DME 7.8

P1325

178 Camshaft Adjustment, Bank 2 - Signal Implausible

Diagnosis conditions
- Time elapsed after start-up greater than 5 seconds
- Engine temperature greater than -10 °C
- Engine speed between 680 rpm and 6.760 rpm
- No fault in camshaft adjustment output stage
- Reference mark OK
- No fault in camshaft position sensors
- No fault in engine temperature

Possible fault cause

NOTE: Camshaft does not reach early or late position

- Dirt in system
- Solenoid hydraulic valve mechanically blocked

Diagnosis/Troubleshooting












Figure 1:







Figure 2:

178 Camshaft Adjustment, Bank 2 - Below Limit

Diagnosis conditions
- Time elapsed after start-up greater than 5 seconds
- Engine temperature greater than -10 °C
- Engine speed between 680 rpm and 6.760 rpm
- No fault in camshaft adjustment output stage
- Reference mark OK
- No fault in camshaft position sensors
- No fault in engine temperature

Possible fault cause

NOTE: Solenoid hydraulic valve is triggered, camshaft does not switch into early position.

- Dirt in system
- Solenoid hydraulic valve mechanically blocked

Diagnosis/Troubleshooting












Figure 1:







Figure 2:

178 Camshaft Adjustment, Bank 2 - Above Limit

Diagnosis conditions
- Time elapsed after start-up greater than 5 seconds
- Engine temperature greater than -10 °C
- Engine speed between 680 rpm and 6.760 rpm
- No fault in camshaft adjustment output stage
- Reference mark OK
- No fault in camshaft position sensors
- No fault in engine temperature

Possible fault cause

NOTE: Solenoid hydraulic valve is not triggered, camshaft does not switch into late position.

- Dirt in system
- Solenoid hydraulic valve mechanically blocked

Diagnosis/Troubleshooting












Figure 1:







Figure 2: