Test Point 27 - Transverse Acceleration Sensor
TEST POINT 27 - Transverse acceleration sensor - Fault code 54Possible 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 with the ignition switched on.
3) Check wiring according to wiring diagram
- Check continuity from:
- Pin 45/Tiptronic control unit connector to pin 3/sensor
- Pin 40 Tiptronic control unit to pin 2 sensor
- Pin 44 Tiptronic control unit to pin 1 sensor
- Check pins 2 and 3 sensor for short to ground
- Check pins 1, 2 and 3 sensor for short to positive