AUTOMATIC TRANSMISSION SYSTEM(for 2GR-FSE) Kick Down Switch Circuit

DESCRIPTION

The kick-down switch turns ON when the accelerator pedal is fully depressed to send a signal to the ECM.

When the kick-down switch is ON, the ECM controls gear shifting according to programmed shift diagrams.

If a short circuit develops in the kick-down switch, the ECM disregards the kick-down signals and controls shifting at the normal shift points.

WIRING DIAGRAM

A01MYI5E05
*a Kick Down Switch
*b CAN Communication Line

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (KICK DOWN SWITCH - BODY GROUND)


    1. Disconnect the A57 kick-down switch connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A57-1 - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT KICK DOWN SWITCH ASSEMBLY


    1. Remove the kick-down switch assembly.

    2. A01MXS5C01
      *a

      Component without harness connected

      (Kick Down Switch)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2

      Continuously pressed

      (Kick-down switch is ON)

      		 Below 1 Ω

      Released

      (Kick-down switch is OFF)

      		 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE KICK DOWN SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (KICK DOWN SWITCH - ECM)


    1. A01MUD2C09
      *a

      Rear view of wire harness connector

      (to ECM)

      Install the kick-down switch.

    2. Disconnect the A76 ECM connector.

    3. Measure resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A76-14 (KD) - Body ground

      Fully depressed

      (Kick-down switch is ON)

      		 Below 1 Ω

      Released

      (Kick-down switch is OFF)

      		 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR