Ecm/Pcm Idle Learn Procedure - Honda Accord 2008 Manual

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07/11/02 09:17:49 61TA0000_110_0343

ECM/PCM Idle Learn Procedure

The idle learn procedure must be done so the ECM/PCM

can learn the engine idle characteristics.

Do the idle learn procedure whenever you do any of

these actions:

• Replace ECM/PCM.

• Reset ECM/PCM.

• Update ECM/PCM.

• Replace or clean the throttle body.

NOTE: Erasing DTCs with the HDS does not require you

to do the idle learn procedure.

1. Make sure all electrical items (A/C, audio, lights, etc.)

2. Reset the ECM/PCM with the HDS.

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

4. 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, or until the

engine coolant temperature reaches 194 °F (90 °C).

5. 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.

6. Verify on the HDS data list that the idle learn

procedure is complete.

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