PCM Status Failure

PCM STATUS FAILURE

WHEN MONITORED
With the ignition on.

SET CONDITION
This DTC exists when a PCM STATUS message was not received from the PCM for at least 20.0 consecutive seconds.

POSSIBLE CAUSES
- Wire harness failure
- SKIM
- PCM

Diagnostic Test

1. ACTIVE DTC

NOTE: make sure the PCM has proper power and ground connections before continuing.

With the scan tool, read and record the SKIM DTCs then erase the SKIM DTCs.
Turn the ignition off.
Wait 2 minutes.
Turn the ignition on.
With the scan tool, read the SKIM DTCs.

Q: Is the DTC active at this time?

YES: Go To 2
NO: Refer to the INTERMITTENT CONDITION Diagnostic Procedure.

2. INTERMITTENT WIRING PROBLEM
Turn the ignition off.

NOTE:
- Visually inspect the related wiring harness and PCI Bus circuits. Look for any chafed, pierced, pinched, or partially broken wires.
- Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

NOTE: Refer to any Technical Service Bulletins (TSB) that may apply.

Q: Were any problems found?

YES: Repair as necessary. Perform SKIS VERIFICATION. SKIS Verification
NO: Go To 3

3. SKIM/PCM

NOTE: Before proceeding it will be necessary to obtain the SKIM PIN.

Turn the ignition on.
With the scan tool, display and erase all PCM and SKIM DTC's.
Perform 5 ignition key cycles, leaving the ignition key on for a minimum of 90 seconds per cycle.
With the scan tool, read the SKIM DTCs.

Q: Does the code appear?

YES: Replace and program the Powertrain Control Module. Perform SKIS VERIFICATION. SKIS Verification
NO: Test complete, the conditions that set this DTC are not present at this time.