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SFI SYSTEM, Diagnostic DTC:P3190, P3191, P3193

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DTC Code DTC Name
P3190 Poor Engine Power
P3191 Engine does not Start
P3193 Fuel Run Out
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DESCRIPTION

From the power management control ECU, the ECM receives data such as power output required for the engine (required output), estimated torque produced by the engine (estimated torque), engine speed of control target (target speed), and whether the engine is in start mode or not. Then, based on the required output and target speed, the ECM calculates a target torque that is to be produced by the engine and compares it with the estimated torque. If the estimated torque is very low compared with the target torque, or the engine start mode continues for the specific duration calculated by the coolant temperature, an abnormal condition is detected.

DTC No. DTC Detection Condition Trouble Area
P3190

Following conditions continue at a fixed engine speed or a fixed length of time (1 trip detection logic):


  • Communication with power management control ECU is normal

  • Engine speed is a fixed value or more

  • Engine start mode is not active

  • Target torque is a fixed value

  • Ratio of estimated torque against target torque is less than 20%

  • Intake system

  • Throttle body assembly

  • Fuel system

  • Engine

  • Mass air flow meter sub-assembly

  • Out of fuel

  • Engine coolant temperature sensor

  • Crankshaft position sensor

  • Camshaft position sensor

  • ECM
P3191

Following conditions continue at a fixed engine speed or a fixed length of time (1 trip detection logic):


  • Communication with power management control ECU is normal

  • Engine speed is a fixed value or more

  • Engine start mode is active

  • No engine start determination for 100 engine revolutions or more, and 6 seconds or more

  • Intake system

  • Throttle body assembly

  • Fuel system

  • Engine

  • Mass air flow meter sub-assembly

  • Out of fuel

  • Engine coolant temperature sensor

  • Crankshaft position sensor

  • Camshaft position sensor

  • ECM
P3193 Fuel low level signal input into ECM (1 trip detection logic)

  • Out of fuel

  • ECM
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MONITOR DESCRIPTION

The ECM and power management control ECU are connected using CAN communication. The ECM sends engine speed data and other data to the power management control ECU while the power management control ECU sends information such as a requirement for engine power to the ECM using CAN communication. When the communication between the ECM and power management control ECU is normal and the following items meet the specified conditions, the ECM illuminates the MIL and stores a DTC.


  1. Engine speed

  2. Target torque

  3. Ratio of target torque against estimated torque

  4. Fuel level

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MONITOR STRATEGY

Frequency of operation Continuous
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CONFIRMATION DRIVING PATTERN


  1. Connect the intelligent tester to the DLC3.

  2. Turn the power switch on (IG) and turn the tester on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for at least 30 seconds.

  5. Turn the power switch on (IG) and turn the tester on.

  6. Put the engine in inspection mode (maintenance mode) (Click here).

  7. Start the engine.

  8. Allow the engine to idle for 10 seconds or more.

  9. Enter the following menus: Powertrain / Engine and ECT / DTC.

  10. Read the pending DTCs.

    Tip:

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  12. Input the DTC: P3190, P3191 or P3193.

  13. Check the DTC judgment result.

    Tester Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

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INSPECTION PROCEDURE

Note:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tip:

  • Repeating this inspection for symptom confirmation may cause the SOC (State Of Change) to drop, preventing the system from entering the READY-on state. In this case, use the THS charger to charge the HV battery.

  • Cranking the engine once causes the SOC to drop approximately 1%.

  • Charging the HV battery once (10 minutes) using the THS charger restores the SOC approximately 2%.

  • Charging the HV battery using the THS charger takes approximately 10 minutes when the battery temperature is 25°C (77°F) or approximately 30 minutes when the battery temperature is 0°C (32°F).

  • The THS charger is a supplemental charging device that charges the HV battery enough to enable the engine to start (the vehicle can enter the READY-on state).

  • Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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PROCEDURE


  1. Click here

    CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P3190, P3191 AND/OR P3193)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs.

      Table 1. Result
      Result Proceed to
      DTC P3190, P3191 and/or P3193 are output A
      DTC P3190, P3191 and/or P3193, and other DTCs are output B
      Tip:

      If any other codes besides P3190, P3191 and/or P3193 are output, perform troubleshooting for those DTCs first.


  2. Click here

    CHECK SHORTAGE OF FUEL


    1. Check the amount of fuel remaining.

      OK
      There is enough fuel.
      Tip:

      • DTC P3190, P3191 and /or P3193 may be output if the vehicle run out of fuel in the past.

      • When an insufficient amount of fuel is added to the vehicle and when the hybrid control system will not engine because the DTCs P3190, P3191 and/or P3193 that are output regard the vehicle as out of fuel, continue refueling the vehicle until the fuel level warning light turns off.


  3. Click here

    CHECK INTAKE SYSTEM


    1. Check the intake system for vacuum leaks (Click here).

      OK
      No leaks in intake system.

  4. Click here

    CHECK FOR UNUSUAL NOISE OR VIBRATION WHEN STARTING ENGINE OR REVVING UP

    OK
    Unusual noise and vibration do not occur.

  5. Click here

    CHECK FUEL PRESSURE


    1. Check the fuel pressure (Click here).


  6. Click here

    INSPECT FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC / Freeze Frame Data.

    5. Calculate the requested torque* and compare it with Actual Engine Torque.

      Tip:

      *: The requested torque is calculated by putting "Requested Engine Torque" and "HV Target Engine Speed" from the freeze frame data into the following formula:

      Requested torque = Requested Engine Torque (kW) / HV Target Engine Speed (rpm) x 9554

      Standard
      Actual Engine Torque is 60% or more of the request torque.
      Table 2. Result
      Result Proceed to
      NG A
      OK B

  7. Click here

    INSPECT THROTTLE BODY ASSEMBLY


    1. Inspect the throttle body assembly (Click here).


  8. Click here

    INSPECT MASS AIR FLOW METER SUB-ASSEMBLY


    1. Inspect the mass air flow meter sub-assembly (Click here).


  9. Click here

    INSPECT ENGINE COOLANT TEMPERATURE SENSOR


    1. Inspect the engine coolant temperature sensor (Click here).


  10. Click here

    INSPECT CRANKSHAFT POSITION SENSOR


    1. Inspect the crankshaft position sensor (Click here).


  11. Click here

    REPLACE CAMSHAFT POSITION SENSOR


    1. Replace the camshaft position sensor (Click here).


  12. Click here

    CHECK WHETHER DTC OUTPUT RECURS (DTC P3190, P3191 OR P3193)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Clear the DTCs (Click here).

    5. Turn the power switch off and wait for at least 30 seconds.

    6. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

    7. Enter the following menus: Powertrain / Engine and ECT / DTC.

    8. Read the pending DTCs.

      Table 3. Result
      Result Proceed to
      P3190, P3191 or P3193 is output A
      DTC is not output B

  13. Click here

    REPLACE ECM


    1. Replace the ECM (Click here).


  14. Click here

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Clear the DTCs (Click here).

    5. Turn the power switch off and wait for at least 30 seconds.

    6. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

    7. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

    8. Input the DTC: P3190, P3191 or P3193.

    9. Check the DTC judgment result.


  15. Click here

    CHECK FUEL PUMP CONTROL CIRCUITClick here

  16. Click here

    GO TO DTC CHARTClick here

  17. Click here

    REFILL FUEL

  18. Click here

    REPAIR OR REPLACE INTAKE SYSTEM

  19. Click here

    REPAIR OR REPLACE MALFUNCTIONING PART

  20. Click here

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLYClick here

  21. Click here

    REPLACE ENGINE COOLANT TEMPERATURE SENSORClick here

  22. Click here

    REPLACE CRANKSHAFT POSITION SENSORClick here

  23. Click here

    REPLACE THROTTLE BODY ASSEMBLYClick here

  24. Click here

    END