HYBRID CONTROL SYSTEM, Diagnostic DTC:P1D6F-450

DTC Code DTC Name
P1D6F-450 FC Barometric Pressure Sensor / MG Barometric Pressure Sensor Correlation

DESCRIPTION

The EV control ECU performs control to conform to the vehicle usage conditions by sensing the atmospheric pressure by the atmospheric pressure sensor installed to the circuit board of the motor generator control ECU (MG ECU), which is built inside the inverter assembly with converter. The EV control ECU also detects deviations in the monitored values of the atmospheric pressure sensors, between the one inside the EV control ECU and the other one inside the FC control ECU and determines whether a malfunction has occurred.

A01MJSFE02
DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P1D6F-450 FC Barometric Pressure Sensor / MG Barometric Pressure Sensor Correlation

When comparing the air pressure sensor inside the inverter with converter assembly and the air pressure sensor inside the FC control ECU, and the difference in air pressure values is 11.4 kPa or more.

(1 trip detection logic)

  • Inverter with converter assembly

  • FC control ECU

Master Warning Light:

Comes on
Related Data List
DTC No. System Data List
P1D6F-450 EV Barometric Pressure (Smoothed Value)
FC Smoothed Value of Barometric Pressure

CAUTION / NOTICE / HINT

Note

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. When the power switch is turned on (IG), if the Data List (EV) item "Barometric Pressure (Smoothed Value)" and the Data List (FC) item "Smoothed Value of Barometric Pressure" are approximately the same value, the condition is normal.

PROCEDURE


  1. CHECK DTC OUTPUT (FC)


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

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / FC / Trouble Codes.


      Powertrain > FC > Trouble Codes

    4. Check for DTCs.

      Result
      Result Proceed to
      No DTCs are output, or DTCs except the ones in the table below are also output. A
      Any of the following DTCs are also output. B
      Relevant DTC
      P1E48-450 Barometric Pressure Sensor / FC Stack Air Pressure Sensor (FC Stack Inlet) Correlation
      P2228-450 Barometric Pressure Sensor "A" Circuit Low
      P2229-450 Barometric Pressure Sensor "A" Circuit High

      Tech Tips

      P1D6F-450 may be stored due to a malfunction which causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table.

    5. Turn the power switch off.


    B

    GO TO DTC CHART (FC CONTROL SYSTEM) Click here

    A

  2. CHECK DTC OUTPUT (EV)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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


      Powertrain > EV > Trouble Codes

    4. Check for DTCs.

      Result
      Result Proceed to
      P1D6F-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
      Relevant DTC
      P1D8F-474, 475, 476, 477, 481 FC Air Compressor Motor "A" Control Module
      P0A1B-193, 512, 661, 786 Drive Motor "A" Control Module
      P0A1D-148 EV Control Module
      P2228-268 Barometric Pressure Sensor "A" Circuit Low
      P2229-269 Barometric Pressure Sensor "A" Circuit High
      P2511-149 EV CPU Power Relay Sense Circuit Intermittent No Continuity
      P324E-788 Motor CPU Power Relay Sense Circuit Intermittent No Continuity
      U0110 (all INF codes)*1 Lost Communication with Drive Motor Control Module "A"
      U1161-450 Lost Communication with FC System

      Tech Tips


      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.

      • P1D6F-450 may be stored due to a malfunction which causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table.

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  3. READ VALUE USING GTS (BAROMETRIC PRESSURE (SMOOTHED VALUE))


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / EV / Data List / Barometric Pressure (Smoothed Value)


      Powertrain > EV > Data List
      Tester Display
      Barometric Pressure (Smoothed Value)

    4. Using the table, read the normal atmospheric pressure value for the applicable altitude.

      A01MH69

      Tech Tips


      • Standard atmospheric pressure is approximately 101 kPa (15 psi).

      • For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by approximately 1 kPa (0.1 psi). This varies by weather.

    5. Compare the Smoothed Value of Barometric Pressure values in the Data List (EV) with the normal atmospheric value from the table.

      OK
      The difference between the value for Data List (EV) item "Barometric Pressure (Smoothed Value)" and the normal atmospheric pressure value is 10 kPa or less.

      Tech Tips

      Using the GTS Dual Data List function, the EV Data List items and FC Data List items can be checked simultaneously.

    6. Enter the following menus: Powertrain / FC / Data List / Smoothed Value of Barometric Pressure


      Powertrain > FC > Data List
      Tester Display
      Smoothed Value of Barometric Pressure

    7. Compare the Smoothed Value of Barometric Pressure values in the Data List (FC) with the normal atmospheric value from the table.

      OK
      The difference between the value for Data List (FC) item "Smoothed Value of Barometric Pressure" in the Data List and the normal atmospheric pressure value is 10 kPa or less.

      Tech Tips

      Using the GTS Dual Data List function, the EV Data List items and FC Data List items can be checked simultaneously.

      Result
      Result Proceed to
      Difference between "Barometric Pressure (Smoothed Value)" in Data List (EV) and normal atmospheric pressure value is 10 kPa (1.5 psi) or more. A
      Difference between "Smoothed Value of Barometric Pressure" in Data List (FC) and normal atmospheric pressure value is 10 kPa (1.5 psi) or more. B
      Other than above. C

    8. Turn the power switch off.


    A

    REPLACE WITH CONVERTER INVERTER ASSEMBLY Click here

    B

    REPLACE FC CONTROL ECU Click here

    C

    CHECK INTERMITTENT PROBLEMS