AUTOMATIC TRANSAXLE SYSTEM Transmission Control Switch Circuit

DTC Code DTC Name
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

C279429E01

CAUTION / NOTICE / HINT

Note:

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

Tip:

  • Refer to the inspection procedure for the CAN communication system.

  • If the CAN communication malfunctions, the TCM cannot receive current data from the ECM. In this case, the freeze frame data output from the TCM has not been updated, so the data will not be useful for the inspection. However, reading the Data List as the first step in troubleshooting is an effective way to find malfunctions.

  • The malfunctioning area can be confirmed using the Bus Check function of the GTS.

    for LHD:

    Click hereClick hereClick here

    for RHD:

    Click hereClick hereClick here

PROCEDURE

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

    1. C267936C03

      *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 Condition

      Switch Condition

      Specified Condition

      G36-4 (IG) - Body ground

      Ignition switch ON

      11 to 14 V

      G36-4 (IG) - Body ground

      Ignition switch off

      Below 1 V

    Result

    Proceed to

    OK

    NG
    NG

    CHECK POWER SOURCE CIRCUIT

    OK

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

    1. Disconnect the transmission control switch connector.

    2. C267936C04

      *a

      Front view of wire harness connector

      (to Transmission Control Switch)

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G36-2 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the transmission control switch connector.

    2. C277025C06

      *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

      4 (IG) - 5 (S)

      Shift lever in M, "+" or "-"

      Below 1 Ω

      3 (SFTU) - 2 (E)

      Shift lever held in "+" (Up-shift)

      Below 1 Ω

      1 (SFTD) - 2 (E)

      Shift lever held in "-" (Down-shift)

      Below 1 Ω

      4 (IG) - 5 (S)

      Shift lever not in M, "+" or "-"

      10 kΩ or higher

      3 (SFTU) - 2 (E)

      Shift lever in M

      10 kΩ or higher

      1 (SFTD) - 2 (E)

      Shift lever in M

      10 kΩ or higher
    3. C277025C07

      *A

      for RHD

      *a

      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

      4 (IG) - 5 (S)

      Shift lever in M, "+" or "-"

      Below 1 Ω

      1 (SFTU) - 2 (E)

      Shift lever held in "+" (Up-shift)

      Below 1 Ω

      3 (SFTD) - 2 (E)

      Shift lever held in "-" (Down-shift)

      Below 1 Ω

      4 (IG) - 5 (S)

      Shift lever not in M, "+" or "-"

      10 kΩ or higher

      1 (SFTU) - 2 (E)

      Shift lever in M

      10 kΩ or higher

      3 (SFTD) - 2 (E)

      Shift lever in M

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY

    Click here

    OK

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

    1. C200874C04

      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A61-9 (S) - Body ground

      • Ignition switch ON

      • Shift lever in M, "+" or "-"

      11 to 14 V

      A61-9 (S) - Body ground

      • Ignition switch ON

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

      Below 1 V

    4. Turn the ignition switch off.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B76-61 (SFTU) - Body ground

      Shift lever held in "+" (Up-shift)

      Below 1 Ω

      A61-28 (SFTD) - Body ground

      Shift lever held in "-" (Down-shift)

      Below 1 Ω

      B76-61 (SFTU) - Body ground

      Shift lever in M

      10 kΩ or higher

      A61-28 (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