AUTOMATIC TRANSMISSION SYSTEM(for 1UR-FE) Pattern Select Switch Power Mode Circuit

DESCRIPTION

The ECM memory contains the programs for the normal and power shift patterns and lock-up pattern.

By following the programs corresponding to the signals from the PWR switch (integration control and panel assembly), the park/neutral position switch and other various sensors, the ECM switches the solenoid valves on and off, and controls the transmission gear change and the lock-up clutch operation.

WIRING DIAGRAM

A01X4YXE04

CAUTION / NOTICE / HINT

When the PWR switch is pushed, switch contact is made and power mode is selected. To cancel power mode, push the PWR switch once again.

PROCEDURE


  1. INSPECT PWR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)


    1. B001YZQE17
      Text in Illustration
      *a

      Component without harness connected

      (Integration Control and Panel Assembly)

      Remove the integration control and panel assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (P) - 5 (E) PWR switch on Below 1 Ω
      6 (P) - 5 (E) PWR switch off 10 kΩ or higher

    NG

    REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BODY GROUND)


    1. A01XBA7E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Integration Control and Panel Assembly)

      Disconnect the integration control and panel assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V9-5 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - ECM)

    A01X17ZE01
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *a

    Front view of wire harness connector

    (to ECM)

    1. Disconnect the ECM connector.

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

      Standard Resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      A38-51 (PWR) - Body ground PWR switch on Below 1 Ω
      A38-51 (PWR) - Body ground PWR switch off 10 kΩ or higher
      for RHD
      Tester Connection Switch Condition Specified Condition
      A52-51 (PWR) - Body ground PWR switch on Below 1 Ω
      A52-51 (PWR) - Body ground PWR switch off 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR