LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1273 (Wipers And Washers) >> Diagnostic Tests >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test E: The Washer Pump is Inoperative >> Pinpoint Test E: The Washer Pump Is Inoperative

Pinpoint Test E: The Washer Pump Is Inoperative

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK THE WASHER PUMP OPERATION 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C125
      • Fig 1: Checking Washer Pump Operation
      GF0044497Courtesy of FORD MOTOR CO.
      CAUTION: To prevent damage to the washer pump during this pinpoint test step, do not leave jumper wire connected more than a few seconds.
    • Momentarily connect a fused jumper wire between windshield wiper motor C125-7, circuit 941 (BK/WH), harness side and the vehicle battery positive post.
    • Did the washer pump activate? 
    1. YES  : Go to  E4.
    2. NO  : Go to  E2.
  2. E2 CHECK CIRCUIT 57 (BK) FOR GROUND 
    • Disconnect: Washer Pump Motor C137
    • Measure the resistance between washer pump motor C137-2, circuit 57 (BK) harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. E3 CHECK CIRCUIT 941 (BK/WH) FOR AN OPEN 
      Fig 2: Checking Circuit 941 (BK/WH) For An Open
      GF0011481Courtesy of FORD MOTOR CO.
    • Measure the resistance between windshield wiper motor C125-7, circuit 941 (BK/WH), harness side and washer pump motor C137-1, circuit 941 (BK/WH), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new washer pump. REFER toWasher Pump and Reservoir .
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. E4 CHECK THE MULTIFUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202C
    • Carry out the Multifunction Switch Component Test. Refer to COMPONENT TESTING.
    • Did the multifunction switch pass the component test? 
    1. YES  : Go to  E5.
    2. NO  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article.
  5. E5 CHECK CIRCUIT 680 (LB/OG) FOR AN OPEN 
      Fig 3: Checking Circuit 680 (LB/OG) For An Open
      GF0011482Courtesy of FORD MOTOR CO.
    • Measure the resistance between windshield wiper motor C125-12, circuit 589 (OG), harness side and multifunction switch C202C-2, circuit 680 (LB/OG), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E6.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. E6 CHECK FOR CORRECT WIPER MOTOR OPERATION 
    • Disconnect all wiper motor connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect all wiper motor connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new windshield wiper motor. REFER to Wiper Motor .
    2. 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.
scientia non olet · About LEMON Manuals