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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 508 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0420 To DTC P3449 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 (ECM) >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition ON, clear the DTC information with a scan tool. Observe the scan tool DTC information.
    • If DTC P0602 is set, reprogram the K20 ECM. Refer to Control Module References for K20 ECM replacement, setup, and programming. If DTC P0602 resets, replace the K20 ECM.
  2. Observe the DTC information with a scan tool. Verify that DTC P0601, P0603, P0604, P0605, P0606, P0607, P060D, P062F, or P2610 does not set.
    • If a DTC failed this ignition, replace the K20 ECM.
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