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Home >> Lexus >> 2008 >> IS 250 AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (A960E Automatic Transaxle) >> Automatic Transmission System >> Shift Paddle Switch Circuit >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - BODY GROUND) 
    1. Disconnect the steering pad switch connector and spiral cable connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Tester Connection Specified Condition
    2 - Body ground Below 1 Ω
    Fig 1: Identifying J24 Steering Pad Switch Connector
    G05318133Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    J24-2 - k1-6 Always Below 1 Ω
    J24-9 - k1-2 Always Below 1 Ω
    J24-10 - k1-3 Always Below 1 Ω
    Fig 2: Identifying K1 Steering Pad Switch Connector
    G05318134Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY 

    OK: Go to Next Step 

  3. INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY 
    1. Disconnect the switch wire connector from the transmission shift switch.
    2. Measure the resistance between each terminal when the paddle shift is moved to each position.

      Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Paddle Shift Position Tester Connection Specified Condition
    Pull continuously "+" (Up shift) SFTU - ECC Below 1 Ω
    Release "+" (Up shift) ↑ 10 kΩ or higher
    Pull continuously "-" (Down shift) SFTD - ECC Below 1 Ω
    Release "-" (Down shift) ↑ 10 kΩ or higher
    Fig 3: Identifying Terminal Of Switch Wire Connector Connector
    G05318135Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE TRANSMISSION SHIFT SWITCH ASSEMBLY 

    OK: Go to Next Step 

  4. INSPECT SWITCH NO.1 WIRE 
    1. Connect the switch wire connector to the transmission shift switch.
    2. Measure the resistance between each terminal when the paddle shift is moved to each position.

      Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Paddle Shift Position Tester Connection Specified Condition
    Pull continuously "+" (Up shift) 2 - 6 Below 1 Ω
    Release "+" (Up shift) ↑ 10 kΩ or higher
    Pull continuously "-" (Down shift) 3 - 6 Below 1 Ω
    Release "-" (Down shift) ↑ 10 kΩ or higher
    Fig 4: Identifying Terminal Of Switch Wire Connector
    G05318136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE SWITCH NO.1 WIRE 

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM) 
    1. Connect the spiral cable connector and steering pad switch connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below when the paddle shift is moved to each position.

      Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Paddle Shift Position Tester Connection Specified Condition
    Pull continuously "+" (Up shift) A6-30 (SFTU) - Body ground Below 1 Ω
    Release "+" (Up shift) ↑ 10 kΩ or higher
    Pull continuously "-" (Down shift) A6-19 (SFTD) - Body ground Below 1 Ω
    Release "-" (Down shift) ↑ 10 kΩ or higher
    Fig 5: Identifying Terminals Of A6 ECM Connectors
    G05318137Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

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