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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Automatic Transmission - 6T40 - DTC P0601 To DTC P0971) >> Diagnostic Information and Procedures >> DTC P0601, P0603, P0604, or P062F: Control Module Random Access Memory >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
    CAUTION:

    Before programming a control module, the following must be observed, or control module damage may occur:

    • The TIS terminal, MDI, and/or scan tool must have the latest software.
    • The vehicle battery must be fully charged. The battery voltage should be between 1214 volts.
    • The TIS terminal, MDI, and/or scan tool connections must be secure.
    • A battery charger must NOT be connected to the battery when programming a control module.
  1. Ignition OFF and all vehicle systems OFF. It may take up to 2min for all vehicle systems to power down.
  2. Ignition ON.
  3. Verify that DTC P0601, P0603, P0604, or P062F is not set.
    • If any of the DTCs are set 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If none of the DTCs are set  
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  5. Verify the DTC does not set.
    • If the DTC sets 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If the DTC does not set 
  6. All OK.
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