LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> P-HEV Drive Motor System (Diagnostics) (2 Of 3) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0BFD-62: Drive Motor "A" Phase U-V-W Current Sensor Signal Compare Failure >> Notes

DTC P0BFD-62: Drive Motor "A" Phase U-V-W Current Sensor Signal Compare Failure: Notes

  1. - 

    Detecting condition: 

    Motor inverter current sensor property malfunction

    When the total value of UVW-phase sensor outputs deviates from the proper value, it is detected as abnormal.

    (Normally, the total of inverter current sensor UVW-phase output values is about 0.)

    (1 trip detection logic)

    Trouble symptom: 

    • Greatly reduced output power
    • Driving in reverse not possible
    • A driving range is limited
    • Engine used while driving and engine speed becomes high
    CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
  1. CHECK DTC  .

    Read the following DTCs using Subaru Select Monitor. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to P-HEV DRIVE MOTOR (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    • P-HEV Hybrid Powertrain Control
    • P-HEV Drive Motor
    NOTE:
    Malfunction contents System Related DTC
    Insulation malfunction P-HEV Hybrid Powertrain Control P1C7C-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (A/C AREA) INTERNAL ELECTRONIC FAILURE
    P1C7D-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (HYBRID/EV BATTERY AREA) INTERNAL ELECTRONIC FAILURE
    P1C7E-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (TRANSAXLE AREA) INTERNAL ELECTRONIC FAILURE
    P1C7F-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION (DIRECT CURRENT AREA) INTERNAL ELECTRONIC FAILURE
    High voltage system failure P-HEV Hybrid Powertrain Control P0AA6-49 HYBRID/EV BATTERY VOLTAGE SYSTEM ISOLATION INTERNAL ELECTRONIC FAILURE
    Microcomputer malfunction P-HEV Hybrid Powertrain Control P0A1B-49 DRIVE MOTOR "A" CONTROL MODULE INTERNAL ELECTRONIC FAILURE
    P-HEV Drive Motor P1C2B-1C DRIVE MOTOR "A" CONTROL MODULE A/D CONVERTER CIRCUIT VOLTAGE OUT OF RANGE
    P1C2B-49 DRIVE MOTOR "A" CONTROL MODULE A/D CONVERTER CIRCUIT INTERNAL ELECTRONIC FAILURE
    P3124-87 LOST COMMUNICATION BETWEEN DRIVE MOTOR "A" AND HV ECU MISSING MESSAGE
    Power supply system malfunction P-HEV Drive Motor P06B0-1C GENERATOR CONTROL MODULE POSITION SENSOR REF POWER SOURCE CIRCUIT VOLTAGE OUT OF RANGE
    P06D6-1C GENERATOR CONTROL MODULE OFFSET POWER CIRCUIT VOLTAGE OUT OF RANGE
    System malfunction P-HEV Drive Motor P0A78-73 DRIVE MOTOR "A" INVERTER ACTUATOR STUCK CLOSED

    When "Only DTC P0BFD-62 or P1C67-1F is displayed" or "DTC other than above is displayed at the same time", go to  A.

    When DTCs related to [P-HEV Hybrid Powertrain Control], mentioned above, are simultaneously displayed, go to  B.

    When DTCs related to [P-HEV Drive Motor], mentioned above, are simultaneously displayed, go to  C.

    Yes: 

    1. Go to  2.
    2. Perform the diagnosis for the simultaneously displayed DTCs.
      NOTE: If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.
    3. Perform the diagnosis for the simultaneously displayed DTCs.
      NOTE: If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.

    No:  -

  2. CHECK THE CONNECTING CONDITION OF CONNECTOR (Inverter with converter assembly LOW PRESSURE CONNECTOR)  .
    CAUTION: Make sure to wear insulated gloves and protective goggles during the work.
    1. Check that the Service plug is disconnected. Ref. to HYBRID ELECTRIC VEHICLE>SERVICE PLUG .
    2. Check the connecting condition of low pressure connectors (HV23) and (HV24) in Inverter with converter assembly and check the relevant terminals for contact pressure, deformation and intrusion of water or foreign matter. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .
      NOTE: When connecting the connector, insert to the end with the lock lever raised, then fold the lock lever completely until a click is heard. After connected, make sure that the lock claw does not loosen and pull the connector to see that it does not come off.

      Is there looseness at the connector connection, or any poor contact, deformation or intrusion of water or foreign matter at the relevant terminals?

      Yes:  Connect the connector securely. Or repair the poor contact of connector.

      No:  Go to  3.

  3. CHECK MOTOR HIGH-VOLTAGE CIRCUIT  .

    Check MOTOR HIGH-VOLTAGE CIRCUIT. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>MOTOR HIGH-VOLTAGE CIRCUIT .

    Is the MOTOR HIGH-VOLTAGE CIRCUIT OK?

    Yes:  Replace Inverter with converter assembly. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .

    No:  Repair according to MOTOR HIGH-VOLTAGE CIRCUIT inspection.

scientia non olet · About LEMON Manuals