ECM/PCM Idle Learn Procedure

ECM Idle Learn Procedure

Procedure

1. HDS DLC - Connection





1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.

2. ECM/PCM - Reset

1. Reset the ECM/PCM with the HDS while the engine is stopped.

2. Turn the ignition switch to LOCK (0).

3. Turn the ignition switch to ON (II) and wait 30 seconds.

3. Warm Up The Engine

Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.

4. ECM/PCM - Idle Learn

1. Let the engine idle for about 5 minutes with the throttle fully closed.

NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.