AUTOMATIC TRANSMISSION SYSTEM Shift Paddle Switch Circuit

DESCRIPTION

When the shift lever is in D, operating the "-" side shift paddle switch will cause the transmission to enter fixed range mode which restricts the highest gear. By operating the shift paddle switches "+" (UP) or "-" (DOWN), the shift range can be changed.

When the vehicle is being driven in D (fixed range mode), if the vehicle is stopped or the accelerator pedal is kept steady for a certain period of time with the transmission in the same gear, the vehicle will change back automatically to normal D position operation.

When the shift lever is in M, it is possible to make use of the highest engine speeds by holding the vehicle in a gear. Gear hold control means that gear shifts will not be performed as long as the paddle switches are not operated in either the "+" (UP) or "-" (DOWN) direction.

WIRING DIAGRAM

A01FHQ2E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - BODY GROUND)


    1. A01FJ4EE06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Disconnect the spiral cable connector Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N31-2 (ECC) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. A01FD8BE01
      Text in Illustration
      *1 Spiral Cable Sub-assembly

      Remove the spiral cable sub-assembly Click here.

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


      1. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise and measure the resistance. Then rotate the spiral cable 2.5 times counterclockwise and measure the resistance.

      2. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise. Then while rotating the spiral cable 5 times counterclockwise, measure the resistance.

        Standard Resistance
        Tester Connection Condition Specified Condition
        N31-2 (ECC) - z4-7 (ECC) Always Below 1 Ω
        N31-14 (SUP) - z4-6 (SUP) Always Below 1 Ω
        N31-7 (SDN) - z4-12 (SDN) Always Below 1 Ω
        N31-2 (ECC) or z4-7 (ECC) - All other terminals Always 10 kΩ or higher
        N31-14 (SUP) or z4-6 (SUP) - All other terminals Always 10 kΩ or higher
        N31-7 (SDN) or z4-12 (SDN) - All other terminals Always 10 kΩ or higher

        Note

        As the spiral cable may break, do not rotate the spiral cable more than the specified amount.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  3. INSPECT SHIFT PADDLE SWITCH LH (TRANSMISSION SHIFT SWITCH ASSEMBLY)


    1. A01FFW3E01
      Text in Illustration
      *1 Shift Paddle Switch LH (Transmission Shift Switch Assembly)

      Remove the shift paddle switch LH Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      SDN - ECC "-" shift paddle operated and held (down-shift) Below 2.5 Ω
      SDN - ECC "-" shift paddle not operated (down-shift) 1 MΩ or higher

    NG

    REPLACE SHIFT PADDLE SWITCH LH (TRANSMISSION SHIFT SWITCH ASSEMBLY) Click here

    OK

  4. INSPECT SHIFT PADDLE SWITCH RH (TRANSMISSION SHIFT SWITCH ASSEMBLY)


    1. A01FG12E01
      Text in Illustration
      *1 Shift Paddle Switch RH (Transmission Shift Switch Assembly)

      Remove the shift paddle switch RH Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      SUP - ECC "+" shift paddle operated and held (up-shift) Below 2.5 Ω
      SUP - ECC "+" shift paddle not operated (up-shift) 1 MΩ or higher

    NG

    REPLACE SHIFT PADDLE SWITCH RH (TRANSMISSION SHIFT SWITCH ASSEMBLY) Click here

    OK

  5. INSPECT NO. 1 SWITCH WIRE


    1. A01FGG4E14
      Text in Illustration
      *a No. 1 Switch Wire (Steering Pad Switch Side)

      Disconnect the No. 1 switch wire connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      SDN - ECC "-" shift paddle operated and held (down-shift) Below 2.5 Ω
      SUP - ECC "+" shift paddle operated and held (up-shift) Below 2.5 Ω
      SDN - ECC "-" shift paddle not operated (down-shift) 1 MΩ or higher
      SUP - ECC "+" shift paddle not operated (up-shift) 1 MΩ or higher

    NG

    REPLACE NO. 1 SWITCH WIRE Click here

    OK

  6. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. A01FGRKE08
      Text in Illustration
      *a Steering Pad Switch Assembly Connector (to Spiral Cable Sub-assembly)

      Disconnect the steering pad switch assembly connector Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      z4-6 (SUP) - z4-7 (ECC) "+" shift paddle operated and held (up-shift) Below 2.5 Ω
      z4-12 (SDN) - z4-7 (ECC) "-" shift paddle operated and held (down-shift) Below 2.5 Ω
      z4-6 (SUP) - z4-7 (ECC) "+" shift paddle not operated (up-shift) 1 MΩ or higher
      z4-12 (SDN) - z4-7 (ECC) "-" shift paddle not operated (down-shift) 1 MΩ or higher

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH - ECM)


    1. A01FGQRE03
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to ECM)

      Disconnect the ECM connectors.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A21-8 (SFTU) - Body ground "+" shift paddle operated and held (up-shift) Below 2.5 Ω
      A21-7 (SFTD) - Body ground "-" shift paddle operated and held (down-shift) Below 2.5 Ω
      A21-8 (SFTU) - Body ground "+" shift paddle not operated (up-shift) 1 MΩ or higher
      A21-7 (SFTD) - Body ground "-" shift paddle not operated (down-shift) 1 MΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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