|
|
Symptom: P1686-NO SKIM BUS MESSAGE RECEIVED When Monitored and Set Condition: P1686-NO SKIM BUS MESSAGE RECEIVED When Monitored: With the ignition on. Set Condition: The PCM does not receive a Bus message from the SKIM when expected. POSSIBLE CAUSES SKIM/PCM INTERMITTENT CONDITION LOSS OF SKIM COMMUNICATION PCI BUS CIRCUIT OPEN FROM PCM TO SKIM TEST ACTION APPLICABILITY 1 Turn the ignition on. t, read the PCM DTCs. Look for P1686. Is the Starts Since Set counter on the DTC screen for P1686 equal to Zero? All Yes → No → 2 Turn the ignition on. t, attempt to communicate with the SKIM. NOTE: This test will indicate if the Bus is operational from the DLC to the t able to communicate with the SKIM? All Yes → No → Refer to symptom BUS +/- SIGNAL OPEN FROM SKIM in the 3 Turn the ignition off. All Yes → No → Repair the PCI Bus circuit between the PCM and the SKIM for an 36 COMMUNICATION |