AUTOMATIC TRANSMISSION SYSTEM L4 Position Switch Circuit

DESCRIPTION

The No. 1 transfer indicator switch (L4 position switch) detects the gear position of the transfer shift lever.

Moving the transfer shift lever to L4 turns the L4 position switch ON. Then the ECM cancels operation of the lock-up clutch.

WIRING DIAGRAM

A01DVCAE04

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK WIRE HARNESS (NO. 1 TRANSFER INDICATOR SWITCH - BODY GROUND)


    1. A01E1RVE04

      Disconnect the T4 switch connector.

    2. Measure the resistance of the wire harness side connector.

      Standard resistance
      Tester Connection Condition Specified Condition
      T4-2 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  2. INSPECT NO. 1 TRANSFER INDICATOR SWITCH (L4 POSITION SWITCH)


    1. A01E01JE11

      Remove the transfer indicator switch.

    2. Measure the resistance of the switch when pushing the ball at the tip of the switch.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2 Not pushed 10 kΩ or higher
      1 - 2 Pushed Below 1 Ω

    NG

    REPLACE NO. 1 TRANSFER INDICATOR SWITCH

    OK

  3. CHECK WIRE HARNESS (NO. 1 TRANSFER INDICATOR SWITCH - ECM)


    1. A01DY5ZE02

      Disconnect the T4 switch connector.

    2. Disconnect the E9 ECM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Condition Specified Condition
      E9-11 (L4) - T4-1 Always Below 1 Ω
      E9-11 (L4) or T4-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    REPLACE ECM