Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
- Medium pressure switch (air conditioning) active or engine temperature greater than 105 锟斤拷C
- Air conditioning switched on and off once
NOTE: The triggering wire for relays stage 2, terminal 85, is monitored
Possible fault cause
- Short circuit to B+
- Relay faulty
- DME control module faulty
Affected terminals
Terminal IV/20
Diagnosis/troubleshooting
Fan Output Stage 2 - Above Limit
P0481
Fan Output Stage 2 - Above Limit
Function
Two two-stage electric fans are installed to keep the coolant cool. The electric fans are each triggered via two relays by the DME control module.
Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
NOTE: The triggering wire for relays stage 2, terminal 85, is monitored.