AUTOMATIC TRANSMISSION SYSTEM Transmission Control Switch Circuit

DESCRIPTION

When moving the shift lever into the M position using the transmission control switch, it is possible to switch the shift range position between "1" (first range) and "6" (sixth range).

Shifting up "+" once raises one shift range position, and shifting down "-" lowers one shift range position.

WIRING DIAGRAM

A01FHM3E04

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01FFDZE11
      Text in Illustration
      *1

      Component without harness connected

      (Transmission Control Switch)

      Disconnect the transmission control switch connector.

    2. Measure resistance between each terminal of transmission control switch when the shift lever is moved to each position.

      Standard resistance
      Tester Connection Shift Position Specified Condition
      4 - 5 M, "+" and "-" Below 1 Ω
      ↑ Except M, "+" and "-" 10 kΩ or higher
      3 - 2

      Press continuously

      "+"

      (Up shift)

      		 Below 1 Ω
      ↑ M 10 kΩ or higher
      1 - 2

      Press continuously

      "-"

      (Down shift)

      		 Below 1 Ω
      ↑ M 10 kΩ or higher

    NG

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

    OK

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - RH ECU-IG FUSE, BODY GROUND)

    A01FDZ8E08
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Transmission Control Switch)

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      N50-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      ↑ Engine switch off Below 1 V

    2. Turn the engine switch off position.

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

      Standard resistance
      Tester Connection Specified Condition
      N50-2 (E) - Body ground Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01FFM4E03
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to ECM)

      Connect the transmission control switch connector.

    2. Disconnect the ECM connector.

    3. Turn the engine switch on (IG) position, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

      Standard voltage
      Tester Connection Shift Position Specified Condition
      A21-16 (S) - Body ground M, "+" and "-" 11 to 14 V
      ↑ Except M, "+" and "-" Below 1 V

    4. Turn the engine switch off position.

    5. Disconnect the spiral cable connector.

    6. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard resistance
      Tester Connection Shift Position Specified Condition
      A21-8 (SFTU) - Body ground

      Press continuously

      "+"

      (Up shift)

      		 Below 1 Ω
      ↑ M 10 kΩ or higher
      A21-7 (SFTD) - Body ground

      Press continuously

      "-"

      (Down shift)

      		 Below 1 Ω
      ↑ M 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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