AUTOMATIC TRANSAXLE SYSTEM (for 1AZ-FE) Transmission Control Switch Circuit

DESCRIPTION

After moving the shift lever to S, it is possible to switch the range between "1" (S1 range) and "4" (S4 range) using the transmission control switch.

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

WIRING DIAGRAM

A005SNQE02

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT TRANSMISSION CONTROL SWITCH


    1. A005UG3E03
      Text in Illustration
      *1

      Component without harness connected

      (Transmission Control Switch)

      Disconnect the D49 transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (IG) - 13 (S) Shift lever in S, "+" or "-" Below 1 Ω
      5 (SFTU) - 11 (E) Shift lever held in "+" (Up-shift) Below 1 Ω
      4 (SFTD) - 11(E) Shift lever held in "-" (Down-shift) Below 1 Ω
      6 (IG) - 13 (S) Shift lever not in S, "+" or "-" 10 kΩ or higher
      5 (SFTU) - 11 (E) Shift lever in S 10 kΩ or higher
      4 (SFTD) - 11 (E) Shift lever in S 10 kΩ or higher

    NG

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

    OK

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


    1. A005UUXE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Transmission Control Switch)

      Disconnect the D49 transmission control switch connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D49-6 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      D49-6 (IG) - Body ground Engine switch off Below 1 V

    3. Turn the engine switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D49-11 (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. A005TGNE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to ECM)

      Disconnect the A40 and B39 ECM connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      B39-74 (S) - Body ground

      • Engine switch on (IG)

      • Shift lever in S, "+" or "-"

      		 11 to 14 V
      B39-74 (S) - Body ground

      • Engine switch on (IG)

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

      		 Below 1 V

    3. Turn the engine switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A40-16 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω
      A40-51 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω
      A40-16 (SFTU) - Body ground Shift lever in S 10 kΩ or higher
      A40-51 (SFTD) - Body ground Shift lever in S 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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