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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 A: The Wipers are Inoperative >> Pinpoint Test A: The Wipers Are Inoperative

Pinpoint Test A: The Wipers Are 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. A1 RETRIEVE THE RECORDED SJB DTCs FROM THE WIPER CONTROL SELF-TEST 
    • Use the recorded SJB DTCs from the Wiper Control Self-Test.
    • Are any DTCs recorded? 
    1. YES  : For DTC B1432, go to  A7.
    2. NO  : Go to  A2.
  2. A2 CHECK THE MULTI-FUNCTION SWITCH INPUTS TO THE SJB - MONITOR SJB PIDS FRNWIPER_A, FRNWIPER_B, FRNWIPER_C AND FRNWIPER_H 
    • Enter the following diagnostic mode on the scan tool: SJB DataLogger.
    • Monitor the SJB PIDs FRNWIPER_A, FRNWIPER_B, FRNWIPER_C and FRNWIPER_H while turning the multi-function switch through all positions.
    • Refer to table.
      Multi- function Switch Position FRN- WIPER_A FRN- WIPER_B FRN- WIPER_C FRN- WIPER_H
      INT 1 Active Inactive Inactive Inactive
      INT 2 Active Active Inactive Inactive
      INT 3 Inactive Active Inactive Inactive
      INT 4 Inactive Active Active Inactive
      INT 5 Inactive Inactive Active Inactive
      LOW Active Inactive Active Inactive
      HIGH Inactive Inactive Inactive Active
    • Do the PID values agree with the multi-function switch positions? 
    1. YES  : Go to  A5.
    2. NO  : Go to  A3.
  3. A3 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  A4.
    2. NO  : INSTALL a new multi-function switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  4. A4 CHECK CIRCUIT GD116 (BK/VT) FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between multi-function switch C202-15, circuit GD116 (BK/VT), harness side and ground.
      • Fig 1: Checking Circuit GD116 (BK/VT) For Open
      GF0028478Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A5.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  5. A5 CHECK THE WINDSHIELD WIPER MOTOR CIRCUIT GD121 (BK/YE) FOR AN OPEN 
    • Disconnect: Windshield Wiper Motor C125
    • Measure the resistance between windshield wiper motor C125-4, circuit GD121 (BK/YE), harness side and ground.
      • Fig 2: Checking Windshield Wiper Motor Circuit GD121 (BK/YE) For Open
      GF0028479Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A6.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. A6 CHECK CIRCUIT CRW16 (GY/BN) FOR VOLTAGE 
    • Key in ON position.
    • Place the multi-function switch into the low speed position.
    • Measure the voltage between windshield wiper motor C125-5, circuit CRW16 (GY/BN), harness side and ground.
      • Fig 3: Checking Circuit CRW16 (GY/BN) For Voltage
      GF0028480Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new windshield wiper motor. REFER to WIPER MOTOR .
    2. NO  : Go to  A7.
  7. A7 CHECK THE WIPER RUN/PARK RELAY 
    • Disconnect: Windshield Wiper RUN/PARK Relay
    • Carry out the Run/Park Relay Component Test. Refer to COMPONENT TESTING .
    • Did the RUN/PARK relay pass the component test? 
    1. YES  : Go to  A8.
    2. NO  : INSTALL a new RUN/PARK relay. TEST the system for normal operation.
  8. A8 CHECK CIRCUIT SBB09 (RD) FOR AN OPEN 
    • Measure the voltage between windshield wiper RUN/PARK relay pin 87, circuit SBB09 (RD), harness side and ground.
      • Fig 4: Checking Circuit SBB09 (RD) For Open - MKZ
      GF0028482Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A9.
    2. NO  : VERIFY the battery junction box (BJB) fuse 9 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the appropriate Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation.
  9. A9 CHECK CIRCUIT CBP23 (BN/YE) FOR VOLTAGE 
    • Measure the voltage between windshield wiper RUN/PARK relay pin 86, circuit CBP23 (BN/YE), harness side and ground.
      • Fig 5: Checking Circuit CBP23 (BN/YE) For Voltage - MKZ
      GF0028484Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A12.
    2. NO  : Go to  A10.
  10. A10 CHECK CIRCUIT CBP23 (BN/YE) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280a
    • Measure the resistance between windshield wiper RUN/PARK relay pin 86, circuit CBP23 (BN/YE), harness side and SJB C2280a-24, circuit CBP23 (BN/YE), harness side.
      • Fig 6: Checking Circuit CBP23 (BN/YE) For Open - MKZ
      GF0028486Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A11.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  11. A11 CHECK CIRCUIT CDC33 (VT/GN) FOR VOLTAGE 
    • Disconnect: SJB C2280b
    • Key in ON position.
    • Measure the voltage between SJB C2280b-4, circuit CDC33 (VT/GN), harness side and ground.
      • Fig 7: Checking Circuit CDC33 (VT/GN) For Voltage
      GF0028487Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : VERIFY SJB fuse 23 (7.5A) is OK. If OK, go to  A14. If not OK, REFER to the appropriate Wiring Diagrams to identify the possible causes of the circuit short.
    2. NO  : DIAGNOSE the ignition switch circuit. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  12. A12 CHECK CIRCUIT RRW24 (GN/VT) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280a
    • Measure the resistance between windshield wiper RUN/PARK relay pin 85, circuit RRW24 (VT/GN), harness side and SJB C2280a-14, circuit RRW24 (VT/GN), harness side.
      • Fig 8: Checking Circuit RRW24 (GN/VT) For Open - MKZ
      GF0028489Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A13.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  13. A13 CHECK CIRCUIT CRW03 (VT/WH) FOR AN OPEN 
    • Measure the resistance between windshield wiper RUN/PARK relay pin 30, circuit CRW03 (VT/WH), harness side and SJB C2280a-1, CRW03 (VT/WH), harness side.
      • Fig 9: Checking Circuit CRW03 (VT/WH) For Open - MKZ
      GF0028491Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A14.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  14. A14 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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