Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2012 >> IS F >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission (Diagnostic Codes & Circuit Tests) >> Automatic Transmission System >> Circuit Tests >> Kick Down Switch Circuit >> Procedure

Kick Down Switch Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (KICK DOWN SWITCH - BODY GROUND) 
    1. Disconnect the kick-down switch connector.
    2. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying A61 Kick Down Switch Connector
      GTY113552Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      A61-1 - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  2. INSPECT KICK DOWN SWITCH ASSEMBLY 
    1. Measure resistance according to the value(s) in the table below when kick-down switch is ON and OFF.
      Fig 2: Inspecting Kick Down Switch Assembly
      GTY113553Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 Press continuously
      (Kick-down switch is ON)
      Below 25 Ω
      Release
      (Kick-down switch is OFF)
      10 kΩ or higher

    NG → REPLACE KICK DOWN SWITCH ASSEMBLY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (KICK DOWN SWITCH - ECM) 
    1. Connect the kick-down switch connector.
      Fig 3: Identifying ECM Connector
      GTY112555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 Condition Specified Condition
      A5-14 (KD) - Body ground Fully depressed
      (Kick-down switch is ON)
      Below 25 Ω
      Release
      (Kick-down switch is OFF)
      10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE