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Home >> Lexus >> 2006 >> IS 250 RWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission (A960E)) >> Automatic Transmission System >> Shift Paddle Switch Circuit >> Wiring Diagram

Shift Paddle Switch Circuit: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.
Fig 1: Wiring Diagram - Shift Paddle Switch Circuit
G04045809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Specified Condition
    2 - Body ground Below 1 Ω
    Fig 2: Checking Spiral Cable - Body Ground
    G04045810Courtesy 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 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    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 3: Inspecting Spiral Cable Sub-Assembly
    G04045811Courtesy 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 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    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 4: Inspecting Transmission Shift Switch Assembly
    G04045812Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE TRANSMISSION SHIFT SWITCH ASSEMBLY 

    OK : Go to next Step 

  4. INSPECT SWITCH 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 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    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 5: Inspecting Switch Wire
    G04045813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE SWITCH 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 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    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 6: Identifying ECM A6 Connector
    G04045814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

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