Wake-up signal GSM
â–¶ How to fix
Check the cable harness and connectors. Check that there is contact between the GSM control unit and the CAN bus.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Short circuit to earth on control unit pin C15.
Possible cause
Fault in the cable harness or connectors. The GSM control unit has no contact with the CAN bus.