P0481

P0481

495 Fan output stage 2 - open circuit

Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
- Medium pressure switch (air conditioning) active or engine temperature greater than 105 °C
- Air conditioning switched on and off once

NOTE: The triggering wire for relays stage 2, terminal 85, is monitored

Possible fault cause
- Open circuit
- Relay faulty
- DME control module faulty

Affected terminals
Terminal IV/20

Diagnosis/troubleshooting

Part 1:

Part 2:

495 Fan output stage 2 - below limit

Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
- Medium pressure switch (air conditioning) active or engine temperature greater than 105 °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 ground
- Relay faulty
- DME control module faulty

Affected terminals
Terminal IV/20

Diagnosis/troubleshooting







495 Fan output stage 2 - above limit

Diagnosis conditions
- Engine running
- Battery voltage greater than 7 V
- Medium pressure switch (air conditioning) active or engine temperature greater than 105 °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