P3190
2AZ-FXE ENGINE CONTROL: SFI SYSTEM: P3190, P3191, P3193: Poor Engine Power
P3193 - Fuel Run Out
DESCRIPTION
From the hybrid vehicle control ECU, the ECM (included in hybrid vehicle control ECU) 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 (included in hybrid vehicle control ECU) 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.
MONITOR DESCRIPTION
The ECM (included in hybrid vehicle control ECU) and hybrid vehicle control ECU are connected by a communication line called CAN. The ECM (included in hybrid vehicle control ECU) 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 (included in hybrid vehicle control ECU) using the CAN communication line. When the communication between the ECM (included in hybrid vehicle control ECU) and hybrid vehicle control ECU is normal and the following items become a specified condition, the ECM (included in hybrid vehicle control ECU) illuminates the MIL and sets a DTC.
1. Engine speed
2. Target torque
3. Ratio of target torque against estimated torque
4. Fuel level
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
P3190
P3191
INSPECTION PROCEDURE
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 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 Techstream. The hybrid vehicle control ECU 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)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Read the DTCs.
Result:
HINT
If any DTCs other than P3190, P3191 and P3193 are output, troubleshoot those DTCs first.
B -- GO TO DTC CHART SFI System
A -- Continue to next step.
2. CHECK SHORTAGE OF FUEL
NG -- REFILL FUEL
OK -- Continue to next step.
3. CHECK INTAKE SYSTEM
(a) Check the intake system for vacuum leaks Intake System.
OK:
No leaks in the intake system.
NG -- REPAIR OR REPLACE INTAKE SYSTEM
OK -- Continue to next step.
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 -- Continue to next step.
5. CHECK FUEL PRESSURE
(a) Check the fuel pressure Fuel System.
NG -- CHECK FUEL LINE
OK -- Continue to next step.
6. INSPECT FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT Trouble Codes / Freeze Frame Data.
(e) 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:
B -- INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
A -- Continue to next step.
7. INSPECT THROTTLE BODY ASSEMBLY
(a) Inspect the throttle body assembly Inspection.
NG -- REPLACE THROTTLE BODY ASSEMBLY Removal
OK -- Continue to next step.
8. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
(a) Inspect the mass air flow meter sub-assembly Inspection.
NG -- REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Removal
OK -- Continue to next step.
9. INSPECT ENGINE COOLANT TEMPERATURE SENSOR
(a) Inspect the engine coolant temperature sensor Removal.
NG -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR Removal
OK -- Continue to next step.
10. INSPECT CRANKSHAFT POSITION SENSOR
(a) Inspect the crankshaft position sensor Testing and Inspection.
NG -- REPLACE CRANKSHAFT POSITION SENSOR Removal
OK -- Continue to next step.
11. INSPECT CAMSHAFT POSITION SENSOR
(a) Inspect the camshaft position sensor Testing and Inspection.
NG -- REPLACE CAMSHAFT POSITION SENSOR Removal
OK -- Continue to next step.
12. CHECK WHETHER DTC OUTPUT RECURS (DTC P3190, P3191 OR P3193)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Turn the power switch off.
(f) Turn the power switch on (IG) and turn the Techstream on.
(g) Put the engine in inspection mode Component Tests and General Diagnostics.
(h) Start the engine.
(i) Allow the engine to idle for 10 seconds or more.
(j) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
(k) Read the pending DTCs.
Result:
B -- END
A -- Continue to next step.
13. REPLACE HYBRID VEHICLE CONTROL ECU
(a) Replace the hybrid vehicle control ECU Removal.
NEXT -- Continue to next step.
14. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Turn the power switch off and wait for at least 30 seconds.
(f) Turn the power switch on (IG) and turn the Techstream on.
(g) Put the engine in inspection mode Component Tests and General Diagnostics.
(h) Start the engine.
(i) Allow the engine to idle for 10 seconds or more.
(j) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(k) Input the DTC: P3190, P3191 or P3193.
(l) Check the DTC judgment result.
NEXT -- END
15. CHECK FUEL LINE
(a) Check the fuel lines for leaks or blockage.
NG -- REPAIR OR REPLACE FUEL LINE
OK -- REPLACE FUEL PUMP Removal