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Pinpoint Test

  1. CHECK THE MANUAL OPERATION OF THE LIFTGATE
    1. While manually opening and closing the liftgate, check the liftgate for:
      • liftgate/wedge alignment
      • strut operation (struts should push liftgate open when beyond half open)
      • hinges (should move freely)

    Does the liftgate open and close correctly? 

    1. Yes: GO to 2  .
    2. No: REPAIR and ALIGN as necessary. REFER to Liftgate Alignment .
  2. CHECK THE LIFTGATE LEFT/RIGHT PINCH STRIP STATUS (LFT_PINCH / RT_PINCH) OPERATION
    1. Using the scan tool, view the LTM PIDs  .
    2. Monitor the LTM PIDs  LFT_PINCH and RT_PINCH while activating the left and right pinch strips.

    Do the PIDs states change/agree with the pinch strip status? 

    1. Yes: GO to  10.
    2. No: GO to 3  .
  3. CHECK THE PINCH STRIP SIGNAL CIRCUIT
    1. Disconnect: Inoperative Pinch Strip.
    2. For an inoperative left pinch strip, measure:
      Left Pinch Strip Ground
      G08037982
      G08037983
      C4172 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR52 (YE/VT)
      G08037984
      		 - Ground
    3. For an inoperative right pinch strip, measure
      Right Pinch Strip Ground
      G08037985
      G08037986
      C4173 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR51 (YE/OG)
      G08037987
      		 - Ground

    Is the voltage approximately 5 volts? 

    1. Yes: GO to  7.
    2. No: If the voltage measured was greater than 5 volts, GO to 4  .

      If the voltage measured was less than 5 volts, GO to  5.

  4. CHECK THE PINCH STRIP SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
    1. Ignition OFF.
    2. Disconnect: LTM C4174B.
    3. Ignition ON.
    4. For an inoperative left pinch strip, measure:
      Left Pinch Strip Ground
      G08037989
      G08037988
      C4172 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR52 (YE/VT)
      G08037990
      		 - Ground
    5. For an inoperative right pinch strip, measure:
      Right Pinch Strip Ground
      G08037991
      G08037992
      C4173 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR51 (YE/OG)
      G08037993
      		 - Ground

    Is any voltage present? 

    1. Yes: REPAIR the circuit in question.
    2. No: GO to 5  .
  5. CHECK THE PINCH STRIP SIGNAL CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Disconnect: LTM C4174B.
    3. For an inoperative left pinch strip, measure:
      Left Pinch Strip Ground
      G08037994
      G08037995
      C4172 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR52 (YE/VT)
      G08037996
      		 - Ground
    4. For an inoperative right pinch strip, measure:
      Right Pinch Strip Ground
      G08037997
      G08037998
      C4173 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR51 (YE/OG)
      G08037999
      		 - Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes: GO to 6  .
    2. No: REPAIR the circuit in question.
  6. CHECK THE PINCH STRIP SIGNAL CIRCUIT FOR AN OPEN
    1. For an inoperative left pinch strip, measure:
      Left Pinch Strip LTM
      G08038000
      G08038001
      C4172 C4174B
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR52 (YE/VT)
      G08038002
      		 12 CPR52 (YE/VT)
    2. For an inoperative right pinch strip, measure:
      Right Pinch Strip LTM
      G08038003
      G08038004
      C4173 C4174B
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR51 (YE/OG)
      G08038005
      		 14 CPR51 (YE/OG)

    Is the resistance less than 3 ohms? 

    1. Yes: GO to  11.
    2. No: REPAIR the circuit in question.
  7. CHECK THE PINCH STRIP RETURN CIRCUIT
    1. Ignition ON.
    2. For an inoperative left pinch strip, measure:
      Left Pinch Strip Left Pinch Strip
      G08038006
      G08038007
      C4172 C4172
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR52 (YE/VT)
      G08038008
      		 2 RPR52 (VT/GY)
    3. For an inoperative right pinch strip, measure:
      Right Pinch Strip Right Pinch Strip
      G08038009
      G08038010
      C4173 C4173
      Pin Circuit Measurement / Action Pin Circuit
      1 CPR51 (YE/OG)
      G08038011
      		 2 RPR52 (VT/GY)

    Is the voltage approximately 5 volts? 

    1. Yes: INSTALL a new pinch strip for the pinch strip in question. REFER to Pinch Strip Switch .
    2. No: GO to 8  .
  8. CHECK THE PINCH STRIP RETURN CIRCUIT FOR SHORT TO VOLTAGE
    1. Ignition OFF.
    2. Disconnect: LTM C4174B.
    3. Ignition ON.
    4. For an inoperative left pinch strip, measure:
      Left Pinch Strip Ground
      G08038012
      G08038013
      C4172 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 RPR52 (VT/GY)
      G08038014
      		 - Ground
    5. For an inoperative right pinch strip, measure:
      Right Pinch Strip Ground
      G08038015
      G08038016
      C4173 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 RPR52 (VT/GY)
      G08038017
      		 - Ground

    Is any voltage present? 

    1. Yes: REPAIR the circuit.
    2. No: GO to 9  .
  9. CHECK THE PINCH STRIP RETURN CIRCUIT FOR AN OPEN
    1. For an inoperative left pinch strip, measure:
      Left Pinch Strip LTM
      G08038018
      G08038019
      C4172 C4174B
      Pin Circuit Measurement / Action Pin Circuit
      2 RPR52 (VT/GY)
      G08038020
      		 21 RPR52 (VT/GY)
    2. For an inoperative right pinch strip, measure:
      Right Pinch Strip LTM
      G08038021
      G08038022
      C4173 C4174B
      Pin Circuit Measurement / Action Pin Circuit
      2 RPR52 (VT/GY)
      G08038023
      		 21 RPR52 (VT/GY)

    Is the resistance less than 3 ohms? 

    1. Yes: GO to  11.
    2. No: REPAIR the circuit.
  10. CHECK THE DETENT AND FORKBOLT SWITCH PIDs 
    1. Using the scan tool, view LTM PIDs  .
    2. Operate the liftgate manually while monitoring the LTM PIDs  :
      • Detent Switch Status (DETENTSW)
      • Forkbolt Switch Status (FORKBLT_S)
      • Forkbolt Secondary Switch (FKSWSEC)
    3. NOTE: The liftgate is in the primary position when the liftgate is in the full closed position. The liftgate is in the unlatch position when the liftgate is open and completely out of the striker.
      NOTE: If detent switch is active in the fully unlatched position, manually attempt to rotate the forkbolt towards the latched position.

      Begin with the liftgate in the open position, then slowly close the liftgate into each of the latch positions specified.

      Liftgate Latch Position DETENTSW FORKBLT_S FKSWSEC
      Fully unlatched Inactive Active Active
      Primary Active Inactive Inactive

    Do the switch states agree with the table? 

    1. Yes: GO to 11  .
    2. No: REFER to Diagnostic Routine L: B2908 .
  11. 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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