Pinpoint Test

1. Using a scan tool, perform the PCM KOEO self-test.

Are any charging system DTCs recorded? 

1. Yes: REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) .
2. No: GO to 2  .

1. Using a scan tool, perform the BCM self-test.

Are any charging system DTCs recorded? 

1. Yes: REFER to DTC CHART: BODY CONTROL MODULE (BCM) .
2. No: GO to 3  .

1. Check the charging system operation.

Does the charging system operate correctly? 

1. Yes: GO to 4  .
2. No: REFER to SYMPTOM CHART: CHARGING SYSTEM .

1. Using a scan tool, perform the IPC self-test.

Is DTC U0140:00 recorded? 

1. Yes: REFER to Diagnostic Routine AV: U0140:00 .
2. No: GO to 5  .

1. Ignition OFF.
2. Disconnect: PCM C175B (3.5L).
3. Disconnect: PCM C1381B (2.0L GTDI).
4. Ignition ON.
5. Observe the message center or integrated display area of the IPC with the PCM connected and disconnected.
   NOTE: If multiple warnings are present, the message center cycles through each of the warning indicators. Allow the message center to cycle through each display while determining whether the charging system message center warning indicator is active.

Do the powertrain malfunction (wrench) and engine over-temperature warning message center indicators remain off when the PCM is connected and become active with the PCM disconnected? 

1. Yes: If the charging system message center warning indicator is never on, the system is operating correctly at this time.

   If the charging system message center warning indicator is always on, 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: INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) .