Pinpoint Test

1. Using a scan tool, perform a network test.

Is the text "pass" or a DTC listed next to any of the following modules (if equipped): APIM, ATCM, ABS module, BCM, C-CM, FLM, HUD module, IPC, OCSM, PAM, PSCM, PCM, RCM or SCCM? 

1. Yes: If "pass" or a DTC was listed next to the PCM, a network fault is not currently present. REFER to Diagnostic Routine AD: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding  to diagnose an intermittent HS-CAN  fault condition.

   If "pass" or a DTC was listed next to one or more modules other than the PCM, GO to 2  .

2. No: No modules are currently communicating on the HS-CAN  . REFER to Diagnostic Routine AD: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding .

1. Verify that pinpoint test QA has been carried out.

Has pinpoint test QA been carried out? 

1. Yes: GO to 3  .
2. No: REFER to SECTION 5: PINPOINT TESTS QA to diagnose no communication with the PCM.

1. Ignition OFF.
2. Measure:

   DLC			DLC
   C251			C251
   Pin	Circuit	Measurement	Pin	Circuit
   6	VDB04 (WH/BU)		14	VDB05 (WH)

Is the resistance between 54 and 66 ohms? 

1. Yes: CONNECT the negative battery cable. GO to  6  .
2. No: GO to 4  .

1. Disconnect: PCM C175B (3.5L), or C1381B (2.0L).
2. 3.5L engine, measure:

   PCM			DLC
   C175B			C251
   Pin	Circuit	Measurement	Pin	Circuit
   59	VDB04 (WH/BU)		6	VDB04 (WH/BU)
   58	VDB05 (WH)		14	VDB05 (WH)

3. 2.0L engine, measure:

   PCM			DLC
   C1381B			C251
   Pin	Circuit	Measurement	Pin	Circuit
   54	VDB04 (WH/BU)		6	VDB04 (WH/BU)
   41	VDB05 (WH)		14	VDB05 (WH)

Are the resistances less than 3 ohms? 

1. Yes: GO to 5  .
2. No: REPAIR the circuit in question. CONNECT the negative battery cable.

1. Disconnect: BCM C2280F.
2. Measure:

   DLC			DLC
   C251			C251
   Pin	Circuit	Measurement	Pin	Circuit
   6	VDB04 (WH/BU)		14	VDB05 (WH)

Is the resistance less that 10, 000 ohms? 

1. Yes: REPAIR the circuits in question.
2. No: GO to 6  .

1. Ignition OFF.
2. Disconnect and inspect the PCM 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 PCM 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 PCM:

   REFER to POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI , or

   REFER to POWERTRAIN CONTROL MODULE (PCM) - 3.5L TI-VCT .

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.