Test Point 25 - Transverse Acceleration Sensor

TEST POINT 25 - Transverse acceleration sensor - Fault code 54

Possible Causes, Elimination, Remarks
Upshifting In curves Is not prevented.

Detectable faults: Open circuit/short to ground, short to positive

1) Check sensor with Tester 9288 (actual values) (Nominal value around 0 g with vehicle on level surface. Sensor can be checked by raising the vehicle on one side).

2) Remove connector from sensor.
- Check sensor supply (5 V) to pin 3 and ground at pin 1.

3) Check wiring according to wiring diagram

Check continuity
- from pin 45/ECU to pin 3/sensor
- from pin 40/ECU to pin 2/sensor
- from pin 44/ECU to pin 1/sensor
- Short to ground at pin 2 and pin 3/sensor to pin 7/ECU (ground)
- Short to positive: Pins 1, 2 and 3/sensor to pin 1/ECU (positive)
- Check ground connection of pin 44/ECU

Wiring o.k.: Replace sensor

Fault persists: ECU faulty