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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P182E or P1915: Internal Mode Switch >> Circuit/System Verification

Circuit/System Verification

  1. Verify the range selector lever cable is adjusted correctly. Refer to Range Selector Lever Cable Adjustment .
    • If cable adjustment is not correct 

      Repair as necessary.

    • If cable adjustment is correct 
  2. Ignition ON.
  3. Verify the scan tool transmission control module Internal Mode Switch A/B/C/P parameter matches the Transmission Internal Mode Switch Logic table for each gear shift lever position.
    • If the parameter does not match 

      Refer to Circuit/System Testing.

    • If the parameter matches 
  4. Verify the scan tool engine control module Park/Neutral Position Switch parameter displays Park/Neutral with the gear shift lever in Park or Neutral and In Gear when in Reverser or Drive.
    • If Park/Neutral or In Gear is not displayed 

      Refer to Circuit/System Testing.

    • If Park/Neutral and In Gear is displayed 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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