FC BOOST CONTROL SYSTEM, Diagnostic DTC:P1D61-450

DTC Code DTC Name
P1D61-450 V Phase Reactor Temperature/Coolant Temperature Correlation

DESCRIPTION

The FC control ECU is located inside the FC converter assembly. It monitors the temperature of the reactor using the V phase reactor temperature sensor and performs control to prevent overheating of components such as the reactor. It also detects malfunctions in the reactor temperature sensor wirings.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P1D61-450 V Phase Reactor Temperature/Coolant Temperature Correlation

The difference between the reactor temperature sensor value and coolant temperature did not change even after the reactor was turned on.

(1 trip detection logic)

  • FC converter assembly

  • Inverter cooling system

  • Cooling fan system

 Master Warning Light: Comes on
Related Data List
DTC No. System Data List
P1D61-450 FCDC

  • Reactor Temperature

  • V Phase Reactor Temperature AD Value
EV Inverter Coolant Temperature

Tech Tips

This DTC will be stored when the reactor temperature sensor value becomes abnormal.

CAUTION / NOTICE / HINT

CAUTION:


  • B006JFB
    B006JM4

    Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grips from both FC stack assembly and EV battery.


    • Inspecting the high-voltage system

    • Disconnecting the low voltage connector of the inverter with converter assembly

    • Disconnecting the low voltage connector of the EV battery

    • Disconnecting the low voltage connector of the FC stack assembly

    • Disconnecting the low voltage connector of the FC converter assembly

      Tech Tips

      No removal order is specified for the service plug grips of the FC stack assembly and EV battery.

  • B006JBZ

    After removing the service plug grip from the EV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system. After removing the service grip from the FC stack assembly, store it in a safe location and use the "HIGH-VOLTAGE, DO NOT TOUCH" sign to notify other technicians that you are working on the high-voltage system.

  • B000ZMTC04
    *a Without waiting for 10 minutes

    After removal of the service plug grips of both FC stack assembly and EV battery, wait for at least 10 minutes before touching the high-voltage connectors and terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Tech Tips

    At least 10 minutes are necessary to discharge the high-voltage capacitors inside the inverter with converter assembly and FC stack assembly.

Note


  • When reinstalling the service plug grip to the FC stack assembly or the EV battery, slide the lever of the service plug until the letters "UNLOCK" are completely hidden, and insert it firmly.

    Click here

  • When the vehicle is parked with the power switch off, if the FC control ECU judges that the FC stack temperature will go below 0°C (32°F), it activates the FC air compressor, hydrogen pump and FC cooling water pump for a maximum of 180 seconds and drains water from the FC stack assembly. When performing inspection or repairs with the power switch off (not on (IG) or on (READY)), disconnect the cable from the negative (-) auxiliary battery terminal before performing work (If the auxiliary battery voltage is needed to conduct inspection, warm up the FC system beforehand).

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (READY) and wait for 90 seconds or more.

  2. Drive the vehicle for approximately 10 minutes referring to the following freeze frame data or Data List items: "Vehicle Speed".

PROCEDURE


  1. CHECK DTC OUTPUT (EV)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / EV / Trouble Codes.


      Powertrain > EV > Trouble Codes

    5. Check for DTCs.

      Result
      Result Proceed to
      "EV related DTCs are not output" or "DTCs except the ones in the table below are output" A
      Any of the following DTCs are output B
      Malfunction Content Relevant DTC
      Sensor and actuator circuit malfunction P0A02-719 Motor Electronics Coolant Temperature Sensor Circuit Low
      P0A03-720 Motor Electronics Coolant Temperature Sensor Circuit High
      P0A04-725 Motor Electronics Coolant Temperature Sensor Circuit Intermittent
      P0A93-346 Inverter Cooling System Performance
      P0C73-776 Motor Electronics Coolant Pump "A" Control Performance
      P314A-828 Inverter Coolant Pump Speed Signal

      Tech Tips

      DTC P1D61-450 may be output as a result of the malfunction indicated by the DTCs above.

    6. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. CHECK COOLING SYSTEM

    Click here

    Tech Tips

    If the "Cooling System" inspection results are normal, perform the next step.

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE FC CONVERTER ASSEMBLY Click here