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Pinpoint Test C: A Single Mirror Does Not Function With Switch Logic

  1. C1 CHECK THE EXTERIOR MIRROR FUNCTIONS WITH SWITCH LOGIC 
    • Key in ON position.
    • Press the exterior mirror control switch in all directions.
    • Does the exterior mirror operate with switch logic? 
      • Yes  : VERIFY the customer concern.
      • No  : Driver exterior mirror UP/DOWN inoperative, GO to  C2.

    Driver exterior mirror LEFT/RIGHT inoperative, GO to  C4.

    Passenger exterior mirror UP/DOWN inoperative, GO to  C6.

    Passenger exterior mirror LEFT/RIGHT inoperative, GO to  C8.

  2. C2 CHECK THE DRIVER EXTERIOR MIRROR UP/DOWN CIRCUIT 
    • Disconnect: Driver Exterior Mirror C522.
    • Key in ON position.
    • Press the exterior mirror control switch to select the driver exterior mirror.
    • While operating the exterior mirror control switch in the UP and DOWN position, measure the voltage between the driver exterior mirror C522 pin 2, circuit 34-AD7 (BU/RD), harness side and the driver exterior mirror C522 pin 1, circuit 32-AD6 (WH), harness side.
      Fig 1: Checking Driver Exterior Mirror Up/Down Circuit
      G03952688Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts when the exterior mirror control switch is moved to the UP position and is the polarity reversed when moved to the DOWN position? 
      • Yes  : INSTALL a new exterior mirror. REFER to EXTERIOR MIRROR . TEST the system for normal operation.
      • No  : GO to  C3.
  3. C3 CHECK CIRCUIT 34-AD7 (BU/RD) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Exterior Mirror Control Switch C527.
    • Measure the resistance between the exterior mirror control switch C527 pin 1, circuit 34-AD7 (BU/RD), harness side and the driver exterior mirror C522 pin 2, circuit 34-AD7 (BU/RD), harness side.
      Fig 2: Checking Circuit 34-AD7 (BU/RD) For An Open
      G03952689Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new exterior mirror control switch. TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  4. C4 CHECK THE DRIVER EXTERIOR MIRROR LEFT/RIGHT CIRCUIT 
    • Disconnect: Driver Exterior Mirror C522.
    • Key in ON position.
    • Press the exterior mirror control switch to select the driver exterior mirror.
    • While operating the exterior mirror control switch in the LEFT and RIGHT position, measure the voltage between the driver exterior mirror C522 pin 3, circuit 33-AD8 (YE/BU), harness side and the driver exterior mirror C522 pin 1, circuit 32-AD6 (WH), harness side.
      Fig 3: Checking Driver Exterior Mirror Left/Right Circuit
      G03952690Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts when the exterior mirror control switch is moved to the LEFT position and is the polarity reversed when moved to the RIGHT position? 
      • Yes  : INSTALL a new exterior mirror. REFER to EXTERIOR MIRROR . TEST the system for normal operation.
      • No  : GO to  C5.
  5. C5 CHECK CIRCUIT 33-AD8 (YE/BU) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Exterior Mirror Control Switch C527.
    • Measure the resistance between the exterior mirror control switch C527 pin 7, circuit 33-AD8 (YE/BU), harness side and the driver exterior mirror C522 pin 3, circuit 33-AD8 (YE/BU), harness side.
      Fig 4: Checking Circuit 33-AD8 (YE/BU) For An Open
      G03952691Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new exterior mirror control switch. TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  6. C6 CHECK THE PASSENGER MIRROR UP/DOWN CIRCUIT 
    • Disconnect: Passenger Exterior Mirror C622.
    • Key in ON position.
    • While operating the exterior mirror control switch in the UP and DOWN position, measure the voltage between the passenger exterior mirror C622 pin 2, circuit 34-AD10 (BU/YE), harness side and the passenger exterior mirror C622 pin 1, circuit 32-AD9 (WH/GN), harness side.
      Fig 5: Checking Passenger Mirror Up/Down Circuit
      G03952688Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts when the exterior mirror control switch is moved to the UP position and is the polarity reversed when moved to the DOWN position? 
      • Yes  : INSTALL a new exterior mirror. REFER to EXTERIOR MIRROR . TEST the system for normal operation.
      • No  : GO to  C7.
  7. C7 CHECK CIRCUIT 34-AD10 (BU/YE) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Exterior Mirror Control Switch C527.
    • Measure the resistance between the exterior mirror control switch C527 pin 2, circuit 34-AD10 (BU/YE), harness side and passenger exterior mirror C622 pin 2, circuit 34-AD10 (BU/YE), harness side.
      Fig 6: Checking Circuit 34-AD10 (BU/YE) For An Open
      G03952693Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new exterior mirror control switch. TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  8. C8 CHECK THE PASSENGER EXTERIOR MIRROR LEFT/RIGHT CIRCUIT 
    • Disconnect: Passenger Mirror C622.
    • Key in ON position.
    • While operating the exterior mirror control switch in the LEFT and RIGHT position, measure the voltage between the passenger exterior mirror C622 pin 3, circuit 33-AD11 (YE/VT), harness side and the passenger exterior mirror C622 pin 1, circuit 32-AD9 (WH/GN), harness side.
      Fig 7: Checking Passenger Exterior Mirror Left/Right Circuit
      G03952690Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts when the exterior mirror control switch is moved to the LEFT position and is the polarity reversed when moved to the RIGHT position. 
      • Yes  : INSTALL a new exterior mirror. REFER to EXTERIOR MIRROR . TEST the system for normal operation.
      • No  : GO to  C9.
  9. C9 CHECK CIRCUIT 33-AD11 (YE/VT) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Exterior Mirror Control Switch C527.
    • Measure the resistance between the exterior mirror control switch C527 pin 5, circuit 33-AD11 (YE/VT), harness side and the passenger exterior mirror C622 pin 3, circuit 33-AD11 (YE/VT), harness side.
      Fig 8: Checking Circuit 33-AD11 (YE/VT) For An Open
      G03952695Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new exterior mirror control switch. TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
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