05-1929
DIAGNOSTICS
-
POWER WINDOW CONTROL SYSTEM
0523N-06
REMOTE OPERATION VIA MASTER SWITCH IS IMPOSSIBLE IN
THE OTHER DOOR (OPERATION VIA EACH DOOR SWITCH IS
POSSIBLE)
CIRCUIT DESCRIPTION
When the ignition switch is ON, the master switch (door ECU) sends a remote switch signal for the other seats
multiply to the body ECU, then the body ECU drives the power window motor for the other seats.
NOTICE:
The power window system has a function with a large-scale multiplex communications. First of all,
inspect the communication function depending on the ”how to proceed with troubleshooting”, and
check that there is no abnormality in the communication system. Then finally proceed with the troubleshooting.
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
2119
05-1930
DIAGNOSTICS
-
POWER WINDOW CONTROL SYSTEM
WIRING DIAGRAM
P5
Power Window Regulator Master Switch Assy (Door ECU)
MPX1
MPX2
8
7
Communication Line
6 B10 10 B9
MPX2
MPX1
7
GND1 B12
Multiplex Network Body ECU
PU
21 B10
PD
20 B10
RLD
13 B11
RLU
14 B11
RRU
9 B11
LG
W
O
RRD
8 B11
BR
W-B
Passenger
Side J/B
11 4H
B
11 IN2
GR
4 IN2
Y
LG
4
5
17 IA1
5 IA1
R
P
4 BB1
9 BB1
L-O
7 IO2
GR
R
L-O
5
4
1
1
1
W-B
2 IN1
1
4N
5
P12
SU
SD
Power Window Regulator
Switch Assy Rear (Rear RH)
E
4L
LG-B
P11
SU
SD
Power Window Regulator
Switch Assy Rear (Rear LH)
E
7
9 BC1
4 BC1
LG-B
4
P10
SU
SD
Power Window Regulator Switch
Assy (Passenger Side)
16 IO2
E
W-B
12 BB1
W-B
12 BC1
W-B
10 4L
Passenger Side J/B
1 4N
W-B
7
W-B
W-B
W-B
W-B
4L
W-B
IC
BA
BB
IC
B78735
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
2120
05-1931
DIAGNOSTICS
-
POWER WINDOW CONTROL SYSTEM
INSPECTION PROCEDURE
1
(a)
CHECK HAND-HELD TESTER
Monitor code
(1) Using the hand-held tester, inspect the monitor code of the door ECU.
HINT:
The monitor code shows the switch condition when a DTC is output.
When a monitor code is indicated while the switch is not operated, the switch is detected in being stuck.
When a monitor code is not indicated while the switch is operated, it is detected that the switch contact
condition is bad.
DTC Code
Item
B1221/21
Driver’s side switch 1 (operating)
Monitor Item
Any switch of the power window regulator master switch is ON
NG
Go to step 3
OK
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
2121
05-1932
DIAGNOSTICS
2
-
POWER WINDOW CONTROL SYSTEM
CHECK MULTIPLEX NETWORK BODY ECU
(a)
Inspect the output of the body ECU.
(1) Inspect the voltage between terminal 7 (GND1) and each terminal of the door which body ECU
is inoperative.
B12
B9
B10
B11
B51823
Standard:
Symbols (Terminal No.)
Condition
Specified Condition
PU (B10-21) ⇔ GND1 (B12-7)
Ignition switch ON,
master switch passenger side switch OFF → UP (manual operation)
0 V → 10 - 14 V
PD (B10-20) ⇔ GND1 (B12-7)
Ignition switch ON,
master switch passenger side switch OFF → DOWN (manual operation)
0 V → 10 - 14 V
RRU (B11-9) ⇔ GND1 (B12-7)
Ignition switch ON,
master switch rear RH side switch OFF → UP (manual operation)
0 V → 10 - 14 V
RRD (B11-8) ⇔ GND1 (B12-7)
Ignition switch ON,
master switch rear RH side switch OFF → DOWN (manual operation)
0 V → 10 - 14 V
RLU (B11-14) ⇔ GND1 (B12-7)
Ignition switch ON,
master switch rear LH side switch OFF → UP (manual operation)
0 V → 10 - 14 V
RLD (B11-13) ⇔ GND1 (B12-7)
Ignition switch ON,
master switch rear LH side switch OFF → DOWN (manual operation)
0 V → 10 - 14 V
HINT:
When an output to the passenger door is normal, proceed to OK-A.
When outputs to both rear doors are normal, proceed to OK-B.
When an output to either of the passenger door and both rear doors are abnormal, proceed to NG.
OK-B
NG
Go to step 4
REPLACE MULTIPLEX NETWORK BODY ECU
OK-A
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
2122
05-1933
DIAGNOSTICS
3
-
POWER WINDOW CONTROL SYSTEM
CHECK POWER WINDOW REGULATOR SWITCH ASSY (PASSENGER SIDE)
(a)
Check the continuity.
(1) Check the continuity between each terminal of the
connectors.
B31305
Standard:
Switch Operation
4
Measuring Condition
Specified Condition
Not operated
Terminal 4 ⇔ Terminal 1
Continuity
Not operated
Terminal 5 ⇔ Terminal 1
Continuity
OK
REPAIR OR
CONNECTOR
REPLACE
NG
REPLACE POWER
SWITCH ASSY
HARNESS
WINDOW
AND
REGULATOR
CHECK POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR RH AND LH)
(a)
Check the continuity.
(1) Check the continuity between each terminal of the
connectors.
B31305
Standard:
Switch Operation
Measuring Condition
Specified Condition
Not operated
Terminal 4 ⇔ Terminal 1
Continuity
Not operated
Terminal 5 ⇔ Terminal 1
Continuity
OK
REPAIR OR
CONNECTOR
REPLACE
HARNESS
NG
REPLACE POWER WINDOW
SWITCH ASSY REAR
AND
REGULATOR
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
2123