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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (Engine Controls And Fuel - 2.0L - DTC P0243 To DTC P0690) >> DTC P0601-P0604, P0606, P064D, P167D, or P2610 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Test the voltage and ground inputs to the K20 ECM for the following:
    • A short
    • An open
    • High resistance
  2. Observe the DTCs with the scan tool.
    • If DTC P0602 is set, attempt to program the K20 ECM before replacing the K20 ECM. Refer to Control Module References for K20 ECM replacement, setup, and programming.
    • If DTC P0602 resets, replace the K20 ECM.
  3. Observe the DTC information with a scan tool. DTC P0601, P0603, P0604, P0606, P064D, or P2610 should not set.
    • If a DTC failed this ignition, replace the K20 ECM.
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