Pinpoint Test B: The Rear Window Wiper Is Inoperative

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

B1 CHECK THE REAR WIPER DELAY 1 (R_WIPE_DEL1) PID
- Ignition ON.
- Using a scan tool, view SCCM PIDs .
- While monitoring the SCCM PID R_WIPE_DEL1, place the wiper/washer switch into the rear window wiper INT 1 position.
Does the PID read ON when the wiper/washer switch is in the INT 1 position?
- Yes : GO to B2 .
- No : For vehicles without the police package, INSTALL a new wiper/washer switch. REFER to WIPER AND WASHER SWITCH . If the concern is still present, INSTALL a new SCCM , REFER to STEERING COLUMN CONTROL MODULE (SCCM) .
  For vehicles with the police package, INSTALL a new multifunction switch. REFER to STEERING COLUMN MULTIFUNCTION SWITCH . If the concern is still present, INSTALL a new SCCM , REFER to STEERING COLUMN CONTROL MODULE (SCCM) .

B2 CHECK THE REAR WINDOW WIPER MOTOR VOLTAGE CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: Rear Window Wiper Motor.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C476-1		Ground

Is the voltage greater than 11 volts?

Yes : GO to B3 .
No : VERIFY BJB fuse 64 (15A) is OK. See OEM FUSE AND RELAY INFORMATION . If OK, REPAIR the circuit. If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

B3 CHECK THE REAR WINDOW WIPER MOTOR GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement/Action	Negative Lead
C476-3		Ground

Is the resistance less than 3 ohms?

Yes : GO to B4 .
No : REPAIR the circuit.

B4 CHECK THE REAR WINDOW WIPER MOTOR INPUT SIGNAL

Connect:

Positive Lead	Measurement/Action	Negative Lead
C476-1		C476-2

Ignition ON.
Place the wiper/washer switch into the rear window wiper INT 2 position and observe the test lamp.

Does the test lamp illuminate briefly approximately once every 3 to 5 seconds?

Yes : GO to B6.
No : GO to B5 .

B5 CHECK THE REAR WINDOW WIPER MOTOR INPUT SIGNAL FOR AN OPEN

Ignition OFF.
Disconnect: Windshield Wiper Motor.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C476-2		C125-11

Is the resistance less than 3 ohms?

Yes : GO to B7.
No : REPAIR the circuit.

B6 CHECK FOR CORRECT REAR WINDOW WIPER MOTOR OPERATION
- Ignition OFF.
- Inspect the rear window wiper motor connector.
- Repair:
  - corrosion (replace connector or terminals - clean module pins)
  - damaged or bent pins - replace terminals/pins
  - pushed-out pins - replace pins as necessary
- Reconnect the rear window wiper motor connector. Make sure it seats and latches correctly.
- Connect: Windshield Wiper Motor
- Operate the system and verify the concern is still present.
Is the concern still present?
- Yes : CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSBs address this concern, INSTALL a new rear window wiper motor. REFER to WIPER MOTOR - REAR WINDOW .
- No : The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
B7 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
- Inspect the windshield wiper motor connector.
- Repair:
  - corrosion (replace connector or terminals - clean module pins)
  - damaged or bent pins - replace terminals/pins
  - pushed-out pins - replace pins as necessary
- Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
- Connect: Rear Window Wiper Motor
- Operate the system and verify the concern is still present.
Is the concern still present?
- Yes : CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new windshield wiper motor. REFER to WIPER MOTOR - WINDSHIELD
- No : The system is operating correctly at this time. The concern may have been caused by module connections. Address the root cause of any connector or pin issues.