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Pinpoint Test

  1. CHECK THE EXTERIOR MIRROR
    NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this section. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
    1. Ignition OFF.
    2. Disconnect: Inoperative Right Hand (RH) Exterior Mirror or Left Hand (LH) Exterior Mirror.
    3. Ignition ON.
    4. Select the inoperative mirror on the exterior mirror control switch.
    5. For inoperative Left Hand (LH) mirror, while holding the exterior mirror control switch in the up position, monitor:
      Fig 1: Left Hand (LH) Exterior Mirror Connector Reference Chart
      G07427893Courtesy of FORD MOTOR CO.
    6. For inoperative Right Hand (RH) mirror, while holding the exterior mirror control switch in the up position, monitor:
      Fig 2: Right Hand (RH) Exterior Mirror Connector Reference Chart
      G07427894Courtesy of FORD MOTOR CO.
      • Did the test light illuminate? 
      • Yes:  CHECK the inoperative exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to EXTERIOR MIRROR . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to EXTERIOR MIRROR MOTOR .
      • No:  For vehicles with base mirrors, GO to step 2 .

        For vehicles with heated mirrors, GO to step  3 .

  2. CHECK THE BASE EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: Exterior Mirror Control Switch C535A.
    3. For inoperative Left Hand (LH) mirror, measure:
      Fig 3: Left Hand (LH) Exterior Mirror Connector And Exterior Mirror Control Switch Connector Reference Chart
      G07427895Courtesy of FORD MOTOR CO.
    4. For inoperative Right Hand (RH) mirror, measure:
      Fig 4: Right Hand (RH) Exterior Mirror Connector And Exterior Mirror Control Switch Connector Reference Chart
      G07427896Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms? 
      • Yes:  INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to WINDOW CONTROL SWITCH .
      • No:  REPAIR the circuit.
  3. CHECK THE HEATED EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: Exterior Mirror Control Switch.
    3. Measure:
      Fig 5: Left Hand (LH) Exterior Mirror Connector And Exterior Mirror Control Switch Connector Reference Chart
      G07427897Courtesy of FORD MOTOR CO.
      Fig 6: Right Hand (RH) Exterior Mirror Connector And Exterior Mirror Control Switch Connector Reference Chart
      G07427898Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms? 
      • Yes:  INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to WINDOW CONTROL SWITCH .
      • No:  REPAIR the circuit.
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