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 REAR WIPER MOTOR OUTPUT VOLTAGE
CONSULT
- Turn ignition switch OFF.
- Disconnect rear wiper motor connector.
- Turn ignition switch ON.
- Select "RR WIPER" in "Active Test" mode of "BCM".
- With operating the test item, check voltage between rear wiper motor harness connector and ground.
(+)
(-)
Condition
Voltage
(Approx.)
Rear wiper motor
Connector
Terminal
D553
1
Ground
REAR WIPER
On
Battery voltage
Off
0 V
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK REAR WIPER MOTOR 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
95
D553
1
Yes
- Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M20
95
No
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Repair or replace harness.
- CHECK REAR WIPER MOTOR GROUND OPEN CIRCUIT
Check continuity between rear wiper motor harness connector and ground.
Rear wiper motor
Ground
Continuity
Connector
Terminal
D553
3
Yes
Is the inspection result normal?
YES
Replace rear wiper motor. Refer to Removal and Installation .
NO
Repair or replace harness.