Fault-Tracing Information

Fault-tracing information

Condition

Location Of Components, Additional Heater, Location In The Car:

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

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

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