AUTOMATIC TRANSMISSION SYSTEM CHECK MODE PROCEDURE

Tech Tips

Check mode has a higher sensitivity to malfunctions and can detect malfunction that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1-trip detection logic.


  1. DTC CHECK (CHECK MODE)

    Tech Tips

    GTS only: Compared to the normal mode, the check mode is more sensitive for detecting malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.


    1. Procedure for Check Mode using the GTS.


      1. Check the initial conditions.


        • Battery positive voltage 11 V or more

        • Throttle valve fully closed

        • Transmission in the P or N position

        • A/C switch is off

      2. Turn the engine switch off.

      3. Connect the GTS to the DLC3.

      4. A01FIGOE17

        Turn the engine switch on (IG) and turn the GTS main switch ON.

      5. Enter the following menus: Powertrain / Engine and ECT / Utility / Check Mode.

        Note

        All DTCs and freeze frame data recorded will be erased if: 1) GTS is used to change the ECM from normal mode to check mode or vice-versa; or 2) during check mode, the engine switch is turned from the on (IG) to on (ACC) or turned OFF.

      6. Start the engine (the MIL goes off after the engine starts).

      7. Perform "MONITOR DRIVE PATTERN" for the ECT test Click here, or simulate the conditions of the malfunction described by the customer.

        Note

        Leave the engine switch on (IG) until you have checked the DTCs, etc.

      8. After simulating malfunction conditions, use the GTS diagnosis selector to check the DTCs and freeze frame data, etc.

      9. When you use GTS: Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

      10. After checking the DTC, inspect the applicable circuit.

      11. Click here to confirm the details of the DTCs.

  2. DTC CLEAR


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS main switch ON.

    3. When you use GTS: Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Clear.

      Tech Tips

      When operating GTS to erase the codes, the DTCs and freeze frame data will be erased. (See the GTS instruction book for operating instructions.)