AUTOMATIC TRANSMISSION SYSTEM(for 1GR-FE) Transmission Control Switch Circuit

DESCRIPTION

When moving the shift lever to S using the transmission control switch, it is possible to switch the shift range between "1" (1st range) and "5" (5th range).

Shifting to "+" once raises the shift range by one, and shifting to "-" lowers the shift range by one.

WIRING DIAGRAM

A01X6VQE31

PROCEDURE


  1. INSPECT TRANSMISSION CONTROL SWITCH


    1. B001ZIKE39
      Text in Illustration
      *a

      Front view of wire harness connector

      (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
      3 (IG) - 7 (S) Shift lever in S, "+" or "-" Below 1 Ω
      2 (SFTU) - 5 (E)

      Shift lever held in "+"

      (Up-shift)

      		 Below 1 Ω
      1 (SFTD) - 5 (E)

      Shift lever held in "-"

      (Down-shift)

      		 Below 1 Ω
      3 (IG) - 7 (S) Shift lever not in S, "+" or "-" 10 kΩ or higher
      2 (SFTU) - 5 (E) Shift lever in S 10 kΩ or higher
      1 (SFTD) - 5 (E) Shift lever in S 10 kΩ or higher

    NG

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

    OK

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


    1. A01XB9SE02
      Text in Illustration
      *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 Condition Specified Condition
      E52-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      E52-3 (IG) - Body ground Engine switch off Below 1 V

    4. Turn the engine switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E52-5 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01X5O5E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM 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
      A38-25 (S) - Body ground

      • Engine switch on (IG)

      • Shift lever in S, "+" or "-"

      		 11 to 14 V
      A38-25 (S) - Body ground

      • Engine switch on (IG)

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

      		 Below 1 V

    4. Turn the engine switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A38-38 (SFTU) - Body ground

      Shift lever held in "+"

      (Up-shift)

      		 Below 1 Ω
      A38-27 (SFTD) - Body ground

      Shift lever held in "-"

      (Down-shift)

      		 Below 1 Ω
      A38-38 (SFTU) - Body ground Shift lever in S 10 kΩ or higher
      A38-27 (SFTD) - Body ground Shift lever in S 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR