STOP AND START GENERAL GENERAL

  1. OUTLINE

    1. To achieve low emissions and enhanced fuel economy, the stop and start system has been developed.

    2. The stop and start system automatically stops the engine when the vehicle comes to a stop, such as when the vehicle stops at a red traffic light. When starting off, the engine is automatically restarted by simply depressing the clutch pedal, without requiring any extra activity from the driver.

      W100949E02

    3. The stop and start system consists of an engine stop and start ECU with a built-in backup boost converter, and an starter assembly.

    4. Based on signals from various sensors, switches, and the ECM, the engine stop and start ECU controls the stopping and starting of the engine.

    5. When the engine is stopped, the ECM stores the crankshaft angle. This is used to determine which cylinder to inject fuel into and ignite the next time the engine is restarted. This shortens the amount of the time necessary to restart the engine.

    6. To allow management of the lifespan of the starter assembly, the engine stop and start ECU counts the number of times the starter operates. If the number exceeds a threshold, the ECU blinks the stop and start cancel indicator light to inform the driver to inform the driver that a replacement is required.

      Tip:

      After the starter assembly has been replaced, it is necessary to clear the record of the number of times that the starter assembly has been operated. For details, refer to the Repair Manual.

      W117277E01

  2. PRECAUTION

    1. Ignition Switch Expressions

      1. The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.

        Expression

        Ignition Switch

        (Position)

        Engine Switch

        (Condition)

        Ignition Switch off

        LOCK

        Off (Lock)

        Ignition Switch ACC

        ACC

        On (ACC)

        Ignition Switch ON

        ON

        On (IG)

        Engine Start

        START

        On (Start)

    2. Ecorun Cancel Switch Expressions

      1. The type of ecorun cancel switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.

        Vehicle Specification

        Part Name in Manual

        Actual Part Name

        Models with Pre-crash Safety System

        Ecorun Cancel Switch

        Combination Switch Assembly

        Models without Pre-crash Safety System

        Ecorun Cancel Switch

        Ecorun Cancel Switch Assembly