DTC Code | DTC Name |
---|---|
P3190 | Poor Engine Power |
P3191 | Engine does not Start |
P3193 | Fuel Run Out |
DESCRIPTION
From the hybrid vehicle control ECU assembly, the ECM receives data such as engine power output required (required output), estimated torque produced by the engine (estimated torque), engine speed 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):
|
|
P3191 | Following conditions continue at a fixed engine speed or a fixed length of time (1 trip detection logic):
|
|
P3193 | Fuel low level signal input into ECM (1 trip detection logic). |
|
MONITOR DESCRIPTION
The ECM and hybrid vehicle control ECU assembly are connected using CAN communication. The ECM sends engine speed data and other data to the hybrid vehicle control ECU assembly while the hybrid vehicle control ECU assembly sends information such as a requirement for engine power to the ECM using CAN communication. When the communication between the ECM and hybrid vehicle control ECU assembly is normal and the following items meet the specified conditions, the ECM stores a DTC.
Engine speed
Target torque
Ratio of target torque against estimated torque
Fuel level
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the power switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) and turn the GTS on.
Put the engine in inspection mode (maintenance mode) (Click here).
Start the engine.
Allow the engine to idle for 10 seconds or more.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P3190, P3191 or P3193.
Check the DTC judgment result.
GTS Display | Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
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.
CAUTION / NOTICE / HINT
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 HV battery temperature is 25°C (77°F) or approximately 30 minutes when the HV 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 GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.
PROCEDURE
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P3190, P3191 AND/OR P3193)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Result | Proceed to |
---|---|
DTC P3190, P3191 and/or P3193 are output | A |
DTC P3190, P3191 and/or P3193 and other DTCs are output | B |
If any other codes besides P3190, P3191 and/or P3193 are output, perform troubleshooting for those DTCs first.
GO TO DTC CHART (Click here)
CHECK SHORTAGE OF FUEL
Check the amount of fuel remaining.
OK |
---|
There is enough fuel. |
DTCs 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.
REFILL FUEL
CHECK INTAKE SYSTEM
Check the intake system for vacuum leaks (Click here).
OK |
---|
No leaks in intake system. |
Perform "Inspection After Repair" after repairing or replacing the intake system (Click here).
REPAIR OR REPLACE INTAKE SYSTEM
CHECK FOR UNUSUAL NOISE OR VIBRATION WHEN STARTING ENGINE OR REVVING UP
OK |
---|
Unusual noise and vibration do not occur. |
REPAIR OR REPLACE MALFUNCTIONING PART
CHECK FUEL PRESSURE
Check the fuel pressure (Click here).
CHECK FUEL PUMP CONTROL CIRCUIT (Click here)
INSPECT FREEZE FRAME DATA
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Freeze Frame Data.
Calculate the requested torque* and compare it with Actual Engine Torque.
*: 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 | Proceed to |
---|---|
NG | A |
OK | B |
INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY
Inspect the throttle with motor body assembly (Click here).
Perform "Inspection After Repair" after replacing the throttle with motor body assembly (Click here).
REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY (Click here)
INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
Inspect the mass air flow meter sub-assembly (Click here).
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly (Click here).
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (Click here)
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
Inspect the engine coolant temperature sensor (Click here).
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (Click here).
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)
INSPECT CRANKSHAFT POSITION SENSOR
Inspect the crankshaft position sensor (Click here).
REPLACE CRANKSHAFT POSITION SENSOR (Click here)
REPLACE CAMSHAFT POSITION SENSOR
Replace the camshaft position sensor (Click here).
CHECK WHETHER DTC OUTPUT RECURS (DTC P3190, P3191 AND/OR P3193)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs (Click here).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) and turn the GTS on.
Put the engine in inspection mode (maintenance mode) (Click here).
Start the engine.
Allow the engine to idle for 10 seconds or more.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
Result | Proceed to |
---|---|
DTC P3190, P3191 and/or P3193 is output | A |
DTC is not output | B |
END
REPLACE ECM
Replace the ECM (Click here).
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs (Click here).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) and turn the GTS on.
Put the engine in inspection mode (maintenance mode) (Click here).
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.
END