For a complete wiring diagram Refer to Section 8WWhen Monitored:With the ignition on.Set Condition:The engine oil change counter indicates that the engine is overdue for an oil change. The DPF regeneration is disabled to prevent further oil delusion.Possible CausesENGINE OIL CHANGE COUNTER LEVEL TOO HIGHAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)1. DTC IS ACTIVETurn the ignition off.Refer to the Service Information and change the engine oil.With the scan tool, reset the engine oil change counter.View repair.Test CompletePerform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)