СИСТЕМА ECD (для моделей с контроллером свечей накаливания) ДАННЫЕ ФИКСИРОВАННОГО НАБОРА ПАРАМЕТРОВ


  1. DESCRIPTION

    The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time of a malfunction.

    Tech Tips

    If it is impossible to duplicate the problem even though a DTC is detected, confirm the freeze frame data.


    • A01T9INE01
      *1 DTC stored
      *2 0.5 seconds
      *3 Freeze frame data recorded

      The ECM records engine conditions in the form of freeze frame data every 0.5 seconds. Using the GTS, 5 separate sets of freeze frame data can be checked.


      • 3 data sets before the DTC was stored.

      • 1 data set when the DTC was stored.

      • 1 data set after the DTC was stored.

    • These data sets can be used to simulate the condition of the vehicle around the time of the occurrence of the malfunction. The data may assist in identifying the cause of the malfunction, and in judging whether it was temporary or not.

  2. LIST OF FREEZE FRAME DATA


    Powertrain > Engine and ECT
    Tester Display Measurement Item Diagnostic Note
    Vehicle Speed Vehicle speed Speed indicated on speedometer
    Engine Speed Engine speed -
    Calculate Load Calculated load by ECM -
    MAF Air flow rate from mass air flow meter -
    Atmosphere Pressure Atmospheric pressure value -
    MAP Absolute pressure inside intake manifold -
    Coolant Temp Engine coolant temperature

    • If -30°C (-22°F) or less, sensor circuit is open

    • If 120°C (248°F) or higher, sensor circuit is shorted
    Intake Air Intake air temperature

    • If -40°C (-40°F), sensor circuit is open

    • If 120°C (248°F) or higher, sensor circuit is shorted
    Intake Air Temp (Turbo) Supported Status of intake air temperature after intercooler supported -
    Intake Air Temp (Turbo) Intake air temperature after intercooler

    • If -30°C (-22°F) or less, sensor circuit is open

    • If 150°C (302°F) or higher, sensor circuit is shorted
    Engine Run Time Engine run time -
    Initial Engine Coolant Temp Initial engine coolant temperature -
    Initial Intake Air Temp Initial intake air temperature -
    Battery Voltage Battery voltage -
    Alternate Duty Ratio Alternator generation duty ratio -
    Pre Glow Pre glow operation -
    After Glow After glow operation -
    Engine Oil Pressure Engine oil pressure value -
    Accel Position Accelerator position status -
    Accel Sens. No.1 Volt % Accelerator position No. 1 -
    Accel Sens. No.2 Volt % Accelerator position No. 2 -
    Target Throttle Position Supported Status of target throttle position supported -
    Target Throttle Position Target throttle position -
    Target Throttle Position #2 Supported Status of target throttle position No. 2 supported -
    Target Throttle Position #2 Target throttle position No. 2 -
    Actual Throttle Position Supported Status of actual throttle position supported -
    Actual Throttle Position Actual throttle position -
    Actual Throttle Position #2 Supported Status of actual throttle position No. 2 supported -
    Actual Throttle Position #2 Actual throttle position No. 2 -
    Throttle Motor DUTY Diesel throttle motor actuator duty -
    Throttle Close Learning Val. Throttle fully closed position learned value -
    Throttle Sensor Volt % Throttle position sensor output voltage -
    Injection Volume Injection volume -
    Injection Feedback Val #1 Injection volume correction for No. 1 cylinder -
    Injection Feedback Val #2 Injection volume correction for No. 2 cylinder -
    Injection Feedback Val #3 Injection volume correction for No. 3 cylinder -
    Injection Feedback Val #4 Injection volume correction for No. 4 cylinder -
    Pilot 1 Injection Period Pilot 1 injection period -
    Pilot 2 Injection Period Pilot 2 injection period -
    Main Injection Period Main injection period -
    After Injection Period After injection period -
    Pilot 1 Injection Timing Pilot 1 injection timing -
    Pilot 2 Injection Timing Pilot 2 injection timing -
    Main Injection Timing Main injection timing -
    After Injection Timing After injection timing -
    Injection Pressure Correction Injection pressure feedback compensation volume -
    Target Common Rail Pressure Supported Status of target common rail pressure supported -
    Target Common Rail Pressure Target common rail pressure -
    Common Rail Pressure Supported Status of common rail pressure supported -
    Common Rail Pressure Common rail pressure -
    Fuel Temperature Supported Status of fuel temperature supported -
    Fuel Temperature Fuel temperature -
    Target Pump SCV Current Pump current target final value -
    Pressure Discharge Valve Pressure control valve operation signal -
    AFS Current B1S1 Air fuel ratio sensor (for sensor 1) current -
    AF Sensor Learning Value Air fuel ratio sensor (for sensor 1) learning value -
    AF Sensor Learning Value B1S2 Air fuel ratio sensor (for sensor 2) learning value -
    Target EGR Valve Pos Supported Status of target EGR valve position supported -
    Target EGR Valve Pos EGR valve target opening angle -
    Target EGR Valve Pos #2 Supported Status of target EGR valve position No. 2 supported -
    Target EGR Valve Pos #2 EGR valve target opening angle No. 2 -
    Actual EGR Valve Pos Supported Status of actual EGR valve position supported -
    Actual EGR Valve Pos EGR valve position -
    Actual EGR Valve Pos #2 Supported Status of actual EGR valve position No. 2 supported -
    Actual EGR Valve Pos #2 EGR valve position No. 2 -
    EGR Position Sensor EGR valve position sensor voltage -
    EGR Motor Duty #1 EGR valve motor duty ratio -
    EGR Close Lrn. Val. EGR fully closed position learned value -
    EGR Operation Prohibit EGR Active Test operation prohibit -
    EGR Cooler Bypass VSV EGR cooler bypass valve VSV operation -
    EGR Cooler Bypass Position EGR cooler bypass valve position -
    Target Booster Pressure Supported Status of target boost pressure supported -
    Target Booster Pressure Target boost pressure -
    VN Turbo Command Supported Status of VN turbo command supported -
    Target VN Turbo Position Target VN turbo position -
    VN Turbo Command #2 Supported Status of VN turbo command No. 2 supported -
    Target VN Turbo Position #2 Target VN turbo position No. 2 -
    Actual VN Position Supported Status of actual VN turbo position supported -
    Actual VN Turbo Position Actual VN turbo position The actual VN turbo position is controlled to reach the target (Target VN Turbo Position).
    Actual VN Position #2 Supported Status of actual VN turbo position No. 2 supported -
    Actual VN Turbo Position #2 Actual VN turbo position No. 2 -
    VN Close Learn Value VN turbocharger closed learning value -
    VN Turbo Max Angle VN turbo maximum opening angle -
    VN Turbo Min Angle VN turbo minimum opening angle -
    Exhaust Temperature B1S1 Supported Status of exhaust gas temperature (bank 1 sensor 1) supported -
    Exhaust Temperature B1S1 Exhaust gas temperature of NSR (NOx Storage Reduction) catalyst

    • If 50°C (122°F), sensor circuit is open

    • If 950°C (1742°F), sensor circuit is shorted
    Exhaust Temperature B1S2 Supported Status of exhaust gas temperature (bank 1 sensor 2) supported -
    Exhaust Temperature B1S2 Exhaust gas temperature of DPF catalyst

    • If 50°C (122°F), sensor circuit is open

    • If 950°C (1742°F), sensor circuit is shorted
    Exhaust Temperature B1S3 Supported Status of exhaust gas temperature (bank 1 sensor 3) supported -
    Exhaust Temperature B1S3 Exhaust gas temperature -
    DPF Differential Pressure Supported Status of DPF differential pressure supported -
    DPF Differential Pressure DPF differential pressure sensor output -
    Catalyst Differential Press Catalyst differential pressure -
    Diff. Press. Sensor Corr. Differential pressure sensor correction -
    DPNR Status Reju (S) Sulfur regeneration status -
    DPNR/DPF Status Reju(PM) PM regeneration status -
    Sulfur Accumulation Ratio Sulfur accumulation ratio -
    PM Accumulation Ratio PM accumulation ratio -
    Starter Signal Starter signal -
    Clutch Switch Clutch switch -
    Stop Light Switch Stop light switch -
    Shift Indication Enable Shift indication enable -
    A/C Signal A/C (Air Conditioner) signal -
    Immobiliser Communication Immobiliser communication -
    ASL Switch Speed limiter switch signal -
    TC Terminal TC terminal status -
    Time after DTC Cleared Time after DTC cleared -
    Distance from DTC Cleared Distance after DTC cleared -
    Warmup Cycle Cleared DTC Warm-up cycle after DTC cleared -
    IG OFF Elapsed Time Time after engine switch off -
    TC and TE1 TC and CG (TE1) terminals of DLC3 -
    Total Distance Traveled Total distance traveled -
    Engine Speed (Starter Off) Engine speed when starter off This is the engine speed immediately after starting the engine.
    Glow Request Lighting Time Indicates the length of time the glow indicator light was on -
    IG-ON Time Elapsed time to start engine after the ignition switch was turned to ON This shows the condition when the glow turn on request occurred. If a malfunction occurred during a cold engine start (below 0°C [32°F]), based on IG-ON Time it can be determined whether the request was made after the glow plug and glow indicator turned off or not.
    MAF Low Status of mass air flow rate low

    This shows that the intake air volume measured by the mass air flow meter was insufficient, resulting in a continuous reduction of injection volume.

    If the intake system is clogged, the pipes are not properly connected, intake air volume is low due to excessive EGR, or the mass air flow meter has deteriorated, the measured intake air volume may be lower than the normal volume.
    Boost Pressure Low Status of boost pressure Low This shows that the boost pressure (turbocharger boost pressure) was less than the target, resulting in a continuous reduction of injection volume.
    Engine Coolant Temp High Status of engine coolant temperature high This shows that there was a continuous reduction of injection volume due to high engine coolant temperature (overheating).
    MAF/Estimate MAF Ratio Mass air flow rate (actual) / mass air flow rate (estimated) value This shows the calculated intake air volume based on the intake air volume measured by the mass air flow meter, manifold pressure and intake air temperature.
    Rough Idle #1 Status of No. 1 cylinder rough idle This shows that the idle speed of this cylinder is lower than the other cylinder.
    Rough Idle #2 Status of No. 2 cylinder rough idle This shows that the idle speed of this cylinder is lower than the other cylinder.
    Rough Idle #3 Status of No. 3 cylinder rough idle This shows that the idle speed of this cylinder is lower than the other cylinder.
    Rough Idle #4 Status of No. 4 cylinder rough idle This shows that the idle speed of this cylinder is lower than the other cylinder.
    Engine Starting Time Time elapsed before engine starts (after starter turns on until engine speed reaches 400 rpm) -
    Engine Start Hesitation History of hesitation during engine start -
    Low Rev for Eng Start History of low engine speed after engine start -
    ACT VSV A/C cut status for Active Test -
    Electric Fan Motor Electric fan motor operation -
    Brake Override System Brake override system status -
    Immobiliser Fuel Cut History Status of immobiliser fuel cut If this item was ON when DTC P1604 was detected, this means that the engine could not start due to immobiliser operation.
    Electrical Load Signal 1 Electrical load signal -
    Electrical Load Signal 2 Electrical load signal -
    Shift SW Status (R Range) Back-up light switch status -
    MT Down Shift Indication Manual transmission shift down indication -
    MT Up Shift Indication Manual transmission shift up indication -
    Stop&Start of Eng State Engine status of stop and start system -