Throttle Body Idle Air Flow Compensation Reset

Engine Controls and Fuel - 5.3L L84 or 6.2L L87 | Repair Instructions | Document ID: 5438988 Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis Description For an overview of the component/system, refer to: Throttle Actuator Control (TAC) System Description This procedure triggers the control module to learn the values of the component: Q38 Throttle Body — Airflow Adaptive Values When to Perform the Procedure

Note

Failure to perform this procedure may result in poor system performance, DTCs being set, or customer dissatisfaction. Perform this procedure when the following component has been serviced: Q38 Throttle Body — Cleaned / Replaced Conditions for Running the Procedure DTC P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201–P0208, P0220, P0222, P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P0300–P0308, P0351–P0358, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P0697, P06A3, P06D2, P1248, P1249, P124A, P124B, P1516, P16A0– P16A2, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, P216F, P217B, P217C, P217E, P217F, P2176, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, P2316, P2318, P2319, P2321, P2322 = Not set Ignition = On Vehicle Speed Sensor = 0 km/h (0 MPH) Reference Information Scan Tool Reference Control Module References 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. 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 10.1. Engine » Idling — For greater than 3 min 10.2. Ignition/Vehicle » Off — For greater than 1 min 10.3. Engine » Idling — For greater than 3 min 10.4. Repeat step 9 ⇒ { Test failed 2 time(s) } If not in the specified range 10.1. Perform the following action: Road test the vehicle. 10.2. Vehicle Speed — Greater than 70 km/h (44 MPH) 10.3. Decelerate — For 2 s 10.4. Repeat step 10.2 — 3 times 10.5. Engine » Idling — For greater than 3 min 10.6. Repeat step 9 ⇒ { Test failed 3 time(s) } If not in the specified range Refer to: Diagnostic System Check - Vehicle ⇓ If in the specified range
11. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification