Gateway

Fault code 0478

Air-conditioning system regulator control module, rear

Diagnostic conditions
- Ignition on
- Internal gateway function test

Possible causes of fault
- No signal/communication (no signal from rear air-conditioning system regulator control module on CAN comfort)

Affected pins
Instrument cluster, plug B:
- Pin 27 'CAN comfort (high)'
- Pin 28 'CAN comfort (low)'

Diagnosis/troubleshooting