Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Checking Handset
In case of lost function of the handset, this may be due to problems in the cable between Phone module (PHM) and handset.
- Ignition off.
Check the cable (microphone signal) between Phone module (PHM) A19(#19) and secrecy handset's connector 1(#21) for open circuit according to: CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Check the cable (loudspeaker signal) between Phone module (PHM) A20(#20) and secrecy handset's connector 2(#22) for open circuit according to: CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Check the cable (voltage feed) between Phone module (PHM) A7(#7) and secrecy handset's connector 5(#25) for open circuit according to: CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Check the cable (cradle signal) between Phone module (PHM) A8(#8) and secrecy handset's connector 4(#24) for open circuit according to: CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Check the cable (ground) between Phone module (PHM) A18(#18) and secrecy handset's connector 3(#23) for open circuit according to: CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Try replacing the handset.
Remedy as necessary.
Other information
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.