CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Transmission Control Switch Circuit

DESCRIPTION

After moving the shift lever to M, it is possible to switch the shift range between "1" (M1 range) and "7" (M7 range) using the transmission control switch. Moving the shift lever to "+" once raises the shift range by one, and moving the shift lever to "-" lowers the shift range by one.

WIRING DIAGRAM

A005HG9E06

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK DTC OUTPUT


    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 / Trouble Codes.

    5. Read the DTCs using the GTS.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (SPORT MODE SELECTION SW)


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

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

      Engine and ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Sports Mode Selection SW

      Sport mode select switch status/

      OFF or ON

      OFF: Shift lever not in M, "+" or "-"

      ON: Shift lever position; M, "+" or "-"

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

    B

    INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) Click here

    A

  3. READ VALUE USING GTS (SPORT SHIFT UP SW / SPORT SHIFT DOWN SW)


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

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

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

      Sport shift up switch status/

      OFF or ON

      OFF: Shift lever not held in "+" (up shift)

      ON: Shift lever held in "+" (up shift)

      		 -
      Sports Shift Down SW

      Sport shift down switch status/

      OFF or ON

      OFF: Shift lever not held in "-" (down shift)

      ON: Shift lever held in "-" (down shift)

      		 -
      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

  4. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)


    1. A005J19E23
      Text in Illustration
      *a

      Component without harness connected

      (Shift Lock Control Unit Assembly (Transmission Control Switch))

      Disconnect the transmission control switch connector of the shift lock control unit assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (SFTD) - 11 (E) Shift lever held in "-" (down-shift) Below 1 Ω
      Shift lever not held in "-" (down shift) 10 kΩ or higher
      5 (SFTU) - 11 (E) Shift lever held in "+" (up-shift) Below 1 Ω
      Shift lever not held in "+" (up shift) 10 kΩ or higher

    3. Reconnect the transmission control switch connector of the shift lock control unit assembly.


    NG

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)


    1. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-42 (SFTU) - Body ground Shift lever held in "+" (up-shift) Below 1 Ω
      Shift lever not held in "+" (up shift) 10 kΩ or higher
      A58-43 (SFTD) - Body ground Shift lever held in "-" (down-shift) Below 1 Ω
      Shift lever not held in "-" (down shift) 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  6. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  7. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned value of the deceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, deceleration 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

      • Brake actuator assembly (Skid control ECU)

      • Oil pressure sensor

      • Deceleration sensor

    • After reset memory, always perform deceleration sensor (deceleration sensor zero point) calibration first, and then the CVT oil pressure calibration.

    • Always perform the zero point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during the zero point calibration.


    1. Using the GTS, perform the reset memory, deceleration sensor zero point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END

  8. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)


    1. A005J19E22
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Control Unit Assembly

      (Transmission Control Switch))

      Disconnect the transmission control switch connector of the shift lock control unit assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (IG) - 13 (S) Shift lever in M, "+" or "-" Below 1 Ω
      Shift lever not in M, "+" or "-" 10 kΩ or higher

    NG

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (IG POWER SUPPLY)


    1. Turn the ignition switch to ON.

    2. A005I4TE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (Transmission Control Unit Assembly

      (Transmission Control Switch))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F25-6 (IG) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)


    1. Disconnect the ECM connector.

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

      Standard Resistance (Check for open)
      Tester Connection Condition Specified Condition
      F25-13 (S) - A58-41 (S) Always Below 1 Ω
      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      F25-13 (S) or A58-41 (S) - Body ground and other terminals Always 10 kΩ or higher

    3. Connect the ECM connector.

    4. Connect the transmission control switch connector of the shift lock control unit assembly.


    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  11. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  12. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned value of the deceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, deceleration 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

      • Brake actuator assembly (Skid control ECU)

      • Oil pressure sensor

      • Deceleration sensor

    • After reset memory, always perform deceleration sensor (deceleration sensor zero point) calibration first, and then the CVT oil pressure calibration.

    • Always perform the zero point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during the zero point calibration.


    1. Using the GTS, perform the reset memory, deceleration sensor zero point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END