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.

Engine speed
Target torque
Ratio of target torque against estimated torque
Fuel level

Monitor strategy

Frequency of operation

Continuous

Inspection procedure

HINT:

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.

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

Connect the intelligent tester to the DLC3.

Turn the power switch on (IG).

Turn the tester on.

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

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
HINT:

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

B

GO TO DTC CHART

OK

2.CHECK SHORTAGE OF FUEL

NG

REFILL FUEL

OK

3.CHECK INTAKE SYSTEM

Check the intake system for vacuum leaks .

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

Check the fuel pressure .

NG

CHECK FUEL PUMP CONTROL SYSTEM

OK

6.INSPECT FREEZE FRAME DATA

Connect the intelligent tester to the DLC3.

Turn the power switch on (IG).

Turn the tester on.

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

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

HINT:

*: 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

Go to step 8

OK

7.INSPECT THROTTLE BODY ASSEMBLY

Inspect the throttle body assembly .

NG

REPLACE THROTTLE BODY ASSEMBLY

OK

8.INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

Inspect the mass air flow meter sub-assembly .

NG

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

OK

9.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Inspect the engine coolant temperature sensor .

NG

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

OK

10.INSPECT CRANKSHAFT POSITION SENSOR

Inspect the crankshaft position sensor .

NG

REPLACE CRANKSHAFT POSITION SENSOR

OK

11.REPLACE CAMSHAFT POSITION SENSOR

Replace the camshaft position sensor .

NEXT

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

Connect the intelligent tester to the DLC3.

Turn the power switch on (IG).

Turn the tester on.

Clear the DTCs .

Turn the power switch off.

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

Put the engine in inspection mode (maintenance mode) .

Start the engine.

Allow the engine to idle for 10 seconds or more.

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

Read the pending DTCs.

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

B

END

OK

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

Connect the intelligent tester to the DLC3.

Turn the power switch on (IG).

Turn the tester on.

Put the engine in inspection mode (maintenance mode) .

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

HINT:

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

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

Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test.

HINT:

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 and idling condition 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
Idling condition	Steady idling	Idling changes from steady to rough idling or stalls
MAP (Data List)	MAP value is 20 to 40 kPa (150 to 300 mmHg) (EGR valve is fully closed)	MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

HINT:

During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve.

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

B

Go to step 15

OK

14.INSPECT EGR VALVE ASSEMBLY

Remove the EGR valve assembly .

Check if the EGR valve is stuck open.

OK:

EGR valve is tightly closed.

NG

REPLACE EGR VALVE ASSEMBLY

OK

15.REPLACE ECM

Replace the ECM .

NEXT

16.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Connect the intelligent tester to the DLC3.

Turn the power switch on (IG).

Turn the tester on.

Clear the DTCs .

Turn the power switch off and wait for 30 seconds.

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

Put the engine in inspection mode (maintenance mode) .

Start the engine.

Allow the engine to idle for 10 seconds or more.

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

Input the DTC: P3190, P3191 or P3193.

Check the DTC judgment result.