CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Shift Paddle Switch Circuit

DESCRIPTION

When the shift lever is in M, the shift range can be changed using the shift paddle switches. It is also possible to select the shift range when the vehicle is being driven with the shift lever in D by operating the shift paddle switches.

WIRING DIAGRAM

A00Y7A9E15

PROCEDURE


  1. READ VALUE USING GTS (SPORTS SHIFT UP SWITCH AND SPORTS SHIFT DOWN SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. In accordance with the display on the GTS, read the Data List.


      Powertrain > Engine and ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Sports Shift Up SW Sport shift up switch status OFF or ON

      • ON: Shift lever held in "+" or "+" shift paddle switch pulled

      • OFF: Shift lever not held in "+" or "+" shift paddle switch released

      		 -
      Sports Shift Down SW Sport shift down switch status OFF or ON

      • ON: Shift lever held in "-" or "-" shift paddle switch pulled

      • OFF: Shift lever not held in "-" or "-" shift paddle switch released

      		 -
      Result
      Result Proceed to
      Data display is within Normal Condition range A
      Data display is not within Normal Condition range B

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

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


    1. Disconnect the A50 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A50-42 (SFTU) - Body ground "+" continuously pulled Below 3 Ω
      A50-42 (SFTU) - Body ground Released 10 kΩ or higher
      A50-43 (SFTD) - Body ground "-" continuously pulled Below 3 Ω
      A50-43 (SFTD) - Body ground Released 10 kΩ or higher

    3. Connect the A50 ECM connector.

      Result
      Proceed to
      OK
      NG

    OK

    GO TO TRANSMISSION CONTROL SWITCH CIRCUIT Click here

    NG

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


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

    2. Wait for at least 90 seconds.

    3. Remove the steering wheel assembly.

    4. Remove the steering column cover.

    5. Disconnect the E6 spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E6-2 (ECC) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)

    OK

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


    1. Disconnect the A50 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A50-43 (SFTD) - E6-7 (SDN) Always Below 1 Ω
      A50-43 (SFTD) or E6-7 (SDN) - Body ground Always 10 kΩ or higher
      A50-42 (SFTU) - E6-14 (SUP) Always Below 1 Ω
      A50-42 (SFTU) or E6-14 (SUP) - Body ground Always 10 kΩ or higher

    3. Connect the A50 ECM connector.

    4. Connect the E6 spiral cable sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM)

    OK

  5. CHECK WIRE HARNESS AND CONNECTORS (SPIRAL CABLE SUB-ASSEMBLY - SHIFT PADDLE SWITCH)


    1. A00Y5XMC08
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Disconnect the z1 steering pad switch connector from the spiral cable sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z1-6 (SUP) - z1-7 (ECC) "+" continuously pulled Below 3 Ω
      z1-6 (SUP) - z1-7 (ECC) Released 10 kΩ or higher
      z1-12 (SDN) - z1-7 (ECC) "-" continuously pulled Below 3 Ω
      z1-12 (SDN) - z1-7 (ECC) Released 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  6. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Disconnect the z1 and E6 connectors from the spiral cable sub-assembly.

      A00YALYC05
      *a

      Component without harness connected

      (Spiral Cable Sub-assembly)

      		 *b Steering Pad Switch Side
      *c Vehicle Side - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z1-7 (ECC) - E6-2 (ECC) Always Below 3 Ω
      z1-6 (SUP) - E6-14 (SUP) Always Below 3 Ω
      z1-12 (SDN) - E6-7 (SDN) Always Below 3 Ω
      z1-7 (ECC) or E6-2 (ECC) - Body ground and other terminals Always 10 kΩ or higher
      z1-6 (SUP) or E6-14 (SUP) - Body ground and other terminals Always 10 kΩ or higher
      z1-12 (SDN) or E6-7 (SDN) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  7. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. PERFORM INITIALIZATION

    Note


    • Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Airbag sensor assembly (Yaw rate and acceleration sensor)

    • After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.

    • Always perform calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during calibration.


    1. Using the GTS, perform Reset Memory, deceleration sensor zero point calibration and CVT oil pressure calibration.

      Click here

    2. Check for DTCs again.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END

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


    1. A00Y7VAC09
      *a

      Component without harness connected

      (Shift paddle switch LH)
      *b

      Component without harness connected

      (Shift paddle switch RH)

      Disconnect the C and B connectors from the transmission shift switch LH and RH.

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

      Standard Resistance (Transmission Shift Switch LH)
      Tester Connection Condition Specified Condition
      C-3 (ECC) - C-2 (SFTD) "-" continuously pulled Below 3 Ω
      C-3 (ECC) - C-2 (SFTD) Released 10 kΩ or higher
      C-4 (ECC1) - C-2 (SFTD) "-" continuously pulled Below 3 Ω
      C-4 (ECC1) - C-2 (SFTD) Released 10 kΩ or higher
      Standard Resistance (Transmission Shift Switch RH)
      Tester Connection Condition Specified Condition
      B-3 (SFTU) - B-2 (ECC1) "+" continuously pulled Below 3 Ω
      B-3 (SFTU) - B-2 (ECC1) Released 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  10. INSPECT NO. 1 SWITCH WIRE


    1. A00Y5BFC03
      *a

      Front view of wire harness connector

      (to Steering Pad Switch Connector)

      Connect the C and B transmission shift switch LH and RH connectors.

    2. Disconnect the A No.1 switch wire from steering pad switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-2 (SFTU) - A-7 (ECC) "+" continuously pulled Below 3 Ω
      A-2 (SFTU) - A-7 (ECC) Released 10 kΩ or higher
      A-3 (SFTD) - A-7 (ECC) "-" continuously pulled Below 3 Ω
      A-3 (SFTD) - A-7 (ECC) Released 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 SWITCH WIRE - SPIRAL CABLE SUB-ASSEMBLY)

    NG

    REPLACE NO. 1 SWITCH WIRE Click here