AUTOMATIC 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 "6" (M6 range) using the transmission control switch.

Moving the shift lever to "+" once raises the shift range by one, and moving the shift lever to "-" once lowers the shift range by one.

WIRING DIAGRAM

B008HM7E14

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


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift SW Status (S Range) Sport 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 display is within Normal Condition range A
      Data display is not within Normal Condition range B

    B

    INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LEVER 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. According to the display on the GTS, read the Data List.


      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 "+" (up-shift)

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

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

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

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

      		 -

      Powertrain > Engine > Data List
      Tester Display
      Sport Shift Up SW
      Sport Shift Down SW
      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 (SHIFT LEVER ASSEMBLY)


    1. Disconnect the transmission control switch connector.

    2. B008IHYC23
      *A for LHD
      *a

      Component without harness connected

      (Transmission Control Switch)

      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 "+" 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
    3. B008IHYC24
      *A for RHD
      *1

      Component without harness connected

      (Transmission Control Switch)

      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 "+" 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
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT LEVER ASSEMBLY Click here

    OK

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


    1. B008I1EC16
      *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
      I23-2 (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. B008HFBC13
      *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
      A35-42 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω
      A35-42 (SFTU) - Body ground Shift lever in M 10 kΩ or higher
      A35-43 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω
      A35-43 (SFTD) - Body ground Shift lever in M 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

  6. INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LEVER ASSEMBLY)


    1. B008IHYC21
      *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
      4 (IG) - 5 (S) Shift lever in M Below 1 Ω
      4 (IG) - 5 (S) Shift lever not in M 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT LEVER ASSEMBLY Click here

    OK

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


    1. B008I1EC17
      *a

      Front view of wire harness connector

      (to Transmission Control Switch)

      Disconnect the 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 Switch Condition Specified Condition
      I23-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK POWER SOURCE CIRCUIT

    OK

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


    1. Disconnect the I23 transmission control switch connector.

    2. Disconnect the A35 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I23-5 (S) - A35-59 (S) Always Below 1 Ω
      I23-5 (S) or A35-59 (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