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.
1.Start the engine and carry out the warm-up for the engine coolant temperature to reach 80°C or more. 2.When the engine coolant temperature is 80°C or more, the warm-up is not needed if the ignition switch is in "ON" position once. 3.Place the ignition switch in "LOCK" (OFF) position and stop the engine. 4.After 10 seconds or more, start the engine again. 5.For 10 minutes, carry out the idling under the condition shown below and then confirm the engine has the normal idling.
Transmission: Neutral <M/T> or "P" range <A/T or CVT>
Operation in lamps, fan and attachments: Not to be operated
Engine coolant temperature: 80°C or more
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.
LEARNING PROCEDURE FOR THROTTLE VALVE CONTROL SERVO
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. 1.Turn the ignition switch to "ON" and then to "LOCK" (OFF) position. 2.Keep the ignition switch in "LOCK" (OFF) for at least 10 seconds.