SFI SYSTEM (w/ EGR 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 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

  • EGR valve assembly

  • 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

  • EGR valve assembly

  • ECM
P3193

Fuel low level signal input into ECM

(1 trip detection logic)

  • Out of fuel

  • ECM

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

MONITOR STRATEGY

Frequency of operation Continuous

INSPECTION PROCEDURE

Tech Tips


  • 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.

PROCEDURE


  1. 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.

      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

      Tech Tips

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


    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 ran out of fuel in the past.

      • If not enough fuel is added, DTC P3190, P3191 or P3193 may be output again. If the engine cannot be started because the vehicle is out of fuel, add fuel until the fuel level warning light turns off.


    NG

    REFILL FUEL

    OK

  3. CHECK INTAKE SYSTEM


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

      OK
      No leaks in intake system.

    NG

    REPAIR OR REPLACE INTAKE 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


    1. Check the fuel pressure Click here.


    NG

    CHECK FUEL PUMP CONTROL SYSTEM

    OK

  6. 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.

      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 request torque.
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Click here

    A

  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 SUB-ASSEMBLY


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


    NG

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY 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 CAMSHAFT POSITION SENSOR


    1. Replace the camshaft position sensor Click here.


    NEXT

  12. 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.

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

    7. Put the engine in inspection mode (maintenance 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 / DTC.

    11. Read the pending DTCs.

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

    B

    END

    A

  13. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE EGR STEP POSITION)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

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

    5. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

      Tech Tips

      The A/C switch and all accessory switches should be off.

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / All Data / Throttle Idle Position and MAP.

    7. Confirm that the Throttle Idle Position is ON and check the MAP value in the Data List while performing the Active Test.

      Note


      • Do not leave the EGR valve open for 10 seconds or more during the Active Test.

      • Be sure to return the EGR valve to step 0 when the Active Test is completed.

      • Do not open the EGR valve 30 steps or more during the Active Test.

      OK
      MAP change in response to EGR step position when Throttle Idle Position is ON in Data List.
      Standard
      - EGR Step Position (Active Test)
      0 Steps 0 to 30 Steps

      MAP

      (Data List)

      		 (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

      Tech Tips


      • While performing the Active Test, if the increase in the value of MAP is small, the EGR valve assembly may be a malfunctioning.

      • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of MAP may occur while performing the Active Test. However, the amount that the value of MAP increases will be smaller than normal.

      • If there are starting problems and the Active Test cannot be performed, perform the EGR valve assembly inspection in the next step.

      Result
      Result Proceed to
      Outside of standard range A
      Within standard range B

    B

    REPLACE ECM Click here

    A

  14. INSPECT EGR VALVE ASSEMBLY


    1. Remove the EGR valve assembly Click here.

    2. Check if the EGR valve is stuck open.

      OK
      EGR valve is tightly closed.

    NG

    REPLACE EGR VALVE ASSEMBLY Click here

    OK

  15. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  16. 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 30 seconds.

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

    7. Put the engine in inspection mode (maintenance 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