Sfi System Diagnosis System

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Tr-Fbe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. DESCRIPTION

  1. NORMAL MODE AND CHECK MODE

  1. 2 TRIP DETECTION LOGIC

  1. FREEZE FRAME DATA

  1. INSPECT BATTERY VOLTAGE

  1. CHECK MIL

  1. ALL READINESS

Sfi System -- Diagnosis System


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION
When troubleshooting OBD II (On-Board Diagnostics) vehicles, the OBD scan tool (complying with ISO 15765-4) must be connected to the DLC3 (Data Link Connector 3) of the vehicle. Various data in the vehicle's ECM (Engine Control Module) can then be read.
OBD II regulations require that the vehicle's on-board computer illuminate the MIL (Malfunction Indicator Lamp) on the instrument panel when the computer detects a malfunction in:

  1. The emission control system components

  2. The powertrain control components which affect vehicle emissions

  3. The computer
    In addition, the applicable DTCs prescribed by SAE J2012 are stored in the ECM memory. If the malfunction does not recur in 3 consecutive trips, the MIL turns off automatically but the DTCs remain stored in the ECM memory.
    To check DTCs, connect the intelligent tester 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 (HILUX_TGN26 RM000000PDK12LX.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 to technicians as an option. In check mode, "1 trip detection logic" is used to increase the ability of the system to detect malfunctions, including intermittent malfunctions, when reproducing malfunction conditions (HILUX_TGN26 RM000000PDL0LAX.html).

2 TRIP DETECTION LOGIC
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 driving cycle, the MIL is illuminated (2nd trip).

FREEZE FRAME DATA
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.

INSPECT BATTERY VOLTAGE
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
Battery voltage:
11 to 14 V

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 (HILUX_TGN26 RM000000WZ10Z6X.html).

  2. Check that when the engine is started, the MIL turns off.


ALL READINESS
HINT:
  1. With "All Readiness", it is possible to check whether or not the DTC judgment has been completed by using the intelligent tester.
  2. Check "All Readiness" after reproducing malfunction conditions or for validation after finishing repairs.

  1. Connect the intelligent tester to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the tester on.

  4. Clear the DTCs.

  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.

    DTC Judgment Result
    Tester 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