C3 air intake wiring diagram help please

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discv
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C3 air intake wiring diagram help please

Post by discv »

Citroen C3 1.4i 2007- VF7**************[VIN obfuscated, can be read by forum staff].
I am trying to trace my missing voltage from the Throttle Position Sensor -track 1.
Could I have some help please with the wiring of Intake Throttle Valve [1635 R8] and the Accelerator Pedal [1601 V8] to their termination at the ECU. I guess that's here they finish up!
[The ECU is the Valeo SW9664127180]
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GiveMeABreak
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Re: C3 air intake wiring diagram help please

Post by GiveMeABreak »

Ok, so the TPS (1261) has the following wiring and terminates in the engine ECU at the 48 Pin Black Connector (see Engine ECU corresponding pins at top of diagram F2 to E2): The TPS plug goes into the main harness 46 HAB, but you now know the Engine ECU pins from the TPS that are part of the 48 pin engine ECU connector.

The Air Intake Throttle Valve wires in the second diagram (1262) are shown below the picture and these terminate in the Engine ECU 32 pin Brown Connector, They disappear into Harness 20 MOT - and emerge again at the pins in the Engine ECU plug as shown.
TPS.PNG
Throttle Position Sensor
Air Intake Throttle Valve.PNG
Air Intake Throttle Valve.PNG (30.28 KiB) Viewed 418 times
Air Intake Throttle Valve
1377 (White): Accelerator pedal 1 position info
1379 (Green): Accelerator pedal position earth
1378 (Beige): Accelerator pedal 2 position info
1380 (Purple): + 5 volt accelerator pedal position indicator power supply
731 (Red): Accelerator pedal point of resistance / signal
1367 (Brown): Motorised Butterfly Potentiometer Earth
1218 (Yellow): Throttle Potentiometer Position Signal 1
1371 (Beige): Throttle Motor Command by +
1372 (Purple): Throttle Motor Command by -
1220 (Green): Throttle Potentiometer Supply 5V
1219 (Red): Throttle Potentiometer Position Signal 2
discv
(Donor 2020)
Posts: 145
Joined: 12 Jul 2017, 17:40
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Re: C3 air intake wiring diagram help please

Post by discv »

Exactly what I was looking for! Many thanks.