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Home >> Ford >> 2004 >> Excursion 6.0 P, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1736 (Wiper System And Washer System) >> Diagnostic Tests >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test H: The Washer Pump is Inoperative - Front >> Pinpoint Test H: The Washer Pump Is Inoperative - Front
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Pinpoint Test H: The Washer Pump Is Inoperative - Front

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. H1 CHECK THE MULTI-FUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multi-function Switch C2081
    • Carry out the multi-function switch component test. Refer to COMPONENT TESTING article.
    • Did the multi-function switch pass the component test? 
    1. YES  : Go to  H2.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  2. H2 CHECK CIRCUIT 686 (TN/RD) FOR VOLTAGE 
    • Connect: Multi-function Switch C2081
    • Disconnect: Windshield Washer Pump C137
    • Key in ON position.
      • Fig 1: Checking Circuit For Voltage
      GF0023860Courtesy of FORD MOTOR CO.
    • While activating the front washer pump using the multi-function switch, measure the voltage between windshield washer pump C137-1, circuit 686 (TN/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  H3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. H3 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking Circuit For Open
      GF0023861Courtesy of FORD MOTOR CO.
    • Measure the resistance between windshield washer pump C137-2, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new windshield washer pump. REFER to Washer Pump - Windshield . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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