Pinpoint Test

1. Ignition OFF.
2. Disconnect: TCM.
3. Ignition ON.
4. Measure:

   TCM			Ground
   C1750			Ground
   Pin	Circuit	Measurement	Pin	Circuit
   1	SBB56 (VT/RD)		-	Ground
   31	SBB56 (VT/RD)		-	Ground
   33	CBB90 (YE/OG)		-	Ground

Is the voltage greater than 11 volts? 

1. Yes: GO to 2  .
2. No: VERIFY the BCM fuse 56 (15A) and 90 (10A) are OK. If OK, REPAIR the circuit. 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:

   TCM			Ground
   C1750			Ground
   Pin	Circuit	Measurement	Pin	Circuit
   9	GD120 (BK/GN)		-	Ground
   39	GD120 (BK/GN)		-	Ground
   41	GD120 (BK/GN)		-	Ground

Is the resistance less than 3 ohms? 

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

1. Measure:

   TCM			DLC
   C1750			C251
   Pin	Circuit	Measurement	Pin	Circuit
   47	VDB04 (WH/BU)		6	VDB04 (WH/BU)
   48	VDB05 (WH)		14	VDB05 (WH)

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 TCM connector.
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 TCM connector. Make sure it seats and latches correctly.
5. Operate the system and determine the concern is still present.

Is the concern still present? 

1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new TCM. REFER to TRANSMISSION CONTROL MODULE (TCM) .
2. No: The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.