Diagnosis Procedure
Regarding Wiring Diagram information, refer to AV "Wiring Diagram".
1.CONNECTOR CHECK
Check the AV control unit and speaker connectors for the following:
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair the terminals or connectors.
2.CHECK FRONT DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY
1. Disconnect AV control unit connector M70 and suspect front door speaker connector.
2. Check continuity between AV control unit connector M70 and suspect front
door speaker connector.
3. Check continuity between AV control unit connector M70 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness or connectors.
3.CHECK FRONT DOOR SPEAKER SIGNAL
1. Connect AV control unit connector M70 and suspect front door speaker connector.
2. Turn ignition switch to ACC.
3. Push AV control unit POWER switch.
4. Check signal between the terminals of AV control unit connector M70.

Is the inspection result normal?
YES >> Replace front door speaker. Refer to AV "Removal and Installation".
NO >> Replace AV control unit. Refer to AV "Removal and Installation".
Power supply and ground circuitAV CONTROL UNIT AV CONTROL UNIT : Diagnosis Procedure Regarding Wiring Diagram information, refer to AV "Wiring Diagram". 1.CHECK FUSE Check that the following fuses are not blown. Are ...

Diagnosis Procedure Regarding Wiring Diagram information, refer to AV "Wiring Diagram". 1.CONNECTOR CHECK Check the AV control unit and speaker connectors for the following: Proper ...
Power supply and ground circuit
Diagnosis Procedure
1.CHECK GROUND CONNECTION
Turn ignition switch OFF.
Check ground connection E. Refer to Ground Inspection in GI, "Circuit
Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ECM G ...
U1000 Can comm circuit
Description
CAN (Controller Area Network) is a serial communication line for real-time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, and ...