Go to step 5.
NO -
Intermittent failure, the system is OK at this time.?
5. Turn the ignition switch to LOCK (0).
6. Disconnect the roof console 20P connector.
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Check for continuity between body ground and HandsFreeLink control unit 28P connector terminals No. 13 and No. 14 individually, then
between terminals No. 12 and No. 13.
Is there continuity?
YES -
There is a short in the wires between the HandsFreeLink control unit and the HFL microphone. Replace the affected shielded harness.?
NO -
Go to step 9.
9. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 13 and No. 14 and roof console 20P connector
terminals No. 20 and
No. 19 respectively.
Is there continuity?
YES -
Substitute a known-good HandsFreeLink control unit See: Accessories and Optional Equipment/Cellular Phone/Communications Control
Module/Service and Repair, and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit See: Accessories
and Optional Equipment/Cellular Phone/Communications Control Module/Service and Repair. If the symptom is still present, replace the HFL
microphone See: Accessories and Optional Equipment/Voice Activation System/Voice Activation Microphone/Service and Repair/HFL
Microphone Removal/Installation.?
