AUTOMATIC TRANSAXLE SYSTEM Pattern Select Switch Sport Mode Circuit

DESCRIPTION

The TCM memory contains the programs for the normal and sport shift patterns.

By following the programs corresponding to the signals from the combination switch assembly, park/neutral position switch and other various sensors, the TCM switches the shift solenoid valves on and off, and controls the transaxle gear ratio.

WIRING DIAGRAM

B002A97E01
*a Combination Switch
*b CAN Communication Line

CAUTION / NOTICE / HINT

Tech Tips


  • Refer to the inspection procedure for the CAN communication system.

  • If the CAN communication malfunctions, the TCM cannot receive current data from the ECM. In this case, the freeze frame data output from the TCM has not been updated, so the data will not be useful for the inspection. However, reading the Data List as the first step in troubleshooting is an effective way to find malfunctions.

  • The malfunctioning area can be confirmed using the Bus Check function of the GTS.

    for LHD with Central Gateway ECU:

    Click here

    for RHD with Central Gateway ECU:

    Click here

    for LHD without Central Gateway ECU:

    Click here

    for RHD without Central Gateway ECU:

    Click here

PROCEDURE


  1. INSPECT COMBINATION SWITCH ASSEMBLY


    1. B002A7KC01
      *1 Combination Switch Assembly

      Remove the combination switch assembly.

      Click here

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (MSW1) - 4 (MSW2) Combination switch (SPORT) on Below 1 Ω
      2 (MSW1) - 4 (MSW2) Combination switch (SPORT) off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE COMBINATION SWITCH ASSEMBLY Click here

    OK

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


    1. B0029UOC03
      *a

      Front view of wire harness connector

      (to Combination Switch Assembly)

      Disconnect the combination switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G60-4 (MSW2) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. B00297BC07
      *a

      Front view of wire harness connector

      (to ECM)

      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
      A61-36 (PWMS) - Body ground Combination switch (SPORT) on Below 1 Ω
      A61-36 (PWMS) - Body ground Combination switch (SPORT) off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR