PCM Idle Learn Procedure: Procedure

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.

Fig 1: Identifying Data Link Connector (DLC)

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1. Reset the 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.

Start the engine. Hold the engine speed at 3, 00 rpm without load in P or N until the radiator fan comes on, then let it idle.

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.
2. After learning, turn the ignition switch to LOCK (0).

Fig 2: PCM Power And Ground Circuit Troubleshooting Flow Chart (1 Of 3)

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Fig 3: PCM Power And Ground Circuit Troubleshooting Flow Chart (2 Of 3)

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Fig 4: PCM Power And Ground Circuit Troubleshooting Flow Chart (3 Of 3)

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