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Symptom: P-1686 NO SKIM BUS MESSAGE RECEIVED When Monitored and Set Condition: P-1686 NO SKIM BUS MESSAGE RECEIVED When Monitored: With the ignition on. Set Condition: The PCM does not receive a CCD Bus message from the SKIM when expected. POSSIBLE CAUSES PCM INTERMITTENT CONDITION CCD BUS CIRCUIT(S) OPEN FROM PCM TO SKIM LOSS OF SKIM COMMUNICATION TEST ACTION APPLICABILITY 1 Turn the ignition on. t, read PCM DTCs. LOOK for P1686. Is the Starts Since Set counter for DTC P1686 displayed and equal to 0? All Yes → No → 2 Turn the ignition on. t, attempt to communicate with the SKIM. With the DRB III t, select Theft Alarm and read the SKIM DTCs. NOTE: This test will indicate if the Bus is operational from the DLC to the All Yes → No → Refer to the appropriate symptom in the COMMUNICATION 3 Turn the ignition off. All Yes → Replace and program the Powertrain Control Module in accor- No → Repair the CCD Bus circuit(s) for an open. 33 COMMUNICATION |