Pinpoint Test

1. Ignition OFF.
2. Disconnect: LTM C4174B.
3. Disconnect: Power Liftgate Chime.
4. Ignition ON.
5. Measure:

   Power Liftgate Chime			Ground
   C4186			Ground
   Pin	Circuit	Measurement / Action	Pin	Circuit
   1	RPR56 (GY/VT)		-	Ground
   2	CPR56 (VT/BN)		-	Ground

Is any voltage present? 

1. Yes: REPAIR the circuit in question.
2. No: GO to 2  .

1. Ignition OFF.
2. Measure:

   Power Liftgate Chime			Ground
   C4186			Ground
   Pin	Circuit	Measurement / Action	Pin	Circuit
   1	RPR56 (GY/VT)		-	Ground
   2	CPR56 (VT/BN)		-	Ground

Are the resistances greater than 10, 000 ohms? 

1. Yes: GO to 3  .
2. No: REPAIR the circuit in question.

1. Measure:

   LTM			Power Liftgate Chime
   C4174B			C4186
   Pin	Circuit	Measurement / Action	Pin	Circuit
   9	RPR56 (GY/VT)		1	RPR56 (GY/VT)
   22	CPR56 (VT/BN)		2	CPR56 (VT/BN)

Are the resistances less than 3 ohms? 

1. Yes: GO to 4  .
2. No: REPAIR the circuit in question.

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.