AUTOMATIC TRANSMISSION SYSTEM Kick Down Switch Circuit

DESCRIPTION

The kick-down switch is turned ON when the accelerator pedal is fully depressed and a signal is sent to the ECM.

When the kick-down switch is turned ON, the ECM controls gear shifting according to the 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

A01FEFRE01

INSPECTION PROCEDURE

PROCEDURE


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


    1. Disconnect the kick-down switch connector.

    2. A01FDYHE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Kick Down Switch)

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

      Standard resistance
      Tester Connection Specified Condition
      A3-1 - Body ground Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT KICK DOWN SWITCH ASSEMBLY


    1. A01FH1FE10
      Text in Illustration
      *1

      Component without harness connected

      (Kick Down Switch)

      Measure resistance according to the value(s) in the table below when kick-down switch is ON and OFF.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2

      Press continuously

      (Kick-down switch is ON)

      		 Below 1 Ω
      ↑

      Release

      (Kick-down switch is OFF)

      		 10 kΩ or higher

    NG

    REPLACE KICK DOWN SWITCH ASSEMBLY Click here

    OK

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


    1. A01FFIOE03
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to ECM)

      Connect the kick-down switch connector.

    2. Disconnect the ECM connector.

    3. Measure resistance according to the value(s) in the table below when accelerator pedal is fully depressed or not.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A19-14 (KD) - Body ground

      Fully depressed

      (Kick-down switch is ON)

      		 Below 1 Ω
      ↑

      Release

      (Kick-down switch is OFF)

      		 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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