AUTOMATIC TRANSMISSION SYSTEM Pattern Select Switch Sport Mode Circuit

DESCRIPTION

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

By following the programs corresponding to the signals from the combination 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

A01FHHUE02

INSPECTION PROCEDURE

When the combination switch (SPORT) is turned, switch contact is made and sport mode is selected. To cancel sport mode, push the combination switch (NORMAL) once again.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - BODY GROUND)


    1. Disconnect the connector of combination switch.

    2. A01FIU2E37
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Switch Assembly)

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

      Standard resistance
      Tester Connection Specified Condition
      N59-4 (GND) - Body ground Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT COMBINATION SWITCH ASSEMBLY


    1. A01FI2OE01
      Text in Illustration
      *1

      Component without harness connected

      (Combination Switch Assembly)

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      7 - 4 Mode switch being turned and held at SPORT position Below 10 Ω
      ↑ Mode switch not turned 10 kΩ or higher
      3 - 4 Mode switch being pushed and held Below 10 Ω
      ↑ Mode switch not pushed 10 kΩ or higher

    NG

    REPLACE COMBINATION SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - ECM)


    1. A01FFQHE01
      Text in Illustration
      *A w/ Adaptive Variable Suspension
      *B w/o Adaptive Variable Suspension
      *1

      Rear view of wire harness connector

      (to ECM)

      Connect the connector of combination switch.

    2. Disconnect the ECM connector.

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

      Standard resistance
      w/ Adaptive Variable Suspension
      Tester Connection Switch Condition Specified Condition
      A19-16 (SPSW) - Body ground Mode switch being turned and held at SPORT position Below 10 Ω
      ↑ Mode switch not turned 10 kΩ or higher
      A21-25 (SPCN) - Body ground Mode switch being pushed and held Below 10 Ω
      ↑ Mode switch not pushed 10 kΩ or higher
      w/o Adaptive Variable Suspension
      Tester Connection Switch Condition Specified Condition
      A21-23 (PWR) - Body ground Mode switch being turned and held at SPORT position Below 10 Ω
      ↑ Mode switch not turned 10 kΩ or higher
      A21-25 (SPCN) - Body ground Mode switch being pushed and held Below 10 Ω
      ↑ Mode switch not pushed 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here