Fault Code 37

Fault code 37

CAN signal for PCM

NOTE:
- The CAN comfort bus is connected to the following control units:
- Instrument cluster
- Air-conditioning system regulator
- PCM2/CDR23 (if present)
- Communication between the 9588 Porsche System Tester II and the air-conditioning system regulator or PCM2/CDR23 (if present occurs via the instrument cluster and the CAN comfort bus.

Diagnostic conditions
- Ignition on

Possible cause of fault
- Signal from PCM(2) absent or implausible
- PCM(2) faulty

Diagnosis/troubleshooting