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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1096 (Wiper System & Washer System) >> Diagnostic Tests >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test I: The Washer Pump is Inoperative >> Pinpoint Test I: The Washer Pump Is Inoperative

Pinpoint Test I: The Washer Pump Is Inoperative

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
  1. I1 CHECK CIRCUIT CRW14 (BU/WH) FOR GROUND 
    • Disconnect: Washer Pump Motor C137
    • Key in ON position.
      • Fig 1: Measuring Resistance Between Washer Pump Motor C137-2, Circuit CRW14 (BU/WH) & Ground
      GF0031049Courtesy of FORD MOTOR CO.
    • Measure the resistance between washer pump motor C137-2, circuit CRW14 (BU/WH) harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I3.
    2. NO  : Go to  I2.
  2. I2 CHECK CIRCUIT CRW14 (BU/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C1552
      • Fig 2: Measuring Resistance Between Windshield Wiper Motor C1552-7, CRW14 (BU/WH) & Washer Pump Motor C137-2
      GF0031050Courtesy of FORD MOTOR CO.
    • Measure the resistance between windshield wiper motor C1552-7, circuit CRW14 (BU/WH), harness side and washer pump motor C137-2, circuit CRW14 (BU/WH), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I13.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. I3 CHECK CIRCUIT CRW23 (VT/GN) FOR GROUND 
      Fig 3: Measuring Resistance Between Washer Pump Motor C137-1, Circuit CRW23 (VT/GN) & Ground
      GF0031051Courtesy of FORD MOTOR CO.
    • Measure the resistance between washer pump motor C137-1, circuit CRW23 (VT/GN) harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I5.
    2. NO  : Go to  I4.
  4. I4 CHECK CIRCUIT CRW23 (VT/GN) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Rear Window Wiper Motor C4218
      • Fig 4: Measuring Resistance Between Rear Window Wiper Motor C4218-7, CRW23 (VT/GN) & Washer Pump Motor C137-1
      GF0031052Courtesy of FORD MOTOR CO.
    • Measure the resistance between rear window wiper motor C4218-7, circuit CRW23 (VT/GN), harness side and washer pump motor C137-1, circuit CRW23 (VT/GN), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  I14.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  5. I5 CHECK CIRCUIT CRW14 (BU/WH) FOR VOLTAGE 
    NOTE: Holding the multi-function switch to the windshield wiper WASH position for greater than 10 seconds will default the washer system to OFF for that ignition cycle.
    • Key in ON position.
      • Fig 5: Measuring Voltage Between Washer Pump Motor C137-2, Circuit CRW14 (BU/WH) & Ground
      GF0031053Courtesy of FORD MOTOR CO.
    • Measure the voltage between washer pump motor C137-2, circuit CRW14 (BU/WH) harness side and ground while depressing the multi-function switch to the windshield wiper WASH position.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  I9.
    2. NO  : Go to  I6.
  6. I6 CHECK CIRCUIT CRW14 (BU/WH) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C1552
      • Fig 6: Measuring Resistance Between Washer Pump Motor C137-2, Circuit CRW14 (BU/WH) & Ground
      GF0031049Courtesy of FORD MOTOR CO.
    • Measure the resistance between washer pump motor C137-2, circuit CRW14 (BU/WH), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  I7.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  7. I7 CHECK THE MULTI-FUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multi-function Switch C202
    • Carry out the multi-function switch component test.
    • Did the multi-function switch pass the component test? 
    1. YES  : Go to  I8.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES .
  8. I8 CHECK CIRCUIT CRW07 (GY/BN) FOR AN OPEN OR SHORT TO GROUND 
      Fig 7: Measuring Resistance Between Windshield Wiper Motor C1552-12, CRW07 (GY/BN) & Multi-Function Switch C202-10
      GF0021751Courtesy of FORD MOTOR CO.
    • Measure the resistance between windshield wiper motor C1552-12, circuit CRW07 (GY/BN), harness side and multi-function switch C202-10, circuit CRW07 (GY/BN), harness side; and between multi-function switch C202-10, circuit CRW07 (GY/BN), harness side and ground.
    • Is the resistance less than 5 ohms between multi-function switch and wiper motor; and greater than 10,000 ohms between multi-function switch and ground? 
    1. YES  : Go to  I13.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  9. I9 CHECK CIRCUIT CRW23 (VT/GN) FOR VOLTAGE 
      Fig 8: Measuring Voltage Between Washer Pump Motor C137-1, Circuit CRW23 (VT/GN) & Ground
      GF0031054Courtesy of FORD MOTOR CO.
    • Measure the voltage between washer pump motor C137-1, circuit CRW23 (VT/GN) harness side and ground while depressing the multi-function switch to the rear window wiper WASH position.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new washer pump. REFER to Washer Pump . TEST the system for normal operation.
    2. NO  : Go to  I10.
  10. I10 CHECK CIRCUIT CRW23 (VT/GN) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Rear Window Wiper Motor C4218
      • Fig 9: Measuring Resistance Between Washer Pump Motor C137-1, Circuit CRW23 (VT/GN) & Ground
      GF0031051Courtesy of FORD MOTOR CO.
    • Measure the resistance between washer pump motor C137-1, circuit CRW23 (VT/GN), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  I11.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  11. I11 CHECK THE MULTI-FUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multi-function Switch C202
    • Carry out the multi-function switch component test.
    • Did the multi-function switch pass the component test? 
    1. YES  : Go to  I12.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES .
  12. I12 CHECK CIRCUIT CRW20 (GY/YE) FOR AN OPEN OR SHORT TO GROUND 
      Fig 10: Measuring Resistance Between Windshield Wiper Motor C4218-4, CRW07 (GY/BN) & Multi-Function Switch C202-14
      GF0031055Courtesy of FORD MOTOR CO.
    • Measure the resistance between windshield wiper motor C4218-4, circuit CRW07 (GY/BN), harness side and multi-function switch C202-14, circuit CRW07 (GY/BN), harness side; and between multi-function switch C202-14, circuit CRW07 (GY/BN), harness side and ground.
    • Is the resistance less than 5 ohms between multi-function switch and wiper motor; and greater than 10,000 ohms between multi-function switch and ground? 
    1. YES  : Go to  I14.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  13. I13 CHECK THE WINDSHIELD WIPER MOTOR 
    • 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 - Windshield .
    2. NO  : The system is operating correctly at this time. Concern may have been caused by binding or incorrect pivot arm adjustment. REFER to Wiper Blade and Pivot Arm Adjustment - Windshield . TEST the system for normal operation.
  14. I14 CHECK THE REAR WINDOW WIPER MOTOR 
    • 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 rear window wiper motor. REFER to Wiper Motor - Rear Window .
    2. NO  : The system is operating correctly at this time. Concern may have been caused by binding or incorrect pivot arm adjustment. REFER to Wiper Blade and Pivot Arm Adjustment - Rear Window . TEST the system for normal operation.
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