CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM DIAGNOSIS SYSTEM

  1. EURO-OBD

    1. When troubleshooting Europe On-Board Diagnostic (Euro-OBD) vehicles, an OBD scan tool (complying with ISO 15765-4) must be connected to the vehicle. Various data output from the ECM can then be read.

    2. C201372

      Euro-OBD regulations require that the vehicle on-board computer illuminate the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in any of the following:

      • The emission control system/components

      • The powertrain control components (which affect vehicle emissions)

      • The computer

      In addition, the applicable Diagnostic Trouble Codes (DTCs) prescribed by ISO 15765-4 are recorded in the ECM memory.

      If the malfunction does not recur in 3 consecutive trips, the MIL goes off automatically but the DTCs remain recorded in the ECM memory.

    3. To check DTCs, connect the GTS or OBD scan tool to the Data Link Connector 3 (DLC3) of the vehicle. The scan tool displays DTCs, freeze frame data and a variety of engine data.

      The DTCs and freeze frame data can be cleared with the scan tool.

      Click here

  2. M-OBD (EXCEPT EUROPEAN SPECIFICATION)

    1. When troubleshooting Multiplex On-Board Diagnostic (M-OBD) vehicles, the GTS must be connected to the vehicle. Various data output from the ECM can then be read.

    2. C201372

      OBD regulations require that the vehicle on-board computer illuminate the MIL on the instrument panel when the computer detects a malfunction in any of the following:

      • The emission control system/components

      • The powertrain control components (which affect vehicle emissions)

      • The computer

      In addition, the applicable Diagnostic Trouble Codes (DTCs) prescribed by ISO 15765-4 are recorded in the ECM memory.

      If the malfunction does not recur in 3 consecutive trips, the MIL goes off automatically but the DTCs remain recorded in the ECM memory.

  3. NORMAL MODE AND CHECK MODE

    GTS only:

    The diagnosis system operates in normal mode during normal vehicle use. In normal mode, 2-trip detection logic is used to ensure accurate detection of malfunctions. Check mode is also available to technicians as an option. In check mode, 1-trip detection logic is used when reproducing malfunction symptoms for increasing the ability of the system to detect malfunctions, including intermittent malfunctions.

  4. 2-TRIP DETECTION LOGIC

    1. When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). If the ignition switch is turned off and then turned to ON again, and the same malfunction is detected again, the MIL illuminates.

  5. FREEZE FRAME DATA

    1. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not and whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

    2. C140837E08

      The GTS displays freeze frame data recorded at five different points: 1) 3 times before the DTC is stored, 2) once when the DTC is stored, and 3) once after the DTC is stored. The data can be used to reproduce the vehicle condition around the time of the malfunction. The data may be helpful in determining the cause of a malfunction. It may also be helpful in determining whether a DTC is being caused by a temporary malfunction.

  6. CHECK DATA LINK CONNECTOR 3 (DLC3)

    Click here

  7. CHECK BATTERY VOLTAGE

    Standard Voltage

    11 to 14 V

    If the voltage is below 11 V, replace the battery before proceeding.

  8. CHECK MIL

    1. Check that the MIL illuminates when the ignition switch is turned to ON.

      If the MIL does not illuminate, there is a problem in the MIL circuit.

      for 1ZR-FE:Click here

      for 2ZR-FE:Click hereClick here

    2. When the engine is started, the MIL goes off.