AUTOMATIC TRANSMISSION SYSTEM 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

A01FEONE02

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01FEK9E12
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Kick Down Switch Assembly)

      Disconnect the kick-down switch connector.

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

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT KICK DOWN SWITCH ASSEMBLY


    1. A01FESZE02
      Text in Illustration
      *1 Kick Down Switch Assembly

      Remove the kick-down switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 - 1

      Continuously press

      (Kick-down switch is ON)

      		 Below 1 Ω
      2 - 1

      Released

      (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. A01FFASE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

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

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

      Fully depressed

      (Kick-down switch is ON)

      		 Below 1 Ω
      A19-14 (KD) - Body ground

      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