Diagnosis Procedure
Regarding Wiring Diagram information, refer to AV "Wiring Diagram".
1.CONNECTOR CHECK
Check the audio unit and speaker connectors for the following:
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair the terminals or connectors.
2.CHECK REAR DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY
1. Disconnect audio unit connector M44 and suspect rear door speaker connector.
2. Check continuity between audio unit connector M44 and suspect rear door speaker connector.
3. Check continuity between audio unit connector M44 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness or connectors.
3.CHECK REAR DOOR SPEAKER SIGNAL
1. Connect audio unit connector M44 and suspect rear door speaker connector.
2. Turn ignition switch to ACC.
3. Push audio unit POWER switch.
4. Check signal between the terminals of audio unit connector M44.
Is the inspection result normal?
YES >> Replace rear door speaker. Refer to AV "Removal and Installation".
NO >> Replace audio unit. Refer to AV "Removal and Installation".