CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 1ZR-FAE) 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

A01TB78E06

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.


      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 (SPORTS MODE SELECTION SW)


    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.

    5. According to 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 Mode Selection SW Transmission control switch status OFF or ON

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

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

      		 -

      Powertrain > Engine and ECT > 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 ignition switch to ON.

    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 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 "+" and "+" 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 "-" and "-" shift paddle switch released

      		 -

      Powertrain > Engine and ECT > 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. A01TASEC55
      *A for LHD
      *B for RHD
      *a

      Component without harness connected

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

      Disconnect the E29 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 (for LHD)
      Tester Connection Condition Specified Condition
      3 (SFTU) - 2 (E) Shift lever held in "+" Below 1 Ω
      3 (SFTU) - 2 (E) Shift lever in M 10 kΩ or higher
      1 (SFTD) - 2 (E) Shift lever held in "-" Below 1 Ω
      1 (SFTD) - 2 (E) Shift lever in M 10 kΩ or higher
      Standard Resistance (for RHD)
      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 E29 transmission control switch connector of the shift lock control unit assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) for TMMT Made: Click here
    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) for TMUK Made: Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - 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) - Body ground Shift lever held in "-" Below 1 Ω
      A50-43 (SFTD) - Body ground Shift lever in M 10 kΩ or higher
      A50-42 (SFTU) - Body ground Shift lever held in "+" Below 1 Ω
      A50-42 (SFTU) - Body ground Shift lever in M 10 kΩ or higher

    3. Connect the A50 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. A01TASEC12
      *a

      Component without harness connected

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

      Disconnect the E29 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 (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 E29 transmission control switch connector of the shift lock control unit assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) for TMMT Made: Click here
    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) for TMUK Made: Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH POWER SOURCE)


    1. Disconnect the E29 transmission control switch connector of the shift lock control unit assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E29-4 (IG) - Body ground Ignition switch ON 11 to 14 V
      E29-4 (IG) - Body ground Ignition switch off Below 1 V

    3. Connect the E29 transmission control switch connector of the shift lock control unit assembly.

      Result
      Proceed to
      OK
      NG

    NG

    INSPECT POWER SOURCE CIRCUIT

    OK

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


    1. Disconnect the E29 transmission control switch connector of the shift lock control unit assembly.

    2. Disconnect the A50 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E29-5 (S) - A50-59 (S) Always Below 1 Ω
      E29-5 (S) - Body ground and other terminals Always 10 kΩ or higher
      A50-59 (S) - Body ground and other terminals Always 10 kΩ or higher

    4. Connect the A50 ECM connector.

    5. Connect the E29 transmission control switch connector of the shift lock control unit assembly.

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  10. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here