No communication with auxiliary heater
Read the instructions below then start the fault diagnostic procedure.
Symptom: No communication with auxiliary heater (DAH).
No communication with auxiliary heater |
Fault symptoms
No communication with auxiliary heater (DAH).Conditions
The following conditions are applicable:• |
Ignition switch in ON position
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Diagnostic help
First, check the fuses for the DAH control module and that the data link connector pins for communication are in place.Then, check whether the DAH is awake and allowing diagnostics communication. If not, check to see if the diagnostic tool works in another car.
If no fault is found, rectify the communications lead between DAH and the data link connector.