AUTOMATIC TRANSMISSION SYSTEM (for 1GR-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 pattern select switch, 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

A0157P4E09

INSPECTION PROCEDURE

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

PROCEDURE


  1. INSPECT PATTERN SELECT (PWR) SWITCH


    1. A015BGVE06
      Text in Illustration
      *a

      Component without harness connected

      (Suspension Control Switch)

      Remove the suspension control switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      16 (P) - 20 (E) Pattern select (PWR) switch on Below 1 Ω
      16 (P) - 20 (E) Pattern select (PWR) switch off 10 kΩ or higher

    NG

    REPLACE PATTERN SELECT (PWR) SWITCH (SUSPENSION CONTROL SWITCH) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (PATTERN SELECT (PWR) SWITCH - BODY GROUND)


    1. A0159U1E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Suspension Control Switch)

      Disconnect the suspension control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V4-20 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (PATTERN SELECT (PWR) SWITCH - ECM)

    A015CSFE40
    Text in Illustration
    *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
      Tester Connection Switch Condition Specified Condition
      A38-51 (PWR) - Body ground Pattern select (PWR) switch on Below 1 Ω
      A38-51 (PWR) - Body ground Pattern select (PWR) switch off 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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