Checking wiring and components
Check the cable between keypad unit/carphone module #A12 and hands-free loudspeaker #F1 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .
Check cable between keypad unit/carphone module #B9 and carphone box #C9 for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .
Check cable between keypad unit/carphone module #B10 and carphone box #C10 for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .
Try a new hands-free loudspeaker.
Try a new hands-free microphone.
Remedy as necessary.
Other information:
- To access/replace the hands-free microphone Hands-free microphone .
- To access/replace combined carphone box. Carphone box .
- To access/replace the keypad unit/carphone module:
- For -2004, see:Radio cassette player, replacing .
- For 2005-, see:Audio unit, replacing .
- For information about signals and connectors, see Signal specification, Keypad unit / carphone module (PHM) .
- Breakout box connection, refer to Connecting the breakout box, Carphone module .