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Pinpoint Test

  1. CHECK FOR VOLTAGE TO THE POSITION SENSOR
    1. Ignition OFF.
    2. Disconnect: Power Liftgate Motor.
    3. Ignition ON.
    4. Measure:
      Power Liftgate Motor Power Liftgate Motor
      G08038048
      G08038049
      C4223 C4223
      Pin Circuit Measurement / Action Pin Circuit
      2 CPR55 (GN/BU)
      G08038050
      		 3 RPR55 (WH/BU)

    Is the voltage approximately 5 volts? 

    1. Yes: GO to  5.
    2. No: GO to 2  .
  2. CHECK THE POSITION SENSOR VOLTAGE CIRCUIT
    1. Measure:
      Power Liftgate Motor Ground
      G08038051
      G08038052
      C4223 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 CPR55 (GN/BU)
      G08038053
      		 - Ground

    Is the voltage approximately 5 volts? 

    1. Yes: GO to  4.
    2. No: GO to 3  .
  3. CHECK THE POSITION SENSOR VOLTAGE CIRCUIT FOR AN OPEN OR SHORT TO GROUND
    1. Ignition OFF.
    2. Disconnect: LTM C4174B.
    3. Measure:
      LTM Power Liftgate Motor
      G08038054
      G08038055
      C4174B C4223
      Pin Circuit Measurement / Action Pin Circuit
      19 CPR55 (GN/BU)
      G08038056
      		 2 CPR55 (GN/BU)
      LTM Ground
      G08038057
      G08038058
      C4174B Ground
      Pin Circuit Measurement / Action Pin Circuit
      19 CPR55 (GN/BU)
      G08038059
      		 - Ground

    Is the resistance less than 3 ohms between LTM and power liftgate motor; and greater than 10, 000 ohms between LTM and ground? 

    1. Yes: GO to  9.
    2. No: REPAIR the circuit.
  4. CHECK THE POSITION SENSOR RETURN CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: LTM C4174B.
    3. Measure:
      LTM Power Liftgate Motor
      G08038060
      G08038061
      C4174B C4223
      Pin Circuit Measurement / Action Pin Circuit
      20 RPR55 (WH/BU)
      G08038062
      		 3 RPR55 (WH/BU)

    Is the resistance less than 3 ohms? 

    1. Yes: GO to  9.
    2. No: REPAIR the circuit.
  5. CHECK THE POSITION SENSOR CIRCUITS FOR REFERENCE VOLTAGE
    1. Ignition ON.
    2. Measure:
      Power Liftgate Motor Ground
      G08038063
      G08038064
      C4223 Ground
      Pin Circuit Measurement / Action Pin Circuit
      5 VPR53 (BU/WH)
      G08038065
      		 - Ground
      6 VPR54 (BU/BN)
      G08038066
      		 - Ground

    Are the voltages approximately 5 volts? 

    1. Yes: INSTALL a new power liftgate motor. REFER to Power Liftgate Motor .
    2. No: GO to 6  .
  6. CHECK THE POSITION SENSOR CIRCUITS FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: LTM C4174B.
    3. Measure:
      LTM Power Liftgate Motor
      G08038067
      G08038068
      C4174B C4223
      Pin Circuit Measurement / Action Pin Circuit
      7 VPR53 (BU/WH)
      G08038069
      		 5 VPR53 (BU/WH)
      8 VPR54 (BU/BN)
      G08038070
      		 6 VPR54 (BU/BN)

    Are the resistances less than 3 ohms? 

    1. Yes: GO to 7  .
    2. No: REPAIR the circuit in question.
  7. CHECK THE POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
    1. Ignition ON.
    2. Measure:
      Power Liftgate Motor Ground
      G08038071
      G08038072
      C4223 Ground
      Pin Circuit Measurement / Action Pin Circuit
      5 VPR53 (BU/WH)
      G08038073
      		 - Ground
      6 VPR54 (BU/BN)
      G08038074
      		 - Ground

    Is any voltage present? 

    1. Yes: REPAIR the circuit in question.
    2. No: GO to 8  .
  8. CHECK THE POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND
    1. Measure:
      Power Liftgate Motor Ground
      G08038075
      G08038076
      C4223 Ground
      Pin Circuit Measurement / Action Pin Ground
      5 VPR53 (BU/WH)
      G08038077
      		 - Ground
      6 VPR54 (BU/BN)
      G08038078
      		 - Ground

    Are the resistances greater than 10, 000 ohms? 

    1. Yes: GO to 9  .
    2. No: REPAIR the circuit in question.
  9. CHECK FOR CORRECT LTM OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect all LTM 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 all the LTM 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? 

    1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new LTM. REFER to Liftgate/Trunk Module (LTM) .
    2. 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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