ECD SYSTEM(w/ Glow Plug Controller) FREEZE FRAME DATA

  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.

    Tip:

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

    • A286045E01

      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

    -