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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0658 or P0659 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, verify with a scan tool the high side driver 1 parameter displays ON.
  2. Engine Running, gear selector lever in Park position. Verify with a scan tool the following test status parameters displays OK:
    • High Side Driver 1 Circuit High Voltage Test Status
    • High Side Driver 1 Circuit Open Test Status
    • High Side Driver 1 Circuit Low Voltage Test Status
  3. 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.
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