Pinpoint Test I: The Wipers Will Not Park at the Correct Position
Wipers and Washers
Pinpoint Test I: The Wipers Will Not Park at the Correct Position
Refer to Wiring Diagram Set 81 (Fusion/Milan/MKZ, Fusion Hybrid, Milan Hybrid, MKZ Hybrid), Front Wipers and Washers for schematic and connector information. Diagrams By Number
Normal Operation
Under normal operation, the wiper motor sends a ground signal through circuit CRW09 (BN/BU) to the wiper/washer module when the wipers are in the park position. If there is a open or short in circuit CRW09 (BN/BU) the wipers will not park and will stop in the position the wipers are currently in when the wipers are turned off.
This pinpoint test is intended to diagnose the following:
- Damaged wiper mounting arm and pivot shaft
- Pivot arm adjustment
- Wiring, terminals or connectors
- Wiper motor
- Wiper/washer module
PINPOINT TEST I: THE WIPERS WILL NOT PARK AT THE CORRECT POSITION
NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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I1 CHECK FOR WIPER MOUNTING ARM AND PIVOT SHAFT DAMAGE
- Check the wiper mounting arm and pivot shaft for damage.
- Is there damage to wiper mounting arm or pivot shaft?
Yes
If there is damage to mounting arm or pivot shaft, INSTALL a new wiper mounting arm or INSTALL a new pivot shaft. REFER to Wiper Mounting Arm and Pivot Shaft Wiper Mounting Arm and Pivot Shaft or Wiper Pivot Arm Wiper Pivot Arm.
No
GO to I2.
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I2 CHECK WIPER PIVOT ARM ALIGNMENT
- Check the wiper pivot arm adjustment.
- Is the wiper pivot arm correctly adjusted?
Yes
GO to I3.
No
ADJUST the wiper blade and pivot arm. REFER to Wiper Blade and Pivot Arm Adjustment Adjustments. TEST the system for normal operation.
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I3 CHECK WIPER MOTOR FOR A INTERNAL SHORT TO GROUND
- Ignition ON.
- Operate the wipers until the wipers are no longer in the PARK position and turn off the wipers.
- Ignition OFF.
- Disconnect: Wiper/Washer Module C2157.
- Measure the resistance between wiper/washer module C2157-7, circuit CRW09 (BN/BU), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to I5.
No
GO to I4.
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I4 CHECK WIPER PARK SIGNAL FOR A SHORT TO GROUND
- Disconnect: Wiper Motor C125.
- Measure the resistance between wiper motor C125-1, circuit CRW09 (BN/BU), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
INSTALL a new wiper motor. REFER to Wiper Motor Service and Repair. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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I5 CHECK WIPER PARK SIGNAL FOR AN OPEN
- Measure the resistance between wiper/washer module C2157-7, circuit CRW09 (BN/BU), harness side and wiper motor C125-1, circuit CRW09 (BN/BU), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to I6.
No
REPAIR the circuit. TEST the system for normal operation.
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I6 CHECK FOR CORRECT WIPER/WASHER MODULE OPERATION
- Disconnect all wiper/washer module connectors.
- Check for:
- corrosion.
- pushed-out pins.
- Connect all wiper/washer module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new wiper/washer module. REFER to Wiper/Washer Module Service and Repair.
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.
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