PINPOINT TEST B : The Rear Window Wiper Is Inoperative

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.

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	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes	GO to B3.
No	VERIFY BJB fuse 64 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the SYSTEM WIRING DIAGRAMS article 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	Courtesy of FORD MOTOR COMPANY	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	Courtesy of FORD MOTOR COMPANY	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	Courtesy of FORD MOTOR COMPANY	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.