Circuit/System Verification

Engine idling at the normal operating temperature. Verify there is no abnormal engine noise.
- If there is an abnormal engine noise, refer to Symptoms - Engine Mechanical .
Verify that no other DTCs are not set.
- If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Observe the Misfire Current Counters with a scan tool. The Misfire Current Counters should not be incrementing.
If the vehicle passes the Circuit/System Verification test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.