AUTOMATIC 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 M8 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

B006NQ7E17

CAUTION / NOTICE / HINT

Note

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 / Transmission / Trouble Codes.


      Powertrain > Engine > Trouble Codes

    5. Check for 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 (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 / 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
      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 > Engine > Data List
      Tester Display
      Shift SW Status (S Range)
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    B

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

    A

  3. 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 "+"

      • OFF: Shift lever not held in "+"

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

      • ON: Shift lever held in "-"

      • OFF: Shift lever not held in "-"

      		 -

      Powertrain > Engine > Data List
      Tester Display
      Sport Shift Up SW
      Sport 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 TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY)


    1. B006LIXC55
      *A for LHD
      *B for RHD
      *a

      Component without harness connected

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

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

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

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  5. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY) - 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
      A53-37 (SFTD) - Body ground Shift lever held in "-" Below 1 Ω
      A53-37 (SFTD) - Body ground Shift lever in M 10 kΩ or higher
      A53-38 (SFTU) - Body ground Shift lever held in "+" Below 1 Ω
      A53-38 (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 REGISTRATION Click here

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


    1. B006LIXC12
      *a

      Component without harness connected

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

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

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Disconnect the G3 transmission control switch (shift lock control unit assembly) 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 (TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY) - 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) - A53-17 (S) Always Below 1 Ω
      G3-5 (S) or A53-17 (S) - Body ground and other terminals Always 10 kΩ or higher

    3. Connect the A53 ECM connector.

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

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  10. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM REGISTRATION Click here