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Pinpoint Test

  1. CHECK FOR Diagnostic Trouble Codes (DTCs) FROM THE Driver Seat Module (DSM)
    1. Ignition ON.
    2. Using a scan tool, perform Driver Seat Module (DSM) self-test.
      • Are any Diagnostic Trouble Codes (DTCs) retrieved? 
      • Yes:  If Diagnostic Trouble Code (DTC) B112B is present, GO to step  4 .

        For all other Driver Seat Module (DSM) Diagnostic Trouble Codes (DTCs), REFER to DTC CHART: DRIVER SEAT MODULE (DSM) .

      • No:  GO to step 2 .
  2. CHECK THE OPERATION OF THE POWER FOLDING MIRRORS
    1. Position the exterior mirror control switch to the center position.
    2. Press the exterior mirror control switch rearward towards the FOLD/UNFOLD position to activate the power folding mirrors.
      • Does either the Left Hand (LH) or Right Hand (RH) power folding mirror operate? 
      • Yes:  GO to step  10 .
      • No:  GO to step 3 .
  3. CHECK THE EXTERIOR MIRROR CONTROL SWITCH
    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: Driver Seat Module (DSM) C341C.
    3. Ignition ON.
    4. While pressing and releasing the power folding mirror button, monitor:
      Fig 1: Checking Exterior Mirror Control Switch
      G07427963Courtesy of FORD MOTOR CO.
      • Did the test light illuminate when the button is pressed and not illuminate when the button is released? 
      • Yes:  GO to step  7 .
      • No:  If the test light was always illuminated, GO to step 4 .

        If the test light was never illuminated, GO to step  5 .

  4. CHECK THE FOLDING MOTOR CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
    1. Ignition OFF.
    2. Disconnect: Driver Seat Module (DSM) C341C.
    3. Ignition ON.
    4. Measure:
      Fig 2: Driver Seat Module Connector Reference Chart
      G07427964Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      • Yes:  GO to step  12 .
      • No:  GO to step  13 .
  5. CHECK THE FOLDING MOTOR CONTROL CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Disconnect: Master Window Control Switch.
    3. Measure:
      Fig 3: Driver Seat Module Connector Reference Chart
      G07427965Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
  6. CHECK THE FOLDING MOTOR CONTROL CIRCUIT FOR AN OPEN
    1. Measure:
      Fig 4: Driver Seat Module Connector And Exterior Mirror Control Switch Connector Reference Chart
      G07427966Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms? 
  7. CHECK THE FOLDING MIRROR OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE
    1. Ignition OFF.
    2. Disconnect: Left Hand (LH) and Right Hand (RH) Exterior Mirror.
    3. Ignition ON.
    4. Measure:
      Fig 5: Driver Seat Module Connector Reference Chart
      G07427967Courtesy of FORD MOTOR CO.
      • Are any voltages present? 
  8. CHECK THE FOLDING MIRROR OUTPUT CIRCUITS FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 6: Driver Seat Module Connector Reference Chart
      G07427968Courtesy of FORD MOTOR CO.
      • Are the resistances greater than 10,000 ohms? 
  9. CHECK THE FOLDING MIRROR OUTPUT CIRCUITS FOR AN OPEN
    1. For incorrectly folding Left Hand (LH) mirror, measure:
      Fig 7: Driver Seat Module Connector And Left Hand (LH) Exterior Mirror Connector Reference Chart
      G07427969Courtesy of FORD MOTOR CO.
    2. For incorrectly folding Right Hand (RH) mirror, measure:
      Fig 8: Driver Seat Module Connector And Right Hand (RH) Exterior Mirror Connector Reference Chart
      G07427970Courtesy of FORD MOTOR CO.
      • Are the resistances less than 3 ohms? 
  10. 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: Incorrectly folding Right Hand (RH) or Left Hand (LH) Exterior Mirror.
    3. Ignition ON.
    4. For incorrectly folding Left Hand (LH) mirror, while pressing and releasing the power folding mirror button, monitor:
      Fig 9: Checking Left Hand Exterior Mirror
      G07427971Courtesy of FORD MOTOR CO.
    5. For incorrectly folding Right Hand (RH) mirror, while pressing and releasing the power folding mirror button, monitor:
      Fig 10: Checking Right Hand Exterior Mirror
      G07427972Courtesy of FORD MOTOR CO.
      • Did the test light illuminate when the button is pressed? 
      • Yes:  CHECK the exterior mirror jumper harness between the vehicle harness and the exterior mirror glass 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 . SYNCHRONIZE the power folding mirrors. REFER to MIRROR SYNCHRONIZATION - EXTERIOR, POWER FOLDING .
      • No:  GO to step 11 .
  11. CHECK THE POWER FOLD EXTERIOR MIRROR CIRCUITS FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: Driver Seat Module (DSM) C341C.
    3. For incorrectly folding Left Hand (LH) mirror, measure:
      Fig 11: Driver Seat Module Connector And Left Hand (LH) Exterior Mirror Connector Reference Chart
      G07427973Courtesy of FORD MOTOR CO.
    4. For incorrectly folding Right Hand (RH) mirror, measure:
      Fig 12: Driver Seat Module Connector And Right Hand (RH) Exterior Mirror Connector Reference Chart
      G07427974Courtesy of FORD MOTOR CO.
      • Are the resistances less than 3 ohms? 
  12. CHECK THE EXTERIOR MIRROR CONTROL SWITCH
    1. Ignition OFF.
    2. Disconnect: Master Window Control Switch.
    3. Ignition ON.
    4. Measure:
      Fig 13: Driver Seat Module Connector Reference Chart
      G07427975Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
  13. CHECK THE Driver Seat Module (DSM) FOR CORRECT OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect all Driver Seat Module (DSM) connectors.
    3. Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    4. Reconnect the Driver Seat Module (DSM) connectors and all previously disconnected exterior system connectors. Make sure they seat and latch correctly.
    5. Operate the system and determine if the concern is still present.
      • Is the concern still present? 
      • Yes:  CHECK On-Line Automotive Service Information System (OASIS) for any applicable Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, DISCONTINUE this test and FOLLOW Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Driver Seat Module (DSM). REFER to DRIVER SEAT MODULE (DSM) .
      • No:  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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