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When the engine-ECU is replaced, or when the learning value is initialised, the idling is not stabilized because the learning value in MPI engine is not completed. In this case, carry out the learning method for the idling through the following procedures.
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1.Start the engine and carry out the warm-up for the engine coolant temperature to reach 80°C or more. When the engine coolant temperature is 80°C or more, the warm-up is not needed if the ignition switch is in "ON" position <except vehicles with KOS> (or put the power supply mode is OFF <vehicles with KOS>) once.
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2.Place the ignition switch in the "LOCK" (OFF) position <except vehicles with KOS> (or put the power supply mode is OFF <vehicles with KOS>) and stop the engine.
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3.After 10 seconds or more, start the engine again.
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4.For 10 minutes, carry out the idling under the condition shown below and then confirm the engine has the normal idling.
- Transmission: Neutral
- Operation in lamps, fan and attachments: Not to be operated
- Engine coolant temperature: 80°C or more
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When the engine stalls during the idling, check the dirtiness (on the throttle valve) of the throttle body and then perform the service from Procedure 1 again.
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Disconnecting and reconnecting the battery cables causes the throttle valve closed-position value learned to be erased from the memory. This may prevent the idle speed control from being executed properly. When the battery cables have been disconnected and reconnected, initialise the throttle valve control servo in the following manner.
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1.Turn the ignition switch to the "ON" position <except vehicles with KOS> (or put the power supply mode is ON <vehicles with KOS>) and then to the "LOCK" (OFF) position <except vehicles with KOS> (or put the power supply mode is OFF <vehicles with KOS>).
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2.Keep the ignition switch in the "LOCK" (OFF) position <except vehicles with KOS> (or put the power supply mode is OFF <vehicles with KOS>) for at least 10 seconds.
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