P1677

P1677

Engine Compartment Purge Fan Output Stage - Below Limit

Diagnosis conditions
- Engine running
- Battery positive voltage greater than 7 V
- Engine compartment purge fan switched on once
- Engine compartment temperature greater than 75 °C
- Front and rear lids closed

NOTE: The triggering wire for relay terminal 85 is monitored.

The rear lid may be opened to speed up the warming process. In order to proceed with the diagnosis, the rear lid must then be closed.

Possible fault cause
- Short circuit to ground
- Relay faulty
- DME control module faulty

Affected terminals
Terminal II/20

Diagnosis/Troubleshooting