Checking the ECU

Checking the ECU

Fault-tracing information
Before continuing with fault-tracing, the following must be checked:
- All tests for the relevant symptom must have been carried out
- No component, connector or wiring faults etc. should have been detected.

Have all tests been carried out and no faults detected?

Yes - Replacing the component

No - No Fault Found

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Replacing the component
Try a new car-phone module.

Caution! A new car-phone module is delivered without software. The car-phone module must be programmed in order to operate after replacement.

Other information:
- To program and access or replace the car-phone module, see Telephone module/-control module (PHM), changing Service and Repair.

Was a fault detected?

Yes - FAULT FOUND

No - No Fault Found

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