AUTOMATIC TRANSAXLE SYSTEM Transmission Control Switch Circuit

DESCRIPTION

When the shift lever is in S and it is moved toward "-" or "+", it is possible to select different shift ranges (1st through 6th ranges).

Moving the shift lever toward "+" increases the shift range by one, and moving the shift lever toward "-" decreases the shift range by one.

WIRING DIAGRAM

A011TSRE01

INSPECTION PROCEDURE

Note

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

PROCEDURE

  1. READ VALUE USING TECHSTREAM (SPORT SHIFT SWITCH STATUS)

    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the Techstream on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

    5. In accordance with the display on the Techstream, read the Data List.

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Sports Shift Up SW

      Sport shift up switch status/

      ON or OFF

      • ON: Continuously shift to "+" (up-shift)

      • OFF: Release "+" (up-shift)

      		 -
      Sports Shift Down SW

      Sport shift down switch status/

      ON or OFF

      • ON: Continuously shift to "-" (down-shift)

      • OFF: Release "-" (down-shift)

      		 -
      Result
      Result Proceed to
      Data display is not within Normal Condition range A
      Data display is within Normal Condition range B
    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

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

    1. Disconnect the transmission control switch connector from lower shift lever assembly.

      A011QM5E05

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      l44-4 (IG) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control Switch)
    NG

    CHECK POWER SOURCE CIRCUIT

    OK

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

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

      A011QM5E06
      Standard Resistance
      Tester Connection Condition Specified Condition
      l44-2 (E) - Body ground Always Below 1 Ω
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control Switch)
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH)

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

      A011TDQE01
      Standard Resistance
      Tester Connection Condition Specified Condition
      l44-4 (IG) - l44-5 (S) Shift lever in S, "+" or "-" Below 1 Ω
      Shift lever not in S, "+" or "-" 10 kΩ or higher
      l44-3 (SFTU) - l44-2 (E)

      Shift lever held in "+"

      (Up-shift)

      		 Below 1 Ω
      Shift lever not held in "+" 10 kΩ or higher
      l44-1 (SFTD) - l44-2 (E)

      Shift lever held in "-"

      (Down-shift)

      		 Below 1 Ω
      Shift lever not held in "-" 10 kΩ or higher
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Control Switch)
    NG

    REPLACE LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH) Click here

    OK

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

    1. Connect the transmission control switch connector.

    2. Disconnect the ECM connector.

      A011QN8E04

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A25-27 (S) - Body ground

      • Ignition switch ON

      • Shift lever in S, "+" or "-"

      		 11 to 14 V
      A25-27 (S) - Body ground

      • Ignition switch ON

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

      		 Below 1 V

    5. Turn the ignition switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A25-42 (SFTU) - Body ground

      Shift lever held in "+"

      (Up-shift)

      		 Below 1 Ω
      Shift lever not held in "+" 10 kΩ or higher
      A25-43 (SFTD) - Body ground

      Shift lever held in "-"

      (Down-shift)

      		 Below 1 Ω
      Shift lever not held in "-" 10 kΩ or higher
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)
      Result
      Result Proceed to
      OK A
      NG B
    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE ECM Click here