AUTOMATIC TRANSAXLE SYSTEM Transmission Control Switch Circuit

DESCRIPTION

When moving the shift lever into the S position using the transmission control switch, it is possible to switch the shift range position between "1" (first range) and "4" (fourth range).

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

WIRING DIAGRAM

A01EUH4E06

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01ETWKE01
      Text in Illustration
      *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 Connection Switch Condition Specified Condition
      I44-4 (IG) - Body ground IG switch ON 11 to 14 V
      IG switch OFF Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01ETWKE07
      Text in Illustration
      *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
      I44-2 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01EV2FE12
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Control Switch)

      Measure resistance between each terminal.

      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      I44-4 (IG) - I44-5 (S) Shift lever in S, "+" and "-" Below 1 Ω
      Shift lever not in S, "+" and "-" 10 kΩ or higher
      I44-3 (SFTU) - I44-2 (E)

      Shift lever held in "+"

      (Up shift)

      		 Below 1 Ω
      Shift lever held in S 10 kΩ or higher
      I44-1 (SFTD) - I44-2 (E)

      Shift lever held in "-"

      (Down shift)

      		 Below 1 Ω
      Shift lever held in S 10 kΩ or higher

    NG

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

    OK

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


    1. Connect the transmission control switch connector of shift lock control unit assembly.

    2. Disconnect the ECM connector.

    3. A01EWVGE18
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Turn the ignition switch to ON, 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 Condition Specified Condition
      E83-74 (S) - Body ground Shift lever in S, "+" and "-" 11 to 14 V
      Shift lever not in S, "+" and "-" Below 1 V

    4. Turn the ignition switch off.

    5. A01EV7SE70
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM 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 (Check for short)
      Tester Connection Condition Specified Condition
      A74-16 (SFTU) - Body ground

      Press continuously

      "+"

      (Up shift)

      		 Below 1 Ω
      S 10 kΩ or higher
      A74-51 (SFTD) - Body ground

      Press continuously

      "-"

      (Down shift)

      		 Below 1 Ω
      S 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here