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Home >> Cadillac >> 2021 >> CT4 V, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L (L3B) - Repair Instructions - Ct4 (6 Of 6) >> Throttle Body Idle Air Flow Compensation Reset >> With Scan Tool

With Scan Tool

  1. Ignition - On / Vehicle - In Service Mode
  2. Select: Module Diagnostics
  3. Select: Engine Control Module
  4. Select: Configuration/Reset Functions
  5. Select: Reset Functions
  6. Select: Throttle Body Idle Air Flow Compensation Reset
  7. Follow the instructions on the scan tool.
  8. Verify the scan tool parameter: Throttle Body Idle Air Flow Compensation = 0% If greater than 0 Repeat step 1 If 0

    9. If greater than 0 

    Repeat step 1

    If 0 

  9. Engine - Idling - At normal operating temperature
  10. Verify the scan tool parameter: Engine Speed = -100 to +200 RPM of the Desired Idle Speed

      {Test failed 1 time(s)} If not in the specified range 

    1. Engine idling. - For greater than 3 min
    2. Ignition/Vehicle - Off - For greater than 1 min
    3. Engine idling. - For greater than 3 min
    4. Repeat step 9

      {Test failed 2 time(s)} If not in the specified range 

    1. Perform the following action: Road test the vehicle.
    2. Vehicle Speed - Greater than 70 km/h (44 MPH)
    3. Decelerate - For 2 s
    4. Repeat step 10.2 - 3 times
    5. Engine idling. - For greater than 3 min
    6. Repeat step 9

    {Test failed 3 time(s)} If not in the specified range 

    Refer to: DIAGNOSTIC SYSTEM CHECK - VEHICLE

    11. If in the specified range 

  11. All OK
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