AUTOMATIC TRANSAXLE SYSTEM Transmission Control Switch Circuit

DESCRIPTION

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

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

B007Z3UE46

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. READ VALUE USING GTS (Shift SW Status (S Range))


    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 / Transmission / Data List

    5. Read the Data List according to the display on the GTS.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift SW Status (S Range) Sport (M) mode select switch status ON or OFF

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

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

      		 -

      Powertrain > Transmission > Data List
      Tester Display
      Shift SW Status (S Range)
      Result
      Result Proceed to
      Data List values are normal A
      Data List values are not normal B

    B

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

    A

  2. READ VALUE USING GTS (SPORT SHIFT UP SW AND SPORT 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. Read the Data List according to the display on the GTS.


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Sport Shift Up SW Sport shift up switch status ON or OFF

      • ON: Shift lever held in "+" or "+" shift paddle switch pulled

      • OFF: Shift lever not held in "+" and "+" shift paddle switch released

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

      • ON: Shift lever held in "-" or "-" shift paddle switch pulled

      • OFF: Shift lever not held in "-" and "-" shift paddle switch released

      		 -

      Powertrain > Engine > Data List
      Tester Display
      Sport Shift Up SW
      Sport Shift Down SW
      Result
      Result Proceed to
      Data List values are normal A
      Data List values are not normal B

    A

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

    B

  3. INSPECT TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY)


    1. Disconnect the J21 transmission control switch connector.

    2. B007WXJC46
      *a

      Component without harness connected

      (Transmission Control Switch (Transmission Floor Shift Assembly))

      for LHD:

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (SFTU) - 2 (E) Shift lever held in "+" (Up shift) Below 1 Ω
      Shift lever not held in "+" (Up shift) 10 kΩ or higher
      1 (SFTD) - 2 (E) Shift lever held in "-" (Down shift) Below 1 Ω
      Shift lever not held in "-" (Down shift) 10 kΩ or higher
    3. B007WXJC25
      *a

      Component without harness connected

      (Transmission Control Switch (Transmission Floor Shift Assembly))

      for RHD:

      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 "+" (Up shift) Below 1 Ω
      Shift lever not held in "+" (Up shift) 10 kΩ or higher
      3 (SFTD) - 2 (E) Shift lever held in "-" (Down shift) Below 1 Ω
      Shift lever not held in "-" (Down shift) 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Disconnect the J21 transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J21-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Connect the J21 transmission floor shift assembly (transmission control switch) connector.

    2. Disconnect the A37 ECM connector.

    3. w/ Shift Paddle Switch:

      Disconnect the spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A37-38 (SFTU) - Body ground Shift lever held in "+" (Up shift) Below 1 Ω
      Shift lever not held in "+" (Up shift) 10 kΩ or higher
      A37-37 (SFTD) - Body ground Shift lever held in "-" (Down shift) Below 1 Ω
      Shift lever not held in "-" (Down shift) 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

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

  6. INSPECT TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY)


    1. B007WXJC47
      *a

      Component without harness connected

      (Transmission Control Switch (Transmission Floor Shift Assembly))

      Disconnect the J21 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, "+" or "-" Below 1 Ω
      Shift lever not in M, "+" or "-" 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Disconnect the J21 transmission control switch connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J21-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the J21 transmission control switch connector.

    2. Disconnect the A37 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J21-5 (S) - A37-17 (S) Always Below 1 Ω
      J21-5 (S) or A37-17 (S) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR