VEHICLE CONTROL HISTORY (FC CONTROL SYSTEM)
Note
If the electric motor power decreased or hydrogen filling was canceled due to factors other than vehicle malfunctions (DTCs were set), such factors are recorded in the vehicle control history.
The vehicle control history stores freeze frame data for decreases of the motor power or cancelation of filling and the cumulative number of such events, in accordance with each of the following items.
Tech Tips
By referring to the freeze frame data recorded in the vehicle control history, it helps identify factors that caused the motor power to decrease or canceled filling.
Customer vehicle operations or vehicle drive conditions may cause the vehicle control history to be activated. Even if stored information was found in the vehicle control history, the vehicle is not in need of repairs unless the customer experienced power decreases or filling cancelation. Clear the vehicle control history and return the vehicle to the customer.
Check Vehicle Control History
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / FC / Utility / Vehicle Control History.
Check Vehicle Control History.
| Tester Display |
|---|
| Vehicle Control History |
Clear Vehicle Control History
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / FC / Utility / Vehicle Control History.
Press the "Clear key" at the bottom left of the screen.
Tech Tips
Clear Vehicle Control History will only clear the Vehicle Control History. To clear DTCs, refer to the DTC Check / Clear
| FFD Group | Code | GTS Display | Possible Cause | Action to be Taken |
|---|---|---|---|---|
| 01 | X3000 | Hydrogen Filling Abort |
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Explain the customer that hydrogen filling may be canceled if the hydrogen tank internal pressure exceeds a specified level or a hydrogen tank internal temperature temporarily increases while the tank is refilled. If such happens, fill the tank again after a certain time interval, or at a different hydrogen station. |
| 01 | X3100 | FC Output Limit |
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. |
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that the electric motor power needs to be temporarily limited in order to control the FC system properly. | |||
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Explain the customer that activation of the FC system is limited due to frozen components if an ambient temperature is below 0°C when the FC system is started. *2 | |||
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Explain to the customer that it may take additional time for the READY light to change from blinking to illuminated after performing the READY ON operation (pressing the power switch while stepping on the brake pedal) when the ambient temperature is below 0°C, due to the time needed to thaw frozen components. | |||
| 01 | X3110 | Hydrogen Empty Low Level*1 |
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Explain the customer that the FC system may halt if the hydrogen tank internal pressure has decreased to the minimum pressure level (ran out of fuel). If the FC system cannot be activated even if the hydrogen tank is refilled, it is suspected that tank shut valves 1 and 2 have stuck closed. |
| 01 | X3120 | FC Stack Power Generation Canceled by Poor Drainage |
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Explain the customer that leaving the vehicle in READY ON in a location with a large sideways tilt caused the system to detect "poor drainage", resulting in FC system shutdown. After moving the vehicle to a flat location, stopping the vehicle in a horizontal orientation and waiting for approximately 5 minutes or more, the FC system can be started. After starting the FC system, press the FC water release switch to perform forced drainage. |
*1: FC system stopped (Mode enters EV drive mode, and travel distance will be limited)
*2: In order to identify the vehicle situation, it is helpful to save the data of "FC Output Limit" of the vehicle control history, and interview the customer about the time and distance travelled when they used the vehicle the last time, as well as the gradient of a parking area.
As for parking conditions, an indoor, not very cold and level area is recommended. (It is preferable that the vehicle is parked in a space where an ambient temperature remains above 10 °C (50 °F) overnight)
*3: "Low Temperature Mode" is 0, which means no components have frozen, and if it is not 0, which indicates that there are frozen components.
*4: When the vehicle is tilted to the side by approximately 15° or more, poor drainage may result.
Vehicle Control History Freeze Frame Data (FC Control System)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / FC / Utility / Vehicle Control History.
Select a vehicle control history item to access the applicable freeze frame data.
Check the freeze frame Data recorded with the Vehicle Control History.
Tech Tips
If the items are the same as the data list items, refer to the data list items.
| Tester Display | Measurement Item |
|---|---|
| Hydrogen Tank 1 Temperature | Hydrogen temperature in the No. 1 hydrogen tank assembly |
| Hydrogen Tank 2 Temperature | Hydrogen temperature in the No. 2 hydrogen tank assembly |
| Hydrogen Filling System High Pressure | Refer to Data List |
| Hydrogen Remaining | |
| Smoothed Value of Barometric Pressure | |
| Smoothed Value of FC Stack Air Pressure (FC Stack Inlet) | |
| Target FC Stack Air Pressure (FC Stack Inlet) | |
| Mass Air Flow Value | |
| Target Mass Air Flow Value | |
| Smoothed Value of FC Stack Air Temperature (FC Stack Inlet) | |
| Smoothed Value of Intake Air Temperature | |
| Air Compressor Motor Temperature | |
| Air Compressor Inverter Temperature | |
| Target Air Pressure Regulating Valve Position | |
| Target Air Shunt Valve Position | |
| FC Limited Current (Air Compressor) | Electrical current of the FC stack power supply when the FC air compressor output is limited due to a shutdown request from the inverter. |
| Target Air Compressor Revolution | Refer to Data List |
| Air Compressor Revolution | |
| Tank Shut Valve 1 Driving Request | |
| Tank Shut Valve 2 Driving Request | |
| Hydrogen Empty Low Level | |
| EV Battery Low SOC | |
| Smoothed Value of High-range Hydrogen Pressure | |
| Smoothed Value of Medium-range Hydrogen Pressure | |
| Smoothed Value of Low-range Hydrogen Pressure | |
| Smoothed Value of Hydrogen Tank 1 Temperature | |
| Smoothed Value of Hydrogen Tank 2 Temperature | |
| Smoothed Value of Hydrogen Pump Motor Temperature | |
| Hydrogen Pump Consumption Power | |
| Target Low-range Hydrogen Pressure | |
| Hydrogen Pump Revolution | |
| Target Hydrogen Pump Revolution | |
| Hydrogen Injector Injection Number | |
| Hydrogen Remaining | |
| FC Limited Current (Low-range Hydrogen Pressure Low) | Electrical current of the FC stack power supply, which is limited due to low hydrogen pressure |
| FC Limited Current (Hydrogen Empty Low Level) | Electrical current of the FC stack power supply, which is limited due to low hydrogen in the hydrogen tank |
| FC Limited Current (Hydrogen Leak) | Electrical current of the FC stack power supply, which is limited due to DTCs relating to hydrogen leakage |
| FC Stack Cell Average Minimum Voltage | Refer to Data List |
| FC Stack Cell Minimum Voltage | |
| FC Stack Cell Minimum Average Voltage Cell Channel No | |
| FC Stack Cell Minimum Voltage Cell Channel No | |
| FC Total Voltage | |
| Accelerator Degree | |
| Shift Sensor Shift Position | |
| Vehicle Speed | |
| Vehicle Tilt Angle (Horizontal Direction) | Tilt angle in the lateral (left-right) direction of the vehicle |
| EV Mode | Refer to Data List |
| FC Main Relay | |
| Ready | |
| FC Intermittent Operation | |
| FC Voltage before Boosting | |
| Smoothed Value of FC Stack Coolant Temperature (FC Stack Outlet) | |
| Smoothed Value of FC Stack Coolant Temperature (Radiator Outlet) | |
| Estimated Radiator Rotary Valve Position | |
| Target Radiator Rotary Valve Position | |
| FC Current | |
| FC Water Pump Consumption Power | |
| FC Mode | |
| Low Temperature Mode | |
| FC Stack Power Generation Mode | |
| FC Limited Current (FC Voltage) | Electrical current of the FC stack power supply, which is limited due to the FC stack cell voltage |
| FC Limited Current (FC Stack Coolant High Temperature) | Electrical current of the FC stack power supply, which is limited due to high FC stack coolant temperature |
| FC Available Output Current | Estimated electrical current that can be generated by the FC stack, which is calculated by the FC control ECU |
| FC Limited Current (Medium-range Hydrogen Pressure Low) | Electrical current of the FC stack power supply, which is limited due to Medium-range Hydrogen Pressure Low |
| FC Auxiliary Drive Limited Minimum Current | Minimum electrical current of the FC stack power supply when the power generation is restricted |
| Target FC Stack Coolant Temperature (FC Stack Outlet) | Refer to Data List |
| ECU Internal Voltage | |
| Target FC Water Pump Revolution | |
| FC Water Pump Revolution | |
| FC Stack Cell Average Voltage for Limiting FC Current | Average measured cell voltage of the FC stack 2-cell-set measurement area, which is for restricting the electrical current of the FC stack power supply |
VEHICLE CONTROL HISTORY (SRS AIRBAG)
Tech Tips
A part of the control history can be confirmed using the vehicle control history.