Pinpoint Test B: The Wipers Stay On Continuously

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: 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.

B1 CHECK WIPER MOTOR FOR SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Wiper Motor C125.
- Disconnect: Wiper/Washer Module C2157.
- Ignition ON.
- With the wipers in the OFF position, measure the voltage between wiper motor C125-3, circuit CRW15 (BN/WH), harness side and ground; and between wiper motor C125-5, circuit CRW16 (GY/BN), harness side and ground.
  
  Fig 1: Checking Circuit(s) For Short To Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes: REPAIR the circuit(s) for a short to voltage. TEST the system for normal operation.
- No: GO to B2.
B2 CHECK THE MULTIFUNCTION SWITCH
- Disconnect: Multifunction Switch C202.
- Carry out the Multifunction Switch component test.
  Refer to COMPONENT TESTING (Except Hybrid) and/or COMPONENT TESTING (Hybrid) for component testing.
- Did the multifunction switch pass the component test?
- Yes: GO to B3.
- No: INSTALL a new multifunction switch. REFER to REMOVAL AND INSTALLATION .
B3 CHECK FOR A SHORT TO GROUND IN THE MULTIFUNCTION SWITCH HARNESS
- Measure the resistance between ground and wiper/washer module:
  - C2157-8, circuit CRW08 (VT/OG), harness side.
  - C2157-13, circuit CRW17 (GN/VT), harness side.
  - C2157-14, circuit CRW19 (BU/OG), harness side.
  - C2157-6, circuit CRW18 (VT/WH), harness side.
  Fig 2: Checking Circuit(s) In Question
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: GO to B4.
- No: REPAIR the circuit(s) in question. TEST the system for normal operation.
B4 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 Removal and Installation .
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.