
• Travel mode selection is
impossible.
• Pump 1 control is impossible.
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
• Pump 1 control is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Fan control is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Fan control is impossible.
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
• Replace Boom Bottom Pressure
Sensor
Retry Diagnostic Procedure B
• Check Harness
• Replace Boom Bottom Pressure
Sensor
• Overheat prevention control of
hydraulic oil is impossible.
• Maximum fan speed
• Drive torque of pump is reduced.
Retry Diagnostic Procedure B
• Check Harness
• Replace Hydraulic Oil Temperature
Sensor
• Overheat prevention control of
hydraulic oil is impossible.
• Maximum fan speed
• Drive torque of pump is reduced.
Retry Diagnostic Procedure B
• Check Harness
• Replace Hydraulic Oil Temperature
Sensor
-
-
T4-2-9
Dr. ZX / Fault Code
Fault
Code
11910-2
11911-2
Trouble
Cause
Actual Engine Speed Receive
Error
Security Signal receive Error
Faulty Harness
Influenced Control
-
Faulty Harness
-
11914-2
11918-2
Radiator Water Temp Receive
Error
Work Mode Receive Error
Faulty Harness
11920-2
Fuel Flaw Receive Error
Faulty Harness
11976-3
Auxiliary Valve 2 FB High
Current
Auxiliary Valve 2 FB Low
Current
Auxiliary Valve 1 FB High
Current
Auxiliary Valve 1 FB Low
Current
ATT Relief Change Valve FB
High Current
ATT Relief Change Valve FB
Low Current
Fan Reverse Valve 2 FB High
Current
Fan Reverse Valve 2 FB Low
Current
Fan Reverse Valve 1 FB High
Current
Fan Reverse Valve 1 FB Low
Current
Intake Air Temperature Receive
Error
Boost Temperature Receive
Error
Boom Mode Control Valve FB
High Current
Boom Mode Control Valve FB
Low Current
Current: Higher than 920 mA
11976-4
11977-3
11977-4
11980-3
11980-4
11981-3
11981-4
11982-3
11982-4
11983-2
11984-2
11989-3
11989-4
Faulty Harness
Current: Less than 56 mA
Current: Higher than 920 mA
Current: Less than 56 mA
Current: Higher than 920 mA
Current: Less than 56 mA
Current: Higher than 920 mA
Current: Less than 56 mA
Current: Higher than 920 mA
Current: Less than 56 mA
• Overheat Prevention Control
• Fan Pump Flow Rate Control
• Work Mode Control
• Attachment Mode Control
-
Faulty Harness
• Fan Pump Flow Rate Control
Faulty Harness
• Fan Pump Flow Rate Control
Current: Higher than 920 mA
• Boom Mode Selector Control
Current: Less than 56 mA
• Boom Mode Selector Control
T4-2-10
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• Stop speed sensing.
• Pump learning is impossible.
• When engine control security and
pump control security are turned
ON, security is activated.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
• Attachment relief selection is
impossible.
• Attachment relief selection is
impossible.
• Fan reverse is impossible.
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
• Fan reverse is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Fan reverse is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Fan reverse is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Maximum fan speed (with blower
motor relay ON)
• Maximum fan speed
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
• Maximum fan speed
• Drive torque of pump is reduced.
• The value received last time is
effective.
• The value received last time is
effective.
-
• Boom mode selector control is
impossible.
• Boom mode selector control is
impossible.
T4-2-11
Dr. ZX / Fault Code
Fault
Code
Trouble
Cause
Influenced Control
Right Travel Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Travel Speed Increase
Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Swing Horsepower Reducing
Control
• Pressure Increase Selection
Control When Traveling
• Rear Monitoring Display
Selection Control
• Travel Alarm Control
• Engine Control
Right Travel Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Travel Speed Increase
Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Swing Horsepower Reducing
Control
• Pressure Increase Selection
Control When Traveling
• Rear Monitoring Display
Selection Control
• Travel Alarm Control
• Engine Control
11991-3
11991-4
T4-2-12
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• Increasing travel speed is
impossible by right travel
operation.
• A/I cannot be released by right
travel operation.
• Cut off override is impossible by
right travel operation.
• Boom mode selector control is
impossible by right travel
operation.
• Pressure increase when traveling
is impossible by right travel
operation.
• Rear monitoring display selection
is impossible by right travel
operation.
• Travel alarm outputs.
• Engine speed is lower than speed
at E mode.
• Increasing travel speed is
impossible by right travel
operation.
• A/I cannot be released by right
travel operation.
• Cut off override is impossible by
right travel operation.
• Boom mode selector control is
impossible by right travel
operation.
• Pressure increase when traveling
is impossible by right travel
operation.
• Rear monitoring display selection
is impossible by right travel
operation.
• Travel alarm outputs.
• Engine speed is lower than speed
at E mode.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Replace Right Travel Pilot Pressure
Sensor
Retry Diagnostic Procedure B
• Check Harness
• Replace Right Travel Pilot Pressure
Sensor
T4-2-13
Dr. ZX / Fault Code
Fault
Code
11992-3
11992-4
Trouble
Cause
Influenced Control
Pump 2 Regulator Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Pump 2 Flow Rate Control
• Pump 2 Regulator Pressure
Learning
Pump 2 Regulator Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Pump 2 Flow Rate Control
• Pump 2 Regulator Pressure
Learning
Left Travel Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Travel Speed Increase
Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Swing Horsepower Reducing
Control
• Pressure Increase Selection
Control When Traveling
• Rear Monitoring Display
Selection Control
• Travel Alarm Control
• Engine Control
Left Travel Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Travel Speed Increase
Control
• Relief Flow Rate Reducing
Control (Relief Cut Off)
• Swing Horsepower Reducing
Control
• Pressure Increase Selection
Control When Traveling
• Rear Monitoring Display
Selection Control
• Travel Alarm Control
• Engine Control
11993-3
11993-4
T4-2-14
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• No secondary pressure feedback
of pump 2 proportional solenoid
valve (bad response)
• Pump learning is impossible.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 2 Regulator Pressure
Sensor
• No secondary pressure feedback
of pump 2 proportional solenoid
valve (bad response)
• Pump learning is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 2 Regulator Pressure
Sensor
• Increasing travel speed is
impossible by left travel
operation.
• A/I cannot be released by left
travel operation.
• Cut off override is impossible by
left travel operation.
• Boom mode selector control is
impossible by left travel
operation.
• Pressure increase when traveling
is impossible by left travel
operation.
• Rear monitoring display selection
is impossible by left travel
operation.
• Travel alarm outputs.
• Engine speed is lower than speed
at E mode.
• Increasing travel speed is
impossible by left travel
operation.
• A/I cannot be released by left
travel operation.
• Cut off override is impossible by
left travel operation.
• Boom mode selector control is
impossible by left travel
operation.
• Pressure increase when traveling
is impossible by left travel
operation.
• Rear monitoring display selection
is impossible by left travel
operation.
• Travel alarm outputs.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
Retry Diagnostic Procedure B
• Check Harness
T4-2-15
Dr. ZX / Fault Code
Fault
Code
11994-3
11994-4
Trouble
Cause
Influenced Control
Pump 1 Regulator Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Pump 1 Flow Rate Control
• Pump 1 Regulator Pressure
Learning
Pump 1 Regulator Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Pump 1 Flow Rate Control
• Pump 1 Regulator Pressure
Learning
Arm Roll-Out Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
Arm Roll-Out Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
11995-3
11995-4
T4-2-16
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• No secondary pressure feedback
of pump 1 proportional solenoid
valve (bad response)
• Pump learning is impossible.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 1 Regulator Pressure
Sensor
• No secondary pressure feedback
of pump 1 proportional solenoid
valve (bad response)
• Pump learning is impossible.
Retry Diagnostic Procedure B
• Check Harness
• Replace Pump 1 Regulator Pressure
Sensor
• A/I cannot be released by arm
roll-out operation.
• Flow rate of lever regulated pump
control becomes maximum by
arm roll-out operation.
• Boom mode selector control is
impossible by arm roll-out
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Arm Roll-Out Pilot Pressure
Sensor
• A/I cannot be released by arm
roll-out operation.
• Flow rate of lever regulated pump
control becomes maximum by
arm roll-out operation.
• Boom mode selector control is
impossible by arm roll-out
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Arm Roll-Out Pilot Pressure
Sensor
T4-2-17
Dr. ZX / Fault Code
Fault
Code
11997-3
Trouble
Cause
Influenced Control
Bucket Roll-Out Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
11997-4
Bucket Roll-Out Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
11998-3
Boom Lowering Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
11998-4
Boom Lowering Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
T4-2-18
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• A/I cannot be released by bucket
roll-out operation.
• Flow rate of lever regulated pump
control becomes maximum by
bucket roll-out operation.
• Boom mode selector control is
impossible by bucket roll-out
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Replace Bucket Roll-Out Pilot
Pressure Sensor
• A/I cannot be released by bucket
roll-out operation.
• Flow rate of lever regulated pump
control becomes maximum by
bucket roll-out operation.
• Boom mode selector control is
impossible by bucket roll-out
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Bucket Roll-Out Pilot
Pressure Sensor
• Speed at HP mode does not
increase by boom lower
operation.
• A/I cannot be released by boom
lower operation.
• Boom mode selector control is
impossible by boom lower
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
• Speed at HP mode does not
increase by boom lower
operation.
• A/I cannot be released by boom
lower operation.
• Boom mode selector control is
impossible by boom lower
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Boom Lower Pilot Pressure
Sensor
Retry Diagnostic Procedure B
• Check Harness
• Replace Boom Lower Pilot Pressure
Sensor
T4-2-19
Dr. ZX / Fault Code
Fault Code
Trouble
Cause
Influenced Control
11999-3
Bucket Roll-In Pilot Pressure
Sensor Circuit High Input
Voltage: 4.75 V or higher
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
11999-4
Bucket Roll-In Pilot Pressure
Sensor Circuit Low Input
Voltage: Less than 0.25 V
• Boom Mode Selector Control
• Boom Flow Rate Control
Valve Control
• Engine Control
20062-0
(ZX850-3
class Only)
Hydraulic Oil Overheat Alarm
Hydraulic Oil Temperature: 100
°C or higher
• Overheat Prevention Control
• Engine Control
T4-2-20
Dr. ZX / Fault Code
Symptoms in Machine Operation
When Trouble Occurs.
• A/I cannot be released by bucket
roll-in operation.
• Flow rate of lever regulated pump
control becomes maximum by
bucket roll-in operation.
• Boom mode selector control is
impossible by bucket roll-in
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Remedy for Dr. ZX
Remedy
Retry Diagnostic Procedure B
• Check Harness
• Replace Bucket Roll-In Pilot Pressure
Sensor
• A/I cannot be released by bucket
roll-in operation.
• Flow rate of lever regulated pump
control becomes maximum by
bucket roll-in operation.
• Boom mode selector control is
impossible by bucket roll-in
operation.
• Boom flow rate control valve
control is not operated.
• Engine speed is lower than speed
at E mode.
Retry Diagnostic Procedure B
• Check Harness
• Replace Bucket Roll-In Pilot Pressure
Sensor
• Alarm is displayed on the monitor
unit
• Pump driving torque decrease.
• Max. pump flow rate decrease.
Retry Diagnostic Procedure B
• Check Harness
• Check Oil Cooler
T4-2-21
Dr. ZX / Fault Code
ECM
Fault
Code
Trouble
Cause
91-2
Accelerator Sensor 1-2 Comparison Fault
• Difference in opening angle between accelerator
sensors 1-2 is 45 % or more.
100-3
Engine Oil Pressure Sensor Fault (Low Voltage: Less than 0.1 V
Voltage Fault)
Engine Oil Pressure Sensor Fault (High Voltage: More than 4.85 V
Voltage Fault)
Boost Pressure Sensor Fault (Low Volt- Voltage: Less than 0.1 V
age Fault)
100-4
102-3
102-4
Boost Pressure Sensor Fault (High Voltage Fault)
105-3
Boost Temperature Sensor Fault (High Voltage: More than 4.94 V
Voltage Fault)
Boost Temperature Sensor Fault (Low Voltage: Less than 0.1 V
Voltage Fault)
Barometric Pressure Sensor Fault (Low Voltage: Less than 0.5 V
Voltage Fault)
105-4
108-3
108-4
Voltage: More than 4.9 V
Barometric Pressure Sensor Fault (High Voltage: More than 3.8 V
Voltage Fault)
T4-2-22
Dr. ZX / Fault Code
Presumptive Symptoms in
Real Machine Operation
Assumptive
Conditions at Back-up
Fault Code
(Tech 2)
• 1 system fault: No back-up
• 2 system fault: Accelerator opening angle is controlled to 0 %.
• 1 system fault: No back-up
• 2 system fault: Accelerator opening angle is controlled
to 0 %.
P1271
• Operationality is not affected.
• No back-up
P0522
• Operationality is not affected.
• No back-up
P0523
• Operationality is affected
• Boost pressure default setting (200 kPa)
• Boost pressure correction/ EGR stopped
P0237
• Black smoke emission
• Boost pressure default setting (200 kPa)
• Boost pressure correction/ EGR stopped
P0238
• Operationality is affected.
• No back-up
P1113
• Operationality is affected.
• No back-up
P1112
• Black smoke emitted at high altitude
• Output shortage at low altitude
• Barometric pressure default setting 80 kPa (equivalent
to altitude 2500 m)
P0107
• Black smoke emitted at high altitude
• Output shortage at low altitude
• Barometric pressure default setting 80 kPa (equivalent
to altitude 2500 m)
P0108
T4-2-23
Dr. ZX / Fault Code
Fault
Code
Trouble
Cause
110-3
Engine Coolant Temperature
Fault (High Voltage Fault)
Sensor
Voltage: More than 4.85 V
110-4
Engine Coolant Temperature
Fault (Low Voltage Fault)
Sensor
Voltage: Less than 0.1 V
157-0
Common
Stage)
157-0
Common Rail Pressure Fault (Second
Stage)
Common rail pressure fault (first stage) + rail pressure:
More than 155 MPa or higher
157-2
Common Rail Pressure Fault (Excessive
Pressure Feed in Pump)
Actual rail pressure higher than target rail pressure for
10 MPa or more holds 8 seconds or more. Or actual
rail pressure higher than target rail pressure for 10
MPa or more holds 8 seconds or more, during indication of no pressure feed.
157-3
Common Rail Pressure Sensor Fault
(High Voltage Fault)
Voltage: More than 4.5 V
157-3
Common Rail Pressure Sensor Fault
(Low Voltage Fault)
Voltage: Less than 0.7 V.
Rail
Pressure
Fault
(First
Rail pressure: More than 150 MPa
T4-2-24
Dr. ZX / Fault Code
Presumptive Symptoms in
Real Machine Operation
Assumptive
Conditions at Back-up
Fault Code
(Tech 2)
• At normal temperature: Black • Coolant temperature default setting. (at starting: -20 °C,
at running: 80 °C)
smoke emission at starting,
greater engine combustion noise
are possible.
• During idling at atmospheric
temperature: Rough idling, engine stall, white smoke emission
P0118
• Start ability deteriorates at low
temperature
• Black smoke emission is possible
• Output lowering depending on
conditions
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• Excessive output
• Coolant temperature default setting. (at starting: -20 °C,
at running: 80 °C)
P0117
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure: Upper limit (80 MPa)
P0088
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• Excessive output
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure: Upper limit (80 MPa)
P0088
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• Excessive output
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure: Upper limit (80 MPa)
P0089
• Output lowering
• Black smoke emission
• Engine stall is possible.
• Actual rail pressure default setting (80 MPa)
• Rail pressure feedback control stopped
• Limited injection amount 2 (Multi-injection stopped)
P0193
• Engine blow up
• Actual rail pressure default setting (80 MPa)
• Rail pressure feedback control stopped
• Limited injection amount 2 (Multi-injection stopped)
P0192
T4-2-25
Dr. ZX / Fault Code
Fault
Code
Trouble
Cause
172-3
Intake Air Temperature Sensor Fault Voltage: More than 4.95 V
(High Voltage Fault)
172-4
Intake Air Temperature Sensor Fault (Low Voltage: Less than 0.1 V.
Voltage Fault)
174-3
Fuel Temperature Sensor Fault (High
Voltage Fault)
174-4
Fuel Temperature Sensor Fault (Low Voltage: Less than 0.1 V.
Voltage Fault)
190-0
Overrun
Engine Speed: More than 1970 min
628-2
ROM Fault
633-7
Pressure Limiter Open
ROM is faulty.
Re-flash failure
Pressure limiter is opened.
636-2
Cam Angle Sensor Fault (No Signal)
The crank signal exists but no cam angle sensor signal.
636-2
Cam Angle Sensor Fault (Signal Fault)
Number of pulse for cam angle sensor signal is mismatched.
636-7
Cam Angle Sensor out of Phase
Correct cam angle sensor pulse does not exist in crank
gap position.
Voltage: More than 4.85 V
-1
T4-2-26
Dr. ZX / Fault Code
Presumptive Symptoms in
Real Machine Operation
Assumptive Conditions at Back-up
Fault Code
(Tech 2)
• White smoke emission is possible
when starting at low temperature.
• Intake air temperature default setting (at starting: -10
°C, at running: 25 °C)
P0113
• White smoke emission is possible
when starting at low temperature.
• Intake air temperature default setting (at starting: -10
°C, at running: 25 °C)
P0112
• Not in particular
• Fuel temperature default setting (at starting: -20 °C, at
running: 70 °C)
P0183
• Operationality is affected.
• Fuel temperature default setting (at starting: -20 °C, at
running: 70 °C)
P0182
• Output lowering
• Limited injection amount 1 (Limitation is lifted if the
speed decreases.)
P0219
• Engine stopped
• Engine stopped
P0601
• Output lowering
• Limited injection amount 1
• Hunting
• Symptom does not change during • Engine running based on crank when crank is normal
• After engine stops: Unable to identify cylinder (unable
engine running.
to restart)
• After engine stalls, engine will not
start.
P1095
• Symptom does not change during • Engine running based on crank when crank is normal
• After engine stops: Unable to identify cylinder (unable
engine running.
to restart)
• After engine stalls, engine will not
start.
P0341
• Symptom does not change during • Engine running based on crank when crank is normal
• After engine stops: Unable to identify cylinder (unable
engine running.
to restart)
• After engine stalls, engine will not
start.
P1345
T4-2-27
P0340
Dr. ZX / Fault Code
Fault
Code
Trouble
Cause
639-2
CAN Bus Fault
Bus-off is detected.
639-3
CAN Timeout Fault
CAN data reception does not complete at a set time.
651-3
Open Circuit in Injection Nozzle #1 Drive No injector 1 monitor input signal exists.
System
652-3
Open Circuit in Injection Nozzle #2 Drive No injector 2 monitor input signal exists.
System
653-3
Open Circuit in Injection Nozzle #3 Drive No injector 3 monitor input signal exists.
System
654-3
Open Circuit in Injection Nozzle #4 Drive No injector 4 monitor input signal exists.
System
655-3
Open Circuit in Injection Nozzle #5 Drive No injector 5 monitor input signal exists.
System
656-3
Open Circuit in Injection Nozzle #6 Drive No injector 6 monitor input signal exists.
System
723-2
Crank Revolution Sensor Fault (No Signal)
Cam angle sensor signal exists but no crank signal.
723-2
Crank Revolution Sensor Fault (Signal
Fault)
Number of pulse for crank signal is mismatched.
987-3
Check Engine Lamp Fault
No check engine lamp monitor signal exists.
T4-2-28
Dr. ZX / Fault Code
Presumptive Symptoms in
Real Machine Operation
Assumptive Conditions at Back-up
Fault Code
(Tech 2)
Vary depending on setting
Switched to drive control by accelerator sensor input voltage
U2104
Vary depending on setting
Switched to drive control by accelerator sensor input voltage
U2106
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Injection for cylinder #5
P0201
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Injection for cylinder #3
P0202
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Injection for cylinder #6
P0203
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Injection for cylinder #2
P0204
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Injection for cylinder #4
P0205
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Common 1 stop (#1, #2, #3 cylinders stopped)
P0206
• Output lowering
• White smoke emission
• Intense engine vibration is possible.
• Engine stall is possible (restart is
possible when G sensor is normal.)
• Control based on cam angle sensor when cam angle
sensor is normal
P0335
• Output lowering
• White smoke emission
• Intense engine vibration is possible.
• Engine stall is possible (restart is
possible when G sensor is normal.)
• Control based on cam angle sensor when cam angle
sensor is normal
P0336
• Operationality is not affected.
• No back-up
P0650
T4-2-29
Dr. ZX / Fault Code
Fault
Code
Trouble
Cause
1077-2
CPU Fault
Sub-CPU detects main CPU fault in 100 msec after
key switch ON. (Sub-CPU resets CPU.)
1079-2
Voltage Fault in 5 V Power Supply 1
1080-2
Voltage Fault in 5 V Power Supply 2
5 V 1 power supply voltage: 5.5 V or more, 4.5 V or
less
5 V 2 power supply voltage: 5.5 V or more, 4.5 V or
less
1239-1
No Pump Pressure Feed (First Stage)
Actual rail pressure lower than target rail pressure for
10 MPa or more holds 8 seconds or more. Or pressure
feed indication is limit +1 °C or less, and actual rail
pressure lower than target rail pressure for 10 MPa or
more holds 8 seconds or more.
1240-1
No Pump Pressure Feed (Second Stage)
Actual rail pressure lower than target rail pressure for
10 MPa or more holds 8 seconds or more, when
judgment of “No pump pressure feed (first stage)” is
completed. Or pressure feed indication is limit +1 °C or
less, and actual rail pressure lower than target rail
pressure for 10 MPa or more holds 8 seconds or more.
1347-0
PCV1 Open Circuit or Ground Short
PCV1 monitor signal is fixed to Low side.
1347-4
PCV1+B Short Circuit
PCV1 monitor signal is fixed to High side.
1348-0
PCV2 Open Circuit or Ground Short
PCV2 monitor signal is fixed to Low side.
1348-4
PCV2+B Short Circuit
PCV2 monitor signal is fixed to High side.
1485-2
Main Relay System Fault
10001-3
10002-2
Main relay voltage is 1 V or less. In spite of relay OFF
command, relay is connected.
EGR Position Sensor Fault (Brushless EGR position output signal is abnormal.
Specification)
EGR Valve Control Fault
Difference between target valve lift and actual position
is more than 20 %.
T4-2-30
Dr. ZX / Fault Code
Presumptive Symptoms in
Real Machine Operation
Assumptive Conditions at Back-up
Fault Code
(Tech 2)
Output lowering
• Limited injection amount 2 (Multi-injection stopped)
• Sub-CPU stops control.
P0606
Accelerator opening angle is controlled to 0 %.
• Black smoke emitted at high altitude
• Output lowest at low altitude
Same to accelerator sensor fault
P1631
• Same to barometric pressure and intake air temperature sensor fault
P1632
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure upper limit (80 MPa)
P1094
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• Engine stall
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure upper limit (80 MPa)
P1093
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure upper limit (80 MPa)
P0091
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• PCV1 stop
P0092
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure upper limit (80 MPa)
P1291
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Black smoke emission
• PCV2 stop
P1292
Engine does not start.
No back-up
P1625
• Operationality is not affected.
• Instruction to fully close EGR valve
P0487
• Operationality is not affected.
• Instruction to fully close EGR valve
P0488
T4-2-31
Dr. ZX / Fault Code
Fault
Code
Trouble
Cause
10003-2
Injection Nozzle Common 1 Drive System No injector 1, 2, 3 monitor input signal exists.
Fault
10004-2
Injection Nozzle Common 2 Drive System No injector 4, 5, 6 monitor input signal exists.
Fault
10005-1
Charge Circuit Fault (Bank 1)
When charge circuit bank 1 voltage inside ECM is
low.
10006-1
Charge Circuit Fault (Bank 2)
When charge circuit bank 2 voltage inside ECM is
low.
10007-2
CPU Monitoring IC Fault
10008-2
A/D Conversion Fault
RUN-SUB pulse does not change for 20 msec or
more.
A/D conversion failure
10009-2
Voltage Fault in 5 V Power Supply 3
5 V 3 power supply voltage: 5.5 V or more, 4.5 V or
less
10010-2
Voltage Fault in 5 V Power Supply 4
10011-2
Voltage Fault in 5 V Power Supply 5
5 V 4 power supply voltage: 5.5 V or more, 4.5 V or
less
5 V 5 power supply voltage: 5.5 V or more, 4.5 V or
less
10013-2
EEPROM Fault
EEPROM is faulty.
T4-2-32
Dr. ZX / Fault Code
Presumptive Symptoms in
Real Machine Operation
Assumptive Conditions at Back-up
Fault Code
(Tech 2)
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Engine stall is possible.
• Common 1 stop (#1, #2, #3 cylinders stopped)
P1261
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Engine stall is possible.
• Common 2 stop (#4, #5, #6 cylinders stopped)
P1262
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Engine stall is possible.
• Common 1 stop (#1, #2, #3 cylinders stopped)
P0611
• Intense engine vibration
• Rough idling
• Output lowering
• Blow up fault
• Engine stall is possible.
• Common 2 stop (#4, #5, #6 cylinders stopped)
P0612
• Output lowering
• Limited injection amount 1
P0606
• Output lowering
• Black smoke emission
• Analog sensor system default processing
• Limited injection amount 3 (Multi-injection stopped)
• Target rail pressure upper limit (80 MPa)
P1630
• Deterioration of start ability
• Black smoke emission is possible.
• Operationality is affected.
• Same to oil pressure, coolant temperature, and combustion temperature sensor fault
P1633
• Operationality is affected.
• Same to boost pressure sensor fault
P1634
• Engine blow up
• Output lowering
• Black smoke emission
• Engine stall is possible.
• Same to rail pressure sensor fault and EGR position
sensor fault
P1635
• Operationality is not affected.
• No back-up
P0603
T4-2-33
Dr. ZX / Fault Code
ICF
Fault Code
Trouble
Cause
Remedy
14000-2
Abnormal CAN Data cannot be received due to the Check for CAN communication bus line.
Communicanoise on the CAN bus line.
tion
14001-2
Flash Memory: In case the internal memory is ab- After initializing the information C/U by using
Read / Write normal when the key is turned ON
Dr. ZX, retry in the troubleshooting.
Error
If the error code is displayed after retry, ICF
may be broken.
Replace ICF.
NOTE: When initializing the information
C/U, all stored data is deleted.
14002-2
External RAM: In case the internal memory is ab- After initializing the information C/U by using
Read / Write normal when the key is turned ON
Dr. ZX, retry in the troubleshooting.
Error
If the error code is displayed after retry, ICF
may be broken.
Replace ICF.
NOTE: When initializing the information
C/U, all stored data is deleted.
14003-2
EEPROM:
In case the internal memory is ab- Retry in the troubleshooting by using Dr.ZX.
Sum
Check normal when the key is turned ON
If the error code is displayed after retry, ICF
Error
may be broken.
Replace ICF.
14006-2
In case communication to the satel- Check for the items below.
Satellite
lite terminal cannot be done over 30 1. Check if the communication line is abCommunicanormal.
tion Terminal: seconds.
2. Check if the electrical power source of
Communicacommunication terminal is abnormal.
tion Error
• Electrical power source
• Fuses
3. Check if the satellite terminal is broken.
14008-2
Abnormal In- In case the internal memory is ab- Retry in the troubleshooting by using Dr.ZX.
ternal RAM
normal when the key is turned ON
If the error code is displayed after retry, ICF
may be broken.
Replace ICF.
T4-2-34
Dr. ZX / Fault Code
SATELLITE TERMINAL
Fault Code
Trouble
Remedy
Cause
14100-2
Abnormal
EEPROM
In case the internal memory is ab- Replace the controller.
normal.
14101-2
Abnormal
IB/OB Queue
In case the internal memory is ab- Replace the controller.
normal.
14102-2
Abnormal Lo- In case the data cannot receive from Check the transmitting
cal Loup Back the satellite,
antenna of satellite.
and
receiving
14103-2
The satellite is In case the satellite is not found.
not found.
and
receiving
14104-2
Fail 1 of Re- In case communication to the satel- Replace the controller.
mote
Loup lite terminal cannot be done.
Back
14105-2
Fail 2 of Re- In case communication to the satel- Replace the controller.
mote
Loup lite terminal cannot be done,
Back
14106-2
Sending and In case sending and receiving data Replace the controller.
receiving data are unmatched.
are
mismatched.
T4-2-35
Check the transmitting
antenna of satellite.
Dr. ZX / Fault Code
MONITOR UNIT
Fault Code
Trouble
Remedy
Cause
Thermistor temperature is 85 °C Cool the monitor unit and so on until
(185 °F) or higher.
temperature inside the monitor unit is less
than 85 °C (185 °F).
13303-2
Abnormal
Thermistor
Temperature
13304-2
Abnormal REG During REG input H level
Input H Level
13306-2
Abnormal
EEPROM
13308-2
Abnormal CAN Bus off occurs beyond five times.
Communication
13310-2
Shorted circuit The state, input 105±30 Ω or less, is Check coolant temperature sensor and
in
Coolant kept over 60 seconds.
harness.
Temperature
Sensor
13311-2
Shorted circuit The state, input 3±1 Ω or less, is Check fuel level sensor and harness.
in Fuel Level kept over 60 seconds.
Sensor
13311-4
Open circuit in The state, input 135±20 Ω or less, is Check fuel level sensor and harness.
Fuel
Level kept over 60 seconds.
Sensor
(Refer to the Troubleshooting flow chart.)
When failure reading EEPROM oc- If this fault code is displayed after retarial,
curs
replace the monitor unit.
T4-2-36
Refer to “CAN Harness Check”.
MEMO
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