AUTOMATIC TRANSMISSION SYSTEM Transmission Control Switch Circuit

DESCRIPTION

The transmission control switch detects when the shift lever is moved to S.

Using the transmission control switch, when the shift lever is in S, it is possible to select between 1st and 8th gears (S1 to S8).

Moving the shift lever to "+" once selects the next higher gear, and moving the shift lever to "-" once selects the next lower gear.

WIRING DIAGRAM

A01X68DE01

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. 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 / Data List.

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

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

      Sport (S) mode select switch status/

      ON or OFF

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

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

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

    B

    INSPECT TRANSMISSION CONTROL SWITCH Click here

    A

  2. 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 / Data List.

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

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

      Sport shift up switch status/

      ON or OFF

      • ON: Shift lever in "+" (up-shift)

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

      		 -
      Sports Shift Down SW

      Sport shift down switch status/

      ON or OFF

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

      • OFF: Shift lever not 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

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    B

  3. INSPECT TRANSMISSION CONTROL SWITCH


    1. B001ZIKE55
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Control Switch)

      Disconnect the transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (SFTU) - 5 (E)

      Shift lever held in "+"

      (Up-shift)

      		 Below 1 Ω
      1 (SFTD) - 5 (E)

      Shift lever held in "-"

      (Down-shift)

      		 Below 1 Ω
      2 (SFTU) - 5 (E) Shift lever not held in "+" 10 kΩ or higher
      1 (SFTD) - 5 (E) Shift lever not held in "-" 10 kΩ or higher

    NG

    REPLACE TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND)


    1. A01X2VKE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control Switch)

      Disconnect the transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E52-5 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01X854E05
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A38-39 (SFTU) - Body ground

      Shift lever held in "+"

      (Up-shift)

      		 Below 1 Ω
      A38-47 (SFTD) - Body ground

      Shift lever held in "-"

      (Down-shift)

      		 Below 1 Ω
      A38-39 (SFTU) - Body ground Shift lever not held in "+" 10 kΩ or higher
      A38-47 (SFTD) - Body ground Shift lever not held in "-" 10 kΩ or higher

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT TRANSMISSION CONTROL SWITCH


    1. A01X2F0E56
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Control Switch)

      Disconnect the transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (IG) - 7 (S) Shift lever in S, "+" or "- " Below 1 Ω
      3 (IG) - 7 (S) Shift lever not in S, "+" or "-" 10 kΩ or higher

    NG

    REPLACE TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (BATTERY - TRANSMISSION CONTROL SWITCH)


    1. A01X8QDE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control Switch)

      Disconnect the transmission control switch connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E52-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      E52-3 (IG) - Body ground Engine switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the E52 transmission control switch connector.

    2. Disconnect the A38 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E52-7 (S) - A38-27 (S) Always Below 1 Ω
      E52-7 (S) - Body ground Always 10 kΩ or higher
      A38-27 - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR