AUTOMATIC TRANSAXLE SYSTEM Shift Paddle Switch Circuit

DESCRIPTION

Moving the shift lever to S enables the shift range to be selected. The driver can select the shift range by operating the "+" or "-" shift paddle switch.

WIRING DIAGRAM

B000MZRE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (SPORT SHIFT SWITCH STATUS)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Engine and ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Sports Shift Up SW

      Sport shift up switch status/

      ON or OFF

      • ON: Continuously shift to "+" (Up shift)

      • OFF: Release "+" (Up shift)

      		 -
      Sports Shift Down SW

      Sport shift down switch status/

      ON or OFF

      • ON: Continuously shift to "-" (Down shift)

      • OFF: Release "-" (Down shift)

      		 -
      Result
      Result Proceed to
      Data List values are not normal A
      Data List values are normal B

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  2. CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH CIRCUIT)


    1. Disconnect the A25 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A25-43 (SFTD) - Body ground "-" (Down shift) shift paddle operated and held Below 1 Ω
      "-" (Down shift) shift paddle not operated 10 kΩ or higher
      A25-42 (SFTU) - Body ground "+" (Up shift) shift paddle operated and held Below 1 Ω
      "+" (Up shift) shift paddle not operated 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - BODY GROUND) Click here

    OK

    GO TO TRANSMISSION CONTROL SWITCH CIRCUIT Click here

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the cable from the negative (-) battery terminal.

    2. Wait for at least 90 seconds.

    3. Remove the steering wheel assembly.

    4. Remove the steering column cover.

    5. Disconnect the I28 spiral cable with sensor sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I28-2 (ECC) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - ECM)


    1. Disconnect the A25 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A25-43 (SFTD) - I28-7 (SDN) Always Below 1 Ω
      A25-43 (SFTD) or I28-7 (SDN) - Body ground Always 10 kΩ or higher
      A25-42 (SFTU) - I28-14 (SUP) Always Below 1 Ω
      A25-42 (SFTU) or I28-14 (SUP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - SHIFT PADDLE SWITCH)


    1. Remove the horn button assembly.

    2. Disconnect the z3 steering pad switch assembly connector.

    3. B000IPPE02
      Text in Illustration
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z3-6 (SUP) - z3-7 (ECC) "+" (Up shift) shift paddle operated and held Below 1 Ω
      "+" (Up shift) shift paddle not operated 10 kΩ or higher
      z3-12 (SDN) - z3-7 (ECC) "-" (Down shift) shift paddle operated and held Below 1 Ω
      "-" (Down shift) shift paddle not operated 10 kΩ or higher

    NG

    INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH) Click here

    OK

  6. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY


    1. B000JGAE02
      Text in Illustration
      *a

      Component without harness connected

      (Spiral Cable with Sensor Sub-assembly)
      *b Steering Pad Switch Assembly Side
      *c Vehicle Side

      Disconnect the z3 steering pad switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z3-7 (ECC) - I28-2 (ECC) Always Below 3 Ω
      z3-6 (SUP) - I28-14 (SUP) Always Below 3 Ω
      z3-12 (SDN) - I28-7 (SDN) Always Below 3 Ω
      z3-7 (ECC) or I28-2 (ECC) - All other terminals Always 10 kΩ or higher
      z3-6 (SUP) or I28-14 (SUP) - All other terminals Always 10 kΩ or higher
      z3-12 (SDN) or I28-7 (SDN) - All other terminals Always 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for TMC, TMMR Made) B
      NG (for TMMK Made) C

    B

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    C

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

  7. INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH)


    1. B000IX1E17
      Text in Illustration
      *a

      Component without harness connected

      (Shift Paddle Switch LH (Transmission Shift Switch Assembly))
      *b

      Component without harness connected

      (Shift Paddle Switch RH (Transmission Shift Switch Assembly))

      Disconnect the A and B transmission shift switch assembly connectors.

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

      Standard Resistance
      Transmission Shift Switch LH:
      Tester Connection Condition Specified Condition
      B-3 (ECC) - B-2 (SFTD) "-" (Down shift) shift paddle operated and held Below 1 Ω
      "-" (Down shift) shift paddle not operated 10 kΩ or higher
      B-4 (ECC1) - B-2 (SFTD) "-" (Down shift) shift paddle operated and held Below 1 Ω
      "-" (Down shift) shift paddle not operated 10 kΩ or higher
      Transmission Shift Switch RH:
      Tester Connection Condition Specified Condition
      A-3 (SFTU) - A-2 (ECC1) "+" (Up shift) shift paddle operated and held Below 1 Ω
      "+" (Up shift) shift paddle not operated 10 kΩ or higher

    NG

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

    OK

  8. INSPECT NO. 1 SWITCH WIRE


    1. Connect the A and B transmission shift switch assembly connectors.

    2. B000LZ0E06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Steering Pad Switch Assembly)

      Disconnect the C No. 1 switch wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C-3 (SFTD) - C-7 (ECC) "-" (Down shift) shift paddle operated and held Below 1 Ω
      "-" (Down shift) shift paddle not operated 10 kΩ or higher
      C-2 (SFTU) - C-7 (ECC) "+" (Up shift) shift paddle operated and held Below 1 Ω
      "+" (Up shift) shift paddle not operated 10 kΩ or higher

    NG

    REPLACE NO. 1 SWITCH WIRE Click here

    OK

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here