SFI SYSTEM, Diagnostic DTC:P3190, P3191, P3193

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

DESCRIPTION

From the hybrid vehicle 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 RPM of control target (target RPM), and whether the engine is in start mode or not. Then, based on the required output and target RPM, 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, a DTC is detected.

DTC No. DTC Detection Condition Trouble Area
P3190

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


  • Communication with hybrid vehicle control ECU is normal

  • Engine RPM 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%

  • Air induction system

  • Throttle body

  • Fuel pressure (low pressure side)

  • Engine

  • Mass air flow meter

  • Out of fuel

  • Engine coolant temperature sensor

  • Crankshaft position sensor

  • Camshaft position sensor

  • VVT sensor (for intake side)

  • VVT sensor (for exhaust side)

  • ECM
P3191

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


  • Communication with hybrid vehicle control ECU is normal

  • Engine RPM is a fixed value or more

  • Engine start mode is active

  • Air induction system

  • Throttle body

  • Fuel pressure (low pressure side)

  • Engine

  • Mass air flow meter

  • Out of fuel

  • Engine coolant temperature sensor

  • Crankshaft position sensor

  • Camshaft position sensor

  • VVT sensor (for intake side)

  • VVT sensor (for exhaust side)

  • ECM
P3193

Following conditions are met (1 trip detection logic):


  • Fuel low level signal input into ECM

  • Detection condition for P3190 or P3191 is satisfied

  • Out of fuel

  • ECM

MONITOR DESCRIPTION

The ECM and hybrid vehicle control ECU are connected by a communication line called CAN. The ECM sends engine speed data and other data to the hybrid vehicle control ECU while the hybrid vehicle control ECU sends the information such as a requirement for the engine power to the ECM using the CAN communication line. When the communication between the ECM and hybrid vehicle control ECU is normal and the following items become a specified condition, the ECM illuminates the MIL and sets a DTC.


  1. Engine speed

  2. Target torque

  3. Ratio of target torque against estimated torque

  4. Fuel level

CAUTION / NOTICE / HINT

Tech Tips


  • Repeating this inspection for symptom confirmation may cause the SOC 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 or approximately 30 minutes when the battery temperature is 0°C.

  • 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. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  • When viewed from the rear of the engine assembly, Bank 1 is on the left side and Bank 2 is on the right side.

PROCEDURE


  1. CHECK OTHER DTC 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 DTCs.

      Result
      Display (DTC output) Proceed to
      P3190, P3191 and/or P3193 A
      P3190, P3191 and/or P3193, and other DTCs B

    B

    GO TO DTC CHART Click here

    A

  2. CHECK SHORTAGE OF FUEL


    1. Check the amount of fuel remaining.

      OK
      There is enough fuel.

      Tech Tips


      • DTCs P3190, P3191 and/or P3193 may be output if the vehicle has 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 engage 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.


    NG

    REFILL FUEL

    OK

  3. CHECK AIR INDUCTION SYSTEM


    1. Check the air induction system Click here.

      OK
      The air induction system has no leakage and blockages.

    NG

    REPAIR OR REPLACE AIR INDUCTION SYSTEM

    OK

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

    OK
    Unusual noise and vibration do not occur.

    NG

    REPAIR OR REPLACE MALFUNCTIONING PART

    OK

  5. CHECK FUEL PRESSURE (LOW PRESSURE SIDE)


    1. Check the fuel pressure (low pressure side) Click here.

      Standard pressure
      196 to 588 kPa (2.0 to 6.0 kgf/cm2, 28 to 85 psi)

    NG

    CHECK FUEL LINE Click here

    OK

  6. INSPECT FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent 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.

      Tech Tips

      *: 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 requested torque.

    OK

    INSPECT MASS AIR FLOW METER Click here

    NG

  7. INSPECT THROTTLE BODY ASSEMBLY


    1. Inspect the throttle body assembly Click here.


    NG

    REPLACE THROTTLE BODY ASSEMBLY Click here

    OK

  8. INSPECT MASS AIR FLOW METER


    1. Inspect the mass air flow meter Click here.


    NG

    REPLACE MASS AIR FLOW METER Click here

    OK

  9. INSPECT ENGINE COOLANT TEMPERATURE SENSOR


    1. Inspect the engine coolant temperature sensor Click here.


    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here

    OK

  10. INSPECT CRANKSHAFT POSITION SENSOR


    1. Inspect the crankshaft position sensor Click here.


    NG

    REPLACE CRANKSHAFT POSITION SENSOR Click here

    OK

  11. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  12. 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 intelligent tester on.

    4. Clear the DTC Click here.

    5. Turn the power switch off.

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

    7. Put the engine in inspection mode Click here.

    8. Start the engine.

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

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

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

    12. Check the DTC judgment result.


    NEXT

    END

  13. CHECK FUEL LINE


    1. Check the fuel lines for leaks or blockage.


    OK

    REPAIR OR REPLACE FUEL LINE

    NG

    REPLACE FUEL PUMP Click here