HFT System Symptom Troubleshooting - The HFT messages cannot be heard or are weak
Check for continuity between body ground and audio unit connector B (20P) terminals No. 19 and No. 9 individually.
Is there continuity?
YES
-
Short to body ground in the wire(s) between Hands Free Telephone control unit and audio unit. Replace the affected shielded harness.■
NO
-
Go to
Step 8
.