CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Pattern Select Switch Sport Mode Circuit

DESCRIPTION

The ECM memory contains the programs for the normal and sport shift patterns.

By following the programs corresponding to the signals from the pattern select switch assembly, the park/neutral position switch and other various sensors, the ECM switches the shift control solenoid valves on and off, and controls the transaxle gear ratio.

WIRING DIAGRAM

A01TBIHE05
*a Pattern Select Switch Assembly

PROCEDURE


  1. READ VALUE USING GTS (PATTERN SWITCH (PWR/M))


    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
      Pattern Switch (PWR/M) Pattern select switch (SPORT) status OFF or ON

      • OFF: Sport mode off

      • ON: Sport mode on

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

    B

    INSPECT PATTERN SELECT SWITCH ASSEMBLY Click here

    A

  2. REPLACE ECM


    1. Replace the ECM.


      Result
      Proceed to
      NEXT

    NEXT

  3. 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

  4. INSPECT PATTERN SELECT SWITCH ASSEMBLY


    1. A01TBYPC03
      *a

      Component without harness connected

      (Pattern select switch assembly)

      Remove the pattern select switch assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (MSW1) - 3 (MSW2) Pattern select switch on Below 1 Ω
      6 (MSW1) - 3 (MSW2) Pattern select switch off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PATTERN SELECT SWITCH ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E83-3 (MSW2) - Body ground Always Below 1 Ω

    2. Install the pattern select switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND)

    OK

  6. CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH 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
      A50-57 (PWMS) - Body ground Pattern select switch on Below 1 Ω
      A50-57 (PWMS) - Body ground Pattern select switch off 10 kΩ or higher

    3. Connect the A50 ECM connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - ECM)

    OK

  7. REPLACE ECM


    1. Replace the ECM.


      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