Vehicle Control History [12/2019 - 10/2022]

• Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
• If the customer states that the engine stalled or will not start, it may be possible to diagnose the cause of the malfunction by checking the vehicle history information and Freeze Frame Data.
• The number of possible stored Freeze Frame Data sets, whether multi Freeze Frame Data is available, the number of freeze frame points, Freeze Frame Data items, the ECU internal range, etc., is different depending on the stored group.

• As Vehicle Control History may be overwritten whenever the trigger conditions are met, make sure to save Vehicle Control History before performing any inspections.
• As Vehicle Control History may be stored when performing an Active Test, learning, etc., make sure to clear the Vehicle Control History before returning the vehicle to the customer.

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Enter the following menus: Powertrain / Engine / Utility / Vehicle Control History (RoB).

   Powertrain > Engine > Utility 

   Tester Display
   Vehicle Control History (RoB)

   VEHICLE CONTROL HISTORY ITEM
   
   

   Code	Tester Display	Measurement Item	Diagnostic Note
   X0600	Auxiliary Battery Voltage Low at Start	History of low battery voltage at engine control system start	-
   X0601	Auxiliary Battery Voltage Low at IG OFF	History of low battery voltage when ignition switch off	-
   X0602	Auxiliary Battery Discharge at IG OFF	History of battery becoming discharged when ignition switch off	-
   X0603	Auxiliary Battery Discharge at Running	History of battery becoming discharged while vehicle being driven	-

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Enter the following menus: Powertrain / Engine / Utility / Vehicle Control History (RoB) / Clear.
   NOTE:

   By performing this procedure, all stored Vehicle Control History items will be cleared.

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Enter the following menus: Powertrain / Engine / Utility / Vehicle Control History (RoB).

   Powertrain > Engine > Utility 

   Tester Display
   Vehicle Control History (RoB)

5. Select a Vehicle Control History item to access the applicable Freeze Frame Data.
6. Check the Freeze Frame Data recorded with the Vehicle Control History.
   VEHICLE CONTROL HISTORY DATA
   
   

   GTS Display	Description
   Total Distance Traveled	Driving distance
   Total Distance Traveled - Unit	Unit of driving distance
   Initial Engine Battery Minimum Voltage	Minimum voltage at engine start
   Alternator Voltage - Non Active Test	Requested voltage when the regulator forced operation is not executed
   Alternator Output Duty Ratio	LIN terminal output (power generation rate)
   Auxiliary Battery Voltage	Battery voltage (+B1, +B2 terminal)
   Auxiliary Battery Integrated Current	Battery capacity taking into account battery deterioration.
   Smoothed Value of Auxiliary Battery Temperature	Calculated battery fluid temperature by battery state sensor assembly
   Auxiliary Battery Charge Rate	Battery charge percentage calculated by battery state sensor assembly
   Auxiliary Battery Charging Rate Accuracy	Accuracy of battery charge percentage calculated by battery state sensor assembly
   Auxiliary Battery Charging Capacity	Charge of battery calculated by battery state sensor assembly
   Charging Control Mode	Charging control state
   Average Vehicle Speed during Trip	Average vehicle speed after engine started during current trip
   Auxiliary Battery Integrated Current during Trip	Integrated current of battery detected by battery state sensor assembly during current trip
   Auxiliary Battery Charging Integrated Current when Trip before Last	Integrated current charged during the previous trip
   Auxiliary Battery Discharging Integrated Current when Trip before Last	Integrated current discharged during the previous trip
   Auxiliary Battery Capacity after IG ON	Battery capacity immediately after ignition switch turned to ON
   Auxiliary Battery Capacity after IG OFF	Battery capacity immediately after ignition switch turned off
   Estimated Open Ended Auxiliary Battery Voltage when IG OFF	Estimated battery release voltage calculated when ignition switch is off by the battery state sensor assembly
   Auxiliary Battery Average Current during IG OFF	Average current while parked (average value of current consumed from when the ignition switch is off until lit is ON)
   IG OFF Time just before IG ON	Parking duration (duration from when the ignition switch is off until it is ON)
   Auxiliary Battery Average Current when Auxiliary Battery Voltage Low (during IG OFF)	Average current when system judges that voltage is low while parked (average current value when the ignition switch is off until the system judges the voltage is low while parked)
   IG OFF Time when Auxiliary Battery Voltage Low (during IG OFF)	Parking duration when system judges that voltage is low while parked (duration from when the ignition switch is off until the system judges the voltage is low while parked)
   Elapsed Time during Auxiliary Battery Voltage Low	Elapsed time that battery voltage detected by battery state sensor assembly was below threshold
   Average Engine Speed	Average engine speed after engine starts during the current trip

HINT: 

A part of the control history can be confirmed using the vehicle control history.

Refer to VEHICLE CONTROL HISTORY [12/2019 - 11/2023]