Diagnosis Procedure
- CHECK STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)
- Turn ignition switch OFF.
- Disconnect audio unit connector and TEL adapter unit connector.
- Check continuity between audio unit harness connector and TEL adapter unit harness connector.
Audio unit TEL adapter unit Continuity Connector Terminal Connector Terminal M87 16 B6 18 Existed - Check continuity between audio unit harness connector and ground.
Audio unit Ground Continuity Connector Terminal M87 16 Not existed
Is inspection result normal?
YES
GO TO STEP 2 .
NO
Repair harness or connector.
- CHECK AUDIO UNIT VOLTAGE
- Connect audio unit connector and TEL adapter unit connector.
- Turn ignition switch ON.
- Check voltage between audio unit harness connector terminals.
(+) (-) Voltage
(Approx.)Audio unit Connector Terminal Connector Terminal M87 16 M87 15 3.3 V
Is inspection result normal?
YES
Replace TEL adapter unit. Refer to EXPLODED VIEW .
NO
Replace audio unit. Refer to REMOVAL AND INSTALLATION .