Regarding Wiring Diagram Information, Refer To.
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK OPTICAL SENSOR POWER SUPPLY INPUT
- Turn the ignition switch OFF.
- Disconnect the optical sensor harness connector M15.
- Turn the ignition switch ON.
- Turn the lighting switch to AUTO.
- Check the voltage between the optical sensor harness connector M15 and ground.
(+) (-) Voltage
(Approx.)Connector Terminal M15 1 Ground 5 V
Is the inspection result normal?
YES
GO TO STEP 2 .
NO
GO TO STEP 3 .
- CHECK OPTICAL SENSOR GROUND CIRCUIT
- Turn the ignition switch OFF.
- Check continuity between the optical sensor harness connector M15 and ground.
(+) (-) Continuity Connector Terminal M15 3 Ground Yes
Is the inspection result normal?
YES
GO TO STEP 6
NO
GO TO STEP 5
- CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT
- Turn the ignition switch OFF.
- Disconnect the BCM harness connector M18.
- Check continuity between optical sensor harness connector M15 and BCM harness connector M18.
Optical sensor BCM Continuity Connector Terminal Connector Terminal M15 1 M18 3 Yes
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace the harness or connectors.
- CHECK OPTICAL SENSOR POWER SUPPLY FOR SHORT CIRCUIT
Check continuity between optical sensor harness connector M15 terminal 1 and ground.
(+) (-) Continuity Connector Terminal M15 1 Ground No Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness or connector.
- CHECK OPTICAL SENSOR GROUND FOR OPEN CIRCUIT
- Turn ignition switch OFF.
- Disconnect the BCM harness connector M18.
- Check continuity between optical sensor harness connector M15 terminal 3 and BCM harness connector M18 terminal 17.
Optical sensor BCM Continuity Connector Terminal Connector Terminal M15 3 M18 17 Yes
Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness or connector.
- CHECK OPTICAL SENSOR SIGNAL OPEN CIRCUIT
- Turn ignition switch OFF.
- Disconnect optical sensor connector and BCM connector.
- Check continuity between optical sensor harness connector and BCM harness connector.
Optical sensor BCM Continuity Connector Terminal Connector Terminal M15 2 M18 4 Yes - Check continuity between optical sensor harness connector and ground.
Connector Terminal (-) Continuity M15 2 Ground No
Is the inspection result normal?
YES
Replace the optical sensor. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness or connectors.