Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the wiring and component
Check the cable between handset terminal #E4 and keypad unit terminal #A11. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access and replace the handset, see Center console components Center Console Components
- To access and replace the keypad unit and/or car-phone module, see Radio cassette player, replacing Radio Cassette Player, Replacing
- To connect the breakout box, see Connecting the breakout box, Car phone module Connecting the Breakout Box
- For information about signals and connectors, see Signal specification, Keypad unit / car-phone module (PHM) Signal Specification and Signal specification, Keypad unit / car-phone module (PHM) Signal Specification.









Select "Continue" when the fault has been remedied.

Continue - Verification

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Verification




Verification

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








- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Switch on the car-phone.
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 diagnostic trouble codes (DTCs).
Check that the relevant diagnostic trouble code (DTC) has switched status from permanent to intermittent fault.





Has the diagnostic trouble code (DTC) status changed?

Yes - Verification completed

No - 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 - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring and component

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