Rear Wiper Does Not Operate

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

REAR WIPER ACTIVE TEST
1. Turn on rear wiper using "ACTIVE TEST". Refer to "ACTIVE TEST ".
2. Make sure rear wiper operates.
- Wiper should operate.
OK or NG
- OK: GO TO 7
- NG: GO TO 2.
CHECK REAR WIPER MOTOR CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect BCM connector and rear wiper motor connector.
3. Check continuity between BCM harness connector terminals and rear wiper motor harness connector terminals.
  
  Fig 1: BCM Harness Connector Terminals And Rear Wiper Motor Harness Connector Terminals Continuity Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking Continuity Between BCM Harness Connector Terminals And Rear Wiper Motor Harness Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NO
- OK: GO TO 3.
- NO: Repair harness or connector.
CHECK GLASS HATCH AJAR SWITCH
1. Make sure hatch glass is closed.
2. Check continuity between BCM connector M19 terminal 42 (GR) and ground.
- 42 (GR) - Ground: Continuity should not exist.
OK or NG
- OK: GO TO 4.
- NG: Repair harness if shorted. If not, refer to "DOOR SWITCH CHECK " for further glass hatch ajar switch diagnosis.
Fig 3: Checking Continuity Between BCM Connector M19 Terminal 42 (GR) And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK REAR WIPER MOTOR AUTO STOP CIRCUITS
1. Disconnect BCM connector M18.
2. Check continuity between BCM harness connector terminals and rear wiper motor harness connector terminals.
  
  Fig 4: BCM Harness Connector Terminals And Rear Wiper Motor Harness Connector Terminals Continuity Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking Continuity Between BCM Harness Connector Terminals And Rear Wiper Motor Harness Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NO
- OK: GO TO 5.
- NO: Repair harness or connector.
CHECK REAR WIPER MOTOR AUTO STOP SWITCH GROUNDS
Check continuity between rear wiper motor harness connector D704 terminals and ground.

Fig 6: Rear Wiper Motor Harness Connector D704 Terminals And Ground Continuity Specification Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 7: Checking Continuity Between Rear Wiper Motor Harness Connector D704 Terminals And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: GO TO 6.
- NG: Repair harness or connector.
CHECK REAR WIPER OPERATING
1. Connect BCM connectors and rear wiper motor connector.
2. Select "RR WIPER" during "ACTIVE TEST". Refer to "ACTIVE TEST ". When rear wiper is operating, check voltage between BCM connector terminals.
  
  Fig 8: BCM Connector Terminals And Ground Voltage Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 9: Checking Voltage Between BCM Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Replace rear wiper motor. Refer to "REMOVAL AND INSTALLATION OF REAR WIPER MOTOR ".
- NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
CHECK COMBINATION SWITCH INPUT SIGNAL
Select "BCM" on CONSULT-II. With "WIPER" data monitor, make sure "RR WIPER INT", "RR WIPER ON" turn ON-OFF according to operation of wiper switch.
- When wiper switch is in INT position: RR WIPER INT ON
- When wiper switch is in ON position: RR WIPER ON ON
OK or NG
- OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
- NG: Check the wiper switch. Refer to "COMBINATION SWITCH READING FUNCTION ".
Fig 10: Identifying "RR WIPER INT" And "RR WIPER ON"
Courtesy of NISSAN MOTOR CO., U.S.A.