Wiper & Washer System (Circuit Diagnosis)
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK BCM OUTPUT VOLTAGE
- Turn ignition switch OFF.
- Disconnect rear wiper motor connector.
- Turn ignition switch ON.
- Check voltage between rear wiper motor harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Rear wiper motor
Connector
Terminal
D553
2
Ground
Battery voltage
Is the inspection result normal?
YES
Replace rear wiper motor. Refer to Removal and Installation .
NO
GO TO 2.
- CHECK REAR WIPER STOP POSITION SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector.
- Check continuity between BCM harness connector and rear wiper motor harness connector.
BCM
Rear wiper motor
Continuity
Connector
Terminal
Connector
Terminal
M20
84
D553
2
Yes
- Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M20
84
No
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Repair or replace harness.