Fault-Tracing Information

Fault-tracing information

Condition




Diagnostic trouble codes (DTCs) missing in additional heater control module.

Possible source
- Open-circuit in the D+ cable.
- Short-circuit to ground in the D+ cable.
- Contact resistance in control module connector.
- Low battery voltage.
- Contact resistance in 6-pin heater connector.

Fault symptom[s]
- Poor heating in passenger compartment.