Circuit/System Testing

Ignition ON, clear the DTC information with a scan tool. Observe the scan tool DTC information. Verify that DTCs P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 do not fail this ignition cycle.

• If DTC P0602 failed this ignition, reprogram the K20 ECM. Refer to Control Module References for K20 ECM replacement, setup, and programming. If DTC P0602 resets, replace the K20 ECM.
• If DTC P0601, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 failed this ignition, replace the K20 ECM.