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Symptom List: PCM STATUS FAILURE Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be PCM STATUS FAILURE. When Monitored and Set Condition: 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. SERIAL LINK EXTERNAL FAULT When Monitored: At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKIM reset, or during SECRET KEY transfers to the PCM. Set Condition: When the SKIM does not receive an expected PCI BUS message trans- mission acknowledgement from the PCM after 3 transmit attempts. POSSIBLE CAUSES INTERMITTENT WIRING HARNESS PROBLEM WIRING HARNESS INSPECTION SKIM/PCM TEST ACTION APPLICABILITY 1 NOTE: Ensure the PCM has proper power and ground connections before All Yes → No → 236 VEHICLE THEFT/SECURITY |