Signal Too Low. Intermittent Fault

Signal too low. Intermittent fault

Checking the wiring and component

Hint: The hands-free loudspeaker is connected to the car-phone module via a connector under the driver's seat.




- Ignition off.
Check the cable between the car-phone module connector A4 (terminal #4) and the hands-free loudspeaker connector B10. Check the cable between the car-phone module connector A5 (terminal #5) and the hands-free loudspeaker connector B9. Check these cables for a short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Try replacing the hands-free loudspeaker if no fault is found in the wiring.
Remedy as necessary.

Other information:
- To access or replace the hands-free unit, see Hands-free equipment, replacing Hands-Free Equipment, Replacing
- To access or replace the car-phone module, see Telephone module/-control module (PHM), changing Service and Repair
- 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 description. Phone module (PHM) Signal Specification.













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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

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Attempt New Test - Checking the wiring and component

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