Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the wiring and component

Hint: The hands-free microphone is connected to the phone module (PHM) via a connector in the right-hand A-post.




- Ignition off.
Check the cable between phone module (PHM) connector terminal A1 (terminal #1) and hands-free microphone connector C terminal A. Check for a short-circuit to supply voltage. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Try replacing the hands-free microphone if no fault is found in the wiring.
Remedy as necessary.

Other information:
- To access or replace the phone module (PHM), see
- To access and replace the hands-free unit, see Handsfree equipment, replacing Handsfree Equipment, Replacing
- To connect the breakout box, see Connecting the breakout box. Carphone module Connecting the Breakout Box
- For information about signals and connectors, see Signal description. Phone module (PHM) Signal Description, Phone Module (PHM).













Select "Continue" when the fault has been remedied.

Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on
- Switch on the carphone.
Make a call so that both the handset and the hands-free system are used. See the instruction manual.
Ignition off.
Ignition on.
Read off the diagnostic trouble codes (DTCs).
Check that the relevant diagnostic trouble code (DTC) has switched status from permanent to intermittent fault.





Has the status of the diagnostic trouble code (DTC) changed?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the wiring and component

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