Pinpoint Test

1. Ignition OFF.
2. Disconnect: LTM C4174A.
3. Ignition ON.
4. Measure:

   LTM			Ground
   C4174A			Ground
   Pin	Circuit	Measurement	Pin	Circuit
   4	SBB07 (WH/RD)		-	-
   9	SBP09 (RD)		-	-

Are the voltages greater than 11 volts? 

1. Yes: GO to 2  .
2. No: VERIFY the BJB fuse 7 (30A) and the BCM fuse 9 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the appropriate wiring diagrams to identify the possible causes of the circuit short. REFER to OEM FUSE AND RELAY INFORMATION and OEM WIRING DIAGRAMS .

1. Ignition OFF.
2. Measure:

   LTM			Ground
   C4174A			Ground
   Pin	Circuit	Measurement	Pin	Circuit
   1	GD349 (BK/GY)		-	-

Is the resistance less than 3 ohms? 

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

1. Disconnect: LTM C4174B.
2. Measure:

   LTM			DLC
   C4174B			C251
   Pin	Circuit	Measurement	Pin	Circuit
   24	VDB06 (GY/OG)		3	VDB06 (GY/OG)
   23	VDB07 (VT/OG)		11	VDB07 (VT/OG)

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 the LTM connectors.
3. Repair:
   • corrosion (replace connector or terminals - clean module pins)
   • damaged or bent pins - replace terminals/pins
   • pushed-out pins - replace pins as necessary
4. Reconnect the LTM connectors. Make sure they seat and latch correctly.
5. Operate the system and verify 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. Concern may have been caused by a loose or corroded connector.