Mandatory conditions for "training" the throttle actuator:
- there are no fault codes P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507.
- the engine speed is in the range of 450-4000 rpm.
- the air pressure in the intake manifold is higher than 5 kPa.
- air flow rate is higher than 2 grams/sec.
- ignition voltage "1" is greater than 10 volts.
Caution: Do not perform this procedure if any fault codes are set.
1. Run the engine at idle speed for three minutes (automatic transmission selector in position "P").
2. Using a scanner, determine the actual crankshaft speed.
3. The ECM will begin the process of learning the new throttle position, after which the engine speed will begin to decrease.
4. Turn off the ignition for 60 seconds.
5. Run the engine at idle speed for three minutes.
6. After three minutes, the idle speed will be normal.
Caution: During the "learn" process, the Malfunction Indicator Light (MIL) may illuminate and a trouble code may be stored. If this occurs, clear the codes to allow the process to continue. If the throttle actuator has not been learned, slow down to idle speed several times.
7. After the drive cycle, the engine should run at normal idle speed. If this does not happen, turn off the ignition for 60 seconds and repeat the operations in step 6.
8. At the end of the learning procedure, clear the fault codes.
The material was created based on information from the website: ChevyMan