Signal Missing. Permanent Fault

Signal missing. Permanent fault

Checking the wiring and component




- Ignition off.
Check the cable between carphone module connector terminal A14 (terminal #14) and the handset cradle signal D6 (terminal #37) for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between carphone module connector terminal A2 (terminal #2) and the handset signal ground D5(#36) for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Try replacing the carphone handset if no fault is found in the wiring.
Remedy as necessary.

Other information:
- To access or replace the carphone module, see Phone module (PHM), replacing Service and Repair
- To access and replace the handset, see Handset, replacing Handset, 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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