CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Transmission Control Switch Circuit

DESCRIPTION

After moving the shift lever to M, it is possible to change the shift range between M1 and M7 using the shift lever. 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

B006NQ7E06

CAUTION / NOTICE / HINT

Note


  • Perform initialization after replacing any parts related to the continuously variable transaxle system.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

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

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine > 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 (SPORTS MODE SELECTION SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Sports Mode Selection SW Sport mode select switch status OFF or ON

      • ON: Shift lever in M, "+" or "-"

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

      		 -

      Powertrain > Engine > Data List
      Tester Display
      Sports Mode Selection SW
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    B

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

    A

  3. READ VALUE USING GTS (SPORTS SHIFT UP SW AND SPORTS SHIFT DOWN SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Powertrain > Engine > 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 "+"

      • OFF: Shift lever not held in "+"

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

      • ON: Shift lever held in "-"

      • OFF: Shift lever not held in "-"

      		 -

      Powertrain > Engine > Data List
      Tester Display
      Sports Shift Up SW
      Sports Shift Down SW
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

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


    1. B006LIXC47
      *a

      Component without harness connected

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

      Disconnect the G3 shift lock control unit assembly (transmission control switch) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (SFTU) - 2 (E) Shift lever held in "+" Below 1 Ω
      1 (SFTU) - 2 (E) Shift lever in M 10 kΩ or higher
      3 (SFTD) - 2 (E) Shift lever held in "-" Below 1 Ω
      3 (SFTD) - 2 (E) Shift lever in M 10 kΩ or higher

    3. Connect the G3 shift lock control unit assembly (transmission control switch) connector.

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Disconnect the A53 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A53-43 (SFTD) - Body ground Shift lever held in "-" Below 1 Ω
      A53-43 (SFTD) - Body ground Shift lever in M 10 kΩ or higher
      A53-42 (SFTU) - Body ground Shift lever held in "+" Below 1 Ω
      A53-42 (SFTU) - Body ground Shift lever in M 10 kΩ or higher

    3. Connect the A53 ECM connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

    OK

  6. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

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


    1. B006LIXC12
      *a

      Component without harness connected

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

      Disconnect the G3 shift lock control unit assembly (transmission control switch) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (IG) - 5 (S) Shift lever in M Below 1 Ω
      4 (IG) - 5 (S) Shift lever not in M 10 kΩ or higher

    3. Connect the G3 shift lock control unit assembly (transmission control switch) connector.

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  8. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) POWER SOURCE)


    1. B006MRUC21
      *a

      Front view of wire harness connector

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

      Disconnect the G3 shift lock control unit assembly (transmission control switch) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G3-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      G3-4 (IG) - Body ground Engine switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK POWER SOURCE CIRCUIT (TRANSMISSION CONTROL SWITCH)

    OK

  9. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) - ECM)


    1. Disconnect the A53 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G3-5 (S) - A53-59 (S) Always Below 1 Ω
      G3-5 (S) - Body ground and other terminals Always 10 kΩ or higher
      A53-59 (S) - Body ground and other terminals Always 10 kΩ or higher

    3. Connect the A53 ECM connector.

    4. Connect the G3 shift lock control unit assembly (transmission control switch) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) - ECM)

    OK

  10. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here