MaxxECU Plugin - Engine Specifics
Audi S2/S4/S6 (AAN)
2015-10-16
1.
4.
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Fig 1 - MaxxECU Audi AAN kit consist of the following parts:
1. MaxxECU CMC connector
2. Audi vehicle harness adapter.
3. 16-pin extra connector.
4. 3-pin connector for extra 0-5v sensor (ex. pressure sensor).
ECU installation
Stock Engine Control Unit (ECU) on this vehicle is mounted on passenger side floor, under the glove compartment.
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Remove the carpet and the black large plastic guard, where the ECU is located.
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Disconnect the stock ECU from vehicle harness connector.
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Install MaxxECU harness into vehicle harness connector.
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Install included MAP-sensor into engine manifold with included hose kit.
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MaxxECU uses stock air temperature sensor (highly recommended to replace it to get a more accurade IAT reading).
Maxxtuning AB - www.maxxtuning.eu - info@maxxtuning.se
16-pin connector
1
2
3
4
9
10
11
12
5
6
7
8
13
14
15
16
5V SENSOR SUPPLY, (G1)
Fig 2 - Extra connector (3)
seen from cable side.
THROTTLE SENSOR, (G2)
AIR TEMP SENSOR, (F2)
COOLANT SENSOR, (F1)
1: Wideband.
ANALOG IN 1, TEMP, (J1)
2: Wideband.
ANALOG IN 2, TEMP, (J2)
3: Wideband.
ANALOG IN 3, 0-5V, (J3)
4: Wideband.
ANALOG IN 4, 0-5V, (J4)
5: INJ 7 (output).
DIGITAL IN 1, (K3)
6: INJ
8 (output).
DIGITAL
2, (K4)
7: GPO 3IN(output).
8: GPO
4 GND
(output).
SENSOR
IGNITION CYL 1, (A2)
IGNITION CYL 2, (A3)
IGNITION CYL 3, (B2)
IGNITION CYL 4, (B3)
IGNITION CYL 5, (C2)
IGNITION CYL 6, (C3)
IGNITION CYL 7, (D2)
IGNITION CYL 8, (D3)
9: Wideband.
10: Wideband.
11: Wideband.
12: +12V (output).
13: GND.
14: AIN 1 (temperature / switch) (input).
15: AIN 2 (temperature / switch) (input).
16: AIN 3 (0-5V) (input).
INJECTOR CYL 1, (K1)
DA (PIN3)
Extra inputs.
INJECTOR CYL 2, (K2)
MaxxECU AAN Plugin has 4 extra flexible inputs.
INJECTOR CYL 3, (M1)
AIN 1, temp sensor or switches.
INJECTOR CYL 4, (M2)
AIN 2, temp sensor or switches.
INJECTOR CYL 5, (M3)
AIN 3, 0-5V input.
AIN 4, 0-5V input. Extra 3-pin connector (4).
INJECTOR CYL 6, (L3)
Fig 3 - 3-pin
Superseal connector.
1: Signal GND.
2: AIN 4 (0-5V) input.
3: +5V from ECU.
WBO2 HTR PIN 4, (D1)
INJECTOR CYL 7, (L2)
TRIGGER
HOME/CAM
INJECTOR CYL 8, (L1)
12V INJECTORS
GP OUT 1, (B4)
GP OUT 2, (C4)
GP OUT 3, (D4)
Extra outputs.
GP OUT 4, (E4)
MaxxECU AAN Plugin
flexible
12V offers
ECU, (M4) 4 extra outputs for
GP OUT
5, (A1) control like boost control, fan control.
INJ 7, INJ 8, GPO 3, GPO 4 (GND switched outputs).
GP OUT 6, (B1)
Relay wirings
+12V
Fuse!
GP OUT 7, (C1)
ENGINE GROUND
30
TACH/GP OUT 8, (A4)
85
12V ECU, (C)
12V GP OUT
86
87
12V IGNITION, (D)
Fan / pump
etc.
from ECU GPO
Plugin Trigger
Audi 5-cylinder engines is using an unique trigger decoder which take use of three inputs.
Trigger + HOME + DINx.
It’s extremely important that HOME signal (flywheel sensor nr 2) is triggered in the middle of 2 Trigger teeths.
In MTune, RealTime Data tab --> Trigger, ”Home position” which should be within 10-90% to perform best.
Be sure to also check this value on higher RPMs.
The only thing that controls the HOME POSITION is the polarity of the HOME input, please modify (if possible) using ”Trigger
Polarity”, Inputs ---> Trigger/Home inputs and ”Trigger input”.
Notes
MaxxECU has some built in output test and diagnostics, see Diagnostics ---> Output test to test certain outputs.
This will only work if fuel pump is set to ”Always active” since fuel pump relay is also powering injectors and ignition.
Dynotuning
Engine Management
Motorsport
2