Communication with the heater
â–¶ How to fix
Check that the heater is receiving power.Check connectors and wiring.Check the CAN bus cables and connectors.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Missing response from the heater.
Possible cause
Connector or cable fault. The heater may have an internal fault or may not have a voltage supply. There may be an open circuit or poor contact in the cable harness for the CAN communication to the affected heater.