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Symptom List: ROLLING CODE FAILURE Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be ROLLING CODE FAILURE. When Monitored and Set Condition: ROLLING CODE FAILURE When Monitored: At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKIM or PCM reset. Set Condition: When a PCM STATUS message with a Valid Key status is not received by the SKIM within 3.5 seconds of transmitting the last Valid Key Code message to the PCM. VIN MISMATCH When Monitored: With the ignition on. Set Condition: When the VIN received from the PCM does not match the VIN stored in the SKIM’s EEPROM. POSSIBLE CAUSES VERIFYING PCM VIN REPLACE SKIM AND CHECK DTC’S INTERMITTENT WIRING HARNESS PROBLEM PCM TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → No → 253 VEHICLE THEFT/SECURITY |