Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK REVERSE INPUT SIGNAL
- Turn ignition switch ON.
- Shift the selector lever to R (reverse).
- Check voltage between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and ground.
AV control unit Ground Condition Voltage
(Approx.)(+) (-) Connector Terminal M45 (with audio amplifier) 28 Selector lever is in "R". Battery Voltage M98 (without audio amplifier)
Is inspection result normal?
YES
GO TO STEP 2 .
NO
Repair or replace harness or connectors.
- CHECK CAMERA POWER SUPPLY CIRCUIT CONTINUITY
- Turn ignition switch OFF.
- Disconnect AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector.
- Check continuity between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector C151.
AV control unit Rear view camera Continuity Connector Terminal Connector Terminal M45 (with audio amplifier) 34 C151 1 Yes M98 (without audio amplifier) - Check continuity between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and ground.
AV control unit Ground Continuity Connector Terminal M45 (with audio amplifier) 34 No M98 (without audio amplifier)
Is inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace harness or connectors.
- CHECK CAMERA POWER SUPPLY VOLTAGE
- Connect AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector.
- Turn ignition switch ON.
- Shift the selector lever to R (reverse).
- Check voltage between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) nd ground.
AV control unit Ground Condition Voltage
(Approx.)(+) (-) Connector Terminal M45 (with audio amplifier) 34 Selector lever is in "R". 6.0 V M98 (without audio amplifier)
Is inspection result normal?
YES
GO TO STEP 4 .
NO
Replace AV control unit. Refer to REMOVAL AND INSTALLATION .
- CHECK CAMERA IMAGE SIGNAL CIRCUIT CONTINUITY
- Turn ignition switch OFF.
- Disconnect AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector.
- Check continuity between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector C151.COMP +
AV control unit Rear view camera Continuity Connector Terminal Connector Terminal M45 (with audio amplifier) 36 C151 3 Yes M98 (without audio amplifier) COMP -AV control unit Rear view camera Continuity Connector Terminal Connector Terminal M45 (with audio amplifier) 35 C151 4 Yes M98 (without audio amplifier) - Check continuity between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and ground.
AV control unit Ground Continuity Connector Terminal M45 (with audio amplifier) 36 No M98 (without audio amplifier)
Is inspection result normal?
YES
GO TO STEP 5 .
NO
Repair or replace harness or connectors.
- CHECK CAMERA GROUND CIRCUIT CONTINUITY
Check continuity between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector C151.
AV control unit Rear view camera Continuity Connector Terminal Connector Terminal M45 (with audio amplifier) 33 C151 2 Yes M98 (without audio amplifier) Is inspection result normal?
YES
GO TO STEP 6 .
NO
Repair or replace harness or connectors.
- CHECK CAMERA IMAGE SIGNAL
- Connect AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and rear view camera connector.
- Turn ignition switch ON.
- Shift the selector lever to R (reverse).
- Check signal between AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) and ground.
AV control unit connector M45 (with audio amplifier) or M98 (without audio amplifier) Condition Reference value (+) (-) Terminal Terminal 36 35 Camera image displayed.
Is inspection result normal?
YES
Replace AV control unit. Refer to REMOVAL AND INSTALLATION .
NO
Replace rear view camera. Refer to REMOVAL AND INSTALLATION .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.