Level Adjustment

Fault code 1772

Pressure sensor signal line

Diagnostic conditions
- Ignition on
- Internal function test on level adjustment control unit

Possible fault causes
- Leak in the compressed air lines
- Short circuit to B+ in the wiring of pin 67, 84 or 92 of the level adjustment control unit
- Short circuit to ground in the wiring of pin 67, 84 or 92 of the level adjustment control unit
- Open circuit in the wiring of pin 67, 84 or 92 of the level adjustment control unit
- Level adjustment control unit receives implausible signal from pressure sensor
- Pressure sensor faulty
- Level adjustment control unit faulty

Affected pins
Level adjustment control unit, connector A:
- Pin 34
- Pin 67 'Pressure sensor power supply'

Level adjustment control unit, connector B:
- Pin 84 'P signal'
- Pin 92 'Pressure sensor ground'

Solenoid block, connector A:
- Pin 8
- Pin 9 'P signal'

Diagnosis/troubleshooting