Pinpoint Test I: The Rear Wiper Wash and Wipe Function Does Not Operate (Freestyle Only): Testing
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
- I1 CHECK THE LIFTGATE AJAR PID
- Monitor the liftgate ajar PID while opening and closing the liftgate.
- Does the liftgate ajar PID agree with the liftgate position?
- Yes : GO to I2.
- No : REFER to INTERIOR LIGHTING to diagnose the liftgate ajar circuit.
- I2 CHECK LIFTGATE AJAR CIRCUIT 700 (WH/PK) FOR AN OPEN
- Key in OFF position.
- Disconnect: SJB C2280c.
- Disconnect: Liftgate Ajar Switch C479.
- Using the following table, measure the resistance between SJB C2280c, rear window wiper motor C476, and liftgate ajar switch C479 harness side:REAR WINDSHIELD WIPER MOTOR C476 CONNECTOR-PIN REFERENCE
SJB C2280C Liftgate ajar switch C479 Rear Window Wiper Motor C476 C2280c-5, circuit 700 (WH/PK) C479-C, circuit 700 (WH/PK) - C2280c-5, circuit 700 (WH/PK) - C476-3, circuit 700 (WH/PK) - C479-C, circuit 700 (WH/PK) C476-3, circuit 700 (WH/PK) - Are the resistances less than 5 ohms?
- Yes : GO to I3.
- No : REPAIR the circuit(s) in question. TEST the system for normal operation.
- I3 CHECK THE WIPER SWITCH
- Disconnect: Wiper Switch C202a.
Carry out the wiper switch component test. Refer to COMPONENT TESTING .
- Did the wiper switch pass the component test?
- Yes : GO to I4.
- No : INSTALL a new wiper switch. REFER to STEERING COLUMN SWITCHES .
- Disconnect: Wiper Switch C202a.
- I4 CHECK WIPER SWITCH CIRCUIT 1205 (BK) FOR OPEN
- Measure the resistance between wiper switch C202a-7, circuit 1205 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to I5.
- No : REPAIR the circuit. TEST the system for normal operation.
- I5 CHECK CIRCUIT 485 (PK/BK) FOR AN OPEN
- Measure resistance between wiper switch C202a-10, circuit 485 (PK/BK), harness side and C476-7, circuit 485 (PK/BK), harness side.
- Is the resistance less than 5 ohms?
- Yes : GO to I6.
- No : REPAIR the circuit. TEST the system for normal operation.
- I6 CHECK FOR CORRECT REAR WINDOW WIPER MOTOR OPERATION
- Disconnect all rear window wiper motor connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect the rear window wiper motor connectors and make sure they are seated correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new rear window wiper motor. REFER to WINDSHIELD WIPER MOTOR . TEST the system for normal operation.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation.