FC BOOST CONTROL SYSTEM, Diagnostic DTC:P1D31-450, P1D36-450, P1D3B-450, P1D41-450

DTC Code DTC Name
P1D31-450 U Phase Reactor Current Sensor Circuit (Offset)
P1D36-450 V Phase Reactor Current Sensor Circuit (Offset)
P1D3B-450 W Phase Reactor Current Sensor Circuit (Offset)
P1D41-450 X Phase Reactor Current Sensor Circuit (Offset)

DESCRIPTION

The FC boost control ECU is located inside the FC converter assembly. It monitors the reactor current sensors provided for each phase and detects malfunctions.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P1D31-450 U Phase Reactor Current Sensor Circuit (Offset)

Offset error is occurring in the FC converter current sensor (U phase current sensor)

(1 trip detection logic)

  • FC converter assembly

  • Wire harness or connector

 Master Warning Light: Comes on
P1D36-450 V Phase Reactor Current Sensor Circuit (Offset)

Offset error is occurring in the FC converter current sensor (V phase current sensor)

(1 trip detection logic)

  • FC converter assembly

  • Wire harness or connector

 Master Warning Light: Comes on
P1D3B-450 W Phase Reactor Current Sensor Circuit (Offset)

Offset error is occurring in the FC converter current sensor (W phase current sensor)

(1 trip detection logic)

  • FC converter assembly

  • Wire harness or connector

 Master Warning Light: Comes on
P1D41-450 X Phase Reactor Current Sensor Circuit (Offset)

Offset error is occurring in the FC converter current sensor (X phase current sensor)

(1 trip detection logic)

  • FC converter assembly

  • Wire harness or connector

 Master Warning Light: Comes on
Related Data List
DTC No. Data List
P1D31-450

  • FC Voltage before Boosting

  • FC Converter Output Voltage

  • U Phase FC Converter Shutdown Request
P1D36-450

  • FC Voltage before Boosting

  • FC Converter Output Voltage

  • V Phase FC Converter Shutdown Request
P1D3B-450

  • FC Voltage before Boosting

  • FC Converter Output Voltage

  • W Phase FC Converter Shutdown Request
P1D41-450

  • FC Voltage before Boosting

  • FC Converter Output Voltage

  • X Phase FC Converter Shutdown Request

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.


  • Turn the power switch on (READY) and wait for 5 seconds or more.

PROCEDURE


  1. CHECK DTC OUTPUT (FCDC)


    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 / FCDC / Trouble Codes.


      Powertrain > FCDC > Trouble Codes

    5. Check for DTCs.

      Result
      Result Proceed to
      "DTC P1D31-450, P1D36-450, P1D3B-450 or P1D41-450 only is output" or "DTCs except the ones in the table below are also output" A
      Any of the following DTCs are also output B
      Malfunction Content Relevant DTC
      Power source circuit malfunction P1D9F-450 Internal Control Module Voltage (+26V Power Source)
      P1DAF-450 Internal Control Module Voltage (-5V Power Source)
      P1DBF-450 Internal Control Module Voltage (5V Power Source)

      Tech Tips

      DTC P1D31-450, P1D36-450, P1D3B-450 or P1D41-450 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 (FC BOOST CONTROL SYSTEM) Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (FC CONVERTER ASSEMBLY CONNECTOR)

    Result
    Result Proceed to
    OK A
    NG (The connector is not connected securely) B
    NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector) C

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed to FC stack assembly and EV battery.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. A01MFR3

      Check the connection condition of the FC converter assembly connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

      Note

      Before disconnecting the connector, confirm that it is properly connected by checking that the locking claws are engaged and that the connector does not pull out.

      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector) C

    A

    REPLACE FC CONVERTER ASSEMBLY Click here

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR