FC CONTROL SYSTEM, Diagnostic DTC:P1E03-450, P1E13-450

DTC Code DTC Name
P1E03-450 Tank Shut Valve1 Circuit High
P1E13-450 Tank Shut Valve2 Circuit High

DESCRIPTION

Refer to DTC P1E02-450.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P1E03-450 Tank Shut Valve1 Circuit High

Tank shut valve relay has been requested to turn OFF, the tank shut valve 1 is driven to ON, and the TNV1 voltage has remained at more than 0.3 V for more than 3 seconds.

(1 trip detection logic)

  • No. 1 hydrogen tank assembly (tank shut valve 1)

  • Hydrogen fuel control ECU assembly

  • Wire harness or connector

  • EV control ECU

  • Tank shut valve relay

 Master Warning Light: Comes on
P1E13-450 Tank Shut Valve2 Circuit High

Tank shut valve relay has been requested to turn OFF, the tank shut valve 2 is driven to ON, and the TNV2 voltage has remained at more than 0.3 V for more than 3 seconds.

(1 trip detection logic)

  • No. 2 hydrogen tank assembly (tank shut valve 2)

  • Hydrogen fuel control ECU assembly

  • Wire harness or connector

  • EV control ECU

  • Tank shut valve relay

 Master Warning Light: Comes on

Tech Tips

By accessing the "FC Mode" and "FC Intermittent Operation" in the freeze frame data, the FC system condition at the time the malfunction occurred can be checked.

Related Data List
DTC No. Data List
P1E03-450

  • Tank Shut Valve 1 Voltage*1

  • Tank Shut Valve 1 Driving Request

  • Tank Shut Valve Power Supply Relay*2
P1E13-450

  • Tank Shut Valve 2 Voltage*1

  • Tank Shut Valve 2 Driving Request

  • Tank Shut Valve Power Supply Relay*2

WIRING DIAGRAM

Refer to DTC P1E02-450.

Click here

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses of circuits related to this system before performing the following procedure.

  • 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).

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).

  2. Turn the power switch off and wait for 1 minute or more.

PROCEDURE


  1. READ VALUE USING GTS (TANK SHUT VALVE 1 VOLTAGE, TANK SHUT VALVE 2 VOLTAGE)


    1. Remove the tank shut valve relay.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / FC / Data List / Tank Shut Valve 1 Voltage, Tank Shut Valve 2 Voltage


      Powertrain > FC > Data List
      Tester Display
      Tank Shut Valve 1 Voltage
      Tank Shut Valve 2 Voltage

    6. Read the value displayed on the GTS.

      Result
      Tank Shut Valve 1 Voltage Tank Shut Valve 2 Voltage Proceed to
      0.3 V or more Less than 0.3 V A
      Less than 0.3 V 0.3 V or more
      0.3 V or more 0.3 V or more
      Less than 0.3 V Less than 0.3 V B

      Tech Tips

      If there is a +B short circuit, the GTS indicates 0.3 V or more.

    7. Turn the power switch off.

    8. Reinstall the tank shut valve relay.


    B

    INSPECT RELAY (TANK SHUT VALVE RELAY) Click here

    A

  2. CHECK TERMINAL VOLTAGE (+BP, TNV1, TNV2)


    1. Remove the tank shut valve relay.

    2. Disconnect the hydrogen fuel control ECU assembly connector.

    3. Turn the power switch on (IG).

    4. A01MJTMC01
      *a

      Front view of wire harness connector

      (to Hydrogen Fuel Control ECU Assembly)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      P30-5 (+BP) - P30-10 (E1) Power switch on (IG) Below 1 V
      P30-6 (TNV1) - P30-10 (E1) Power switch on (IG) Below 1 V
      P30-3 (TNV2) - P30-10 (E1) Power switch on (IG) Below 1 V

    5. Turn the power switch off.

    6. Reconnect the hydrogen fuel control ECU assembly connector.

    7. Reinstall the tank shut valve relay.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYDROGEN FUEL CONTROL ECU ASSEMBLY Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (TANK SHUT VALVE RELAY - HYDROGEN FUEL CONTROL ECU ASSEMBLY)


    1. Remove the tank shut valve relay.

    2. Disconnect the hydrogen fuel control ECU assembly connector.

    3. A01MJ4S

      Disconnect the R2 No. 1 hydrogen tank assembly (tank shut valve 1) connector.

    4. A01MIKD

      Disconnect the R3 No. 2 hydrogen tank assembly (tank shut valve 2) connector.

    5. Turn the power switch on (IG).

    6. A01MJTMC13
      *a

      Front view of wire harness connector

      (to Hydrogen Fuel Control ECU Assembly)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      P30-5 (+BP) - P30-10 (E1) Power switch on (IG) Below 1 V

    7. Turn the power switch off.

    8. Reconnect the R2 No. 1 hydrogen tank assembly (tank shut valve 1) connector.

    9. Reconnect the R3 No. 2 hydrogen tank assembly (tank shut valve 2) connector.

    10. Reinstall the tank shut valve relay.

    11. Reconnect the hydrogen fuel control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (HYDROGEN FUEL CONTROL ECU ASSEMBLY - NO. 1 HYDROGEN TANK ASSEMBLY (TANK SHUT VALVE 1))


    1. Disconnect the hydrogen fuel control ECU assembly connector.

    2. Disconnect the R2 No. 1 hydrogen tank assembly (tank shut valve 1) connector.

    3. Turn the power switch on (IG).

    4. A01MJTMC08
      *a

      Front view of wire harness connector

      (to Hydrogen Fuel Control ECU Assembly)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      P30-6 (TNV1) - P30-10 (E1) Power switch on (IG) Below 1 V

    5. Turn the power switch off.

    6. Reconnect the R2 No. 1 hydrogen tank assembly (tank shut valve 1) connector.

    7. Reconnect the hydrogen fuel control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (HYDROGEN FUEL CONTROL ECU ASSEMBLY - NO. 2 HYDROGEN TANK ASSEMBLY (TANK SHUT VALVE 2))


    1. Disconnect the hydrogen fuel control ECU assembly connector.

    2. Disconnect the R3 No. 2 hydrogen tank assembly (tank shut valve 2) connector.

    3. Turn the power switch on (IG).

    4. A01MJTMC07
      *a

      Front view of wire harness connector

      (to Hydrogen Fuel Control ECU Assembly)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      P30-3 (TNV2) - P30-10 (E1) Power switch on (IG) Below 1 V

    5. Turn the power switch off.

    6. Reconnect the R3 No. 2 hydrogen tank assembly (tank shut valve 2) connector.

    7. Reconnect the hydrogen fuel control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK NO. 1 HYDROGEN TANK ASSEMBLY (TANK SHUT VALVE 1)


    1. Disconnect the R2 No. 1 hydrogen tank assembly (tank shut valve 1) connector.

    2. Turn the power switch on (IG).

    3. A01MITHC06
      *a

      Component without harness connected

      (No. 1 Hydrogen Tank Assembly (Tank Shut Valve 1))

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      4 (TVR1) - Body ground Power switch on (IG) Below 1 V

    4. Reconnect the R2 No. 1 hydrogen tank assembly (tank shut valve 1) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYDROGEN TANK ASSEMBLY NO.1 (TANK SHUT VALVE 1) Click here

    OK

  7. CHECK NO. 2 HYDROGEN TANK ASSEMBLY (TANK SHUT VALVE 2)


    1. Disconnect the R3 No. 2 hydrogen tank assembly (tank shut valve 2) connector.

    2. Turn the power switch on (IG).

    3. A01MITHC07
      *a

      Component without harness connected

      (No. 2 Hydrogen Tank Assembly (Tank Shut Valve 2))

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      4 (TVR2) - Body ground Power switch on (IG) Below 1 V

    4. Reconnect the R3 No. 2 hydrogen tank assembly (tank shut valve 2) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYDROGEN FUEL CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE NO. 2 HYDROGEN TANK ASSEMBLY (TANK SHUT VALVE 2) Click here

  8. INSPECT RELAY (TANK SHUT VALVE RELAY)

    Click here

    Result
    Proceed to
    OK
    NG

    NG

    REPLACE RELAY (TANK SHUT VALVE RELAY)

    OK

  9. CHECK HARNESS AND CONNECTOR (EV CONTROL ECU - TANK SHUT VALVE RELAY)


    1. Remove the tank shut valve relay.

    2. Disconnect the EV control ECU connector.

    3. Turn the power switch on (IG).

    4. A01MHTNC01
      *a

      Rear view of wire harness connector

      (to EV Control ECU)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      G45-3 (RLTN) - G45-6 (E1) Power switch on (IG) Below 1 V

    5. Turn the power switch off.

    6. Reconnect the EV control ECU connector.

    7. Reinstall the tank shut valve relay.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE EV CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR