Sfi System Diagnosis System

  1. EURO-OBD (EUROPEAN SPEC.)

  1. NORMAL MODE AND CHECK MODE

  1. 2 TRIP DETECTION LOGIC

  1. FREEZE FRAME DATA

  1. BATTERY VOLTAGE

  1. MIL (Malfunction Indicator Lamp)

  1. ALL READINESS

Sfi System -- Diagnosis System



EURO-OBD (EUROPEAN SPEC.)
When troubleshooting Europe On-Board Diagnostic (Euro-OBD) vehicles, the vehicle must be connected to an OBD scan tool (complying with ISO 15765-4). Various data output from the vehicle's ECM can then be read.
Euro-OBD regulations require that the vehicle's on-board computer illuminates the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in:

  1. The emission control system components.

  2. The powertrain control components (which affects vehicle emissions).

  3. 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.
    To check DTCs, connect the GTS or OBD scan tool to the Data Link Connector 3 (DLC3) of the vehicle.
    The DTCs and freeze frame data can be cleared using the scan tool (LandCruiser RM000000PDK1DIX.html).


NORMAL MODE AND CHECK MODE
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 as an option for technicians. In check mode, 1 trip detection logic is used for simulating malfunction symptoms and increasing the ability of the system to detect malfunctions, including intermittent problems (GTS only).

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 next subsequent drive cycle, the MIL is illuminated (2nd trip).

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, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

BATTERY VOLTAGE
Standard voltage:
11 to 14 V
  1. If the voltage is below 11 V, replace or recharge the battery before proceeding.

MIL (Malfunction Indicator Lamp)

  1. The MIL is illuminated when the engine switch is first turned on (IG) (the engine is not running).

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

    HINT:
    If the MIL is not illuminated when the engine switch is first turned on (IG), check the MIL circuit (LandCruiser RM000000WZ11A7X.html).

ALL READINESS
HINT:
  1. With "All Readiness", you can check whether or not the DTC judgment has been completed by using the GTS.
  2. Check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.

  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (LandCruiser RM000000PDK1DIX.html).

  5. Perform the DTC judgment driving pattern to run the DTC judgment.

  6. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  7. Input the DTCs to be confirmed.

  8. Check the DTC judgment result.

    Result
    GTS Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit