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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1411 (Wiper System & Washer System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test D: The Washer Pump is Inoperative >> Pinpoint Test D: The Washer Pump Is Inoperative

Pinpoint Test D: The Washer Pump Is Inoperative

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. D1 CHECK THE MULTI-FUNCTION SWITCH INPUT TO THE SJB - MONITOR SJB PID FRNWIPER_W 
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: SJB DataLogger.
    • Monitor the SJB PID FRNWIPER_W while moving the multi-function switch to the WASH position.
    • Does the PID value agree with the multi-function switch position when WASH is selected? 
    1. YES  : Go to  D4.
    2. NO  : Go to  D2.
  2. D2 CHECK THE MULTI-FUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multi-function Switch C202
    • Carry out the Multi-Function Switch Component Test. Refer to COMPONENT TESTING .
    • Did the multi-function switch pass the component test? 
    1. YES  : Go to  D3.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  3. D3 CHECK CIRCUIT CRW07 (GY/BN) FOR AN OPEN 
    • Disconnect: SJB C2280d
    • Key in OFF position.
    • Measure the resistance between multi-function switch C202-10, circuit CRW07 (GY/BN), harness side and SJB C2280d-31, circuit CRW07 (GY/BN), harness side.
      • Fig 1: Checking Circuit CRW07 (GY/BN) For Open
      GF0028501Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D6.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. D4 CHECK CIRCUIT GD123 (BK/GY) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Washer Pump C137
    • Measure the resistance between washer pump C137-2, circuit GD123 (BK/GY), harness side and ground.
      • Fig 2: Checking Circuit GD123 (BK/GY) For Open
      GF0028502Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D5.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  5. D5 CHECK CIRCUIT CRW14 (BU/WH) FOR VOLTAGE 
    • Key in ON position.
    • While activating the front washer pump using the multi-function switch, measure the voltage between windshield washer pump C137-1, circuit CRW14 (BU/WH), harness side and ground.
      • Fig 3: Checking Circuit For Voltage
      GF0028503Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new windshield washer pump. REFER to WASHER PUMP . TEST the system for normal operation.
    2. NO  : VERIFY SJB fuse 14 (15A) is OK. If OK, go to  D6. If not OK, REFER to the appropriate Wiring Diagrams to identify the possible causes of the circuit short.
  6. D6 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the 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? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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