CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 8NR-FTS) DIAGNOSIS SYSTEM

  1. EURO-OBD (EUROPEAN SPEC)

    F102324

    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 vehicle's ECM can then be read.

    2. Euro-OBD regulations require that the vehicle's 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 stored in the ECM memory. If the malfunction does not reoccur in 3 consecutive trips, the MIL turns off automatically but the DTCs remain stored in the ECM memory.

    3. To check for DTCs, connect the GTS or OBD scan tool to the Data Link Connector 3 (DLC3) of the vehicle.

      The scan tool displays DTCs, the freeze frame data and a variety of engine data.

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

      Click here

  2. NORMAL MODE AND CHECK MODE (GTS Only)

    1. 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.

  3. 2-TRIP DETECTION LOGIC

    1. When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). If the same malfunction is detected during the subsequent driving cycle, the MIL is illuminated (2nd trip).

  4. 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.

  5. LIST OF FREEZE FRAME DATA

    Powertrain > Transmission

    Tester Display

    Total Distance Traveled

    Total Distance Traveled - Unit

    Vehicle Speed

    Engine Speed

    Calculate Load

    Coolant Temperature

    Intake Air Temperature

    Ambient Temperature

    Engine Run Time

    Battery Voltage

    BATT Voltage

    Glow Indicator Supported

    Throttle Position Sensor No.1 Voltage %

    Starter SW

    Neutral Position SW

    Stop Light SW

    Cruise Main SW

    TC Terminal

    MIL ON Run Distance

    Running Time from MIL ON

    Time after DTC Cleared

    Distance from DTC Cleared

    Warmup Cycle Cleared DTC

    Accel Position from EFI

    NT Sensor Speed

    NIN Sensor Speed

    NOUT Sensor Speed

    NOUT Sensor Voltage

    Belt Clamping Force Sensor

    Shift SW Status (P Range)

    Shift SW Status (R Range)

    Shift SW Status (N Range)

    Shift SW Status (N,P Range)

    Shift SW Status (N,P Range) Supported

    Shift SW Status (S Range)

    Shift SW Status (D Range)

    A/T Oil Temperature No.1

    ATF Thermal Degradation Estimate

    CVT Oil Press Calibration

    NT Sensor Voltage

    Lock Up Status

    CVT Shift Status Ratio

    Solenoid (SLU)

    Solenoid (SLS) High/Low

    Solenoid (SLS) MAX/MIN

    Solenoid (SLP)

    Solenoid (SL)

    Solenoid (SC)

  6. DATA LINK CONNECTOR 3 (DLC3)

    1. Check the DLC3.

      Click here

  7. BATTERY VOLTAGE

    Standard Voltage

    11 to 14 V

    If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

  8. MIL (Malfunction Indicator Lamp)

    1. The MIL is illuminated when the ignition switch is turned to ON (with the engine not running).

      If the MIL does not illuminate, check the MIL circuit.

      Click here

    2. The MIL will turn off when the engine is started. If the MIL remains illuminated, the diagnosis system has detected a malfunction or abnormality in the system.