Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Engine idling at the normal operating temperature.
- If there is an abnormal engine noise, refer to SYMPTOMS - ENGINE MECHANICAL .
Verify that DTC P0011, P0014, P0021, P0024, P0087, P0088, P0089, P0201-P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P029D, P02A1, P02A5, P02A9, P02AD, P02B1, P0335, P0336, P0338, P0351-P0356, P069E, P2088, P2090, P2092, P2094, P2146, P2149, P2152, P2155, P216A, P216D, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 is not set.
- If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Observe the scan tool Misfire Current Cyl. 1-6 parameters. The Misfire Current Counters should not be incrementing.
Engine idling, perform the cylinder power balance test with a scan tool to isolate the misfiring cylinder. The engine speed should change when each injector is disabled.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.