Pinpoint Test G: The Washer Pump Stays On Continuously

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

G1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCs)
- Retrieve any continuous DTCs.
- Enter the following diagnostic mode on the diagnostic tool: Clear Continuous DTCs.
- Enter the following diagnostic mode on the diagnostic tool: SJB Wiper/Washer Self-Test.
- Are DTCs present?
- Yes : If DTC B1458, GO to G2.
  If DTC B1458, CARRY OUT the multi-function switch component test. Refer to the appropriate SYSTEM WIRING DIAGRAMS for component testing. If the switch tests OK, GO to G3.
- No : CARRY OUT the washer relay component test. Refer to the appropriate SYSTEM WIRING DIAGRAMS for component testing. If the relay tests OK, GO to G4.
G2 CHECK CIRCUIT 686 (TN/RD) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: Washer Relay.
- Disconnect: SJB C2280a.
- Measure the resistance between ground and washer relay pin 1, circuit 686 (TN/RD).
  
  Fig 1: Checking Circuit 686 (TN/RD) For A Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes : GO to G5.
- No : REPAIR circuit 686 (TN/RD) for a short to ground. TEST the system for normal operation.
G3 CHECK CIRCUIT 950 (WH/BK) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: Multi-function Switch C202a.
- Disconnect: SJB C2280d.
- Measure the resistance between ground and multi-function switch C202a-5, circuit 950 (WH/BK).
  
  Fig 2: Checking Circuit 950 (WH/BK) For A Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes : GO to G5.
- No : REPAIR circuit 950 (WH/BK) for a short to ground. TEST the system for normal operation.
G4 CHECK CIRCUIT 941 (BK/WH) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Disconnect: Washer Relay.
- Disconnect: Washer Motor C137.
- Key in ON position.
- Measure the voltage between ground and washer relay pin 5, circuit 941 (BK/WH).
  
  Fig 3: Checking Circuit 941 (BK/WH) For A Short To Voltage
  Courtesy of FORD MOTOR CO.
- Is voltage present?
- Yes : REPAIR circuit 941 (BK/WH) for a short to voltage. TEST the system for normal operation.
- No : GO to G5.
G5 CHECK FOR CORRECT SJB OPERATION
- Disconnect all SJB connectors.
- Check for:
  - Corrosion.
  - Pushed-out pins.
- Connect all the SJB 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 SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
  CLEAR the DTCs, REPEAT the self-test.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.