Up to 08/2009
2GR-FXE ENGINE CONTROL: SFI SYSTEM: P3190,P3191,P3193: Poor Engine Power
P3193 - Fuel Run Out
DESCRIPTION
From the power management control ECU (HV CPU), 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 engine speed), and whether the engine is in start mode or not. Then, based on the required output and target engine 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.
MONITOR DESCRIPTION
The ECM and power management control ECU (HV CPU) are connected by a communication line called CAN. The ECM sends engine speed data and other data to the power management control ECU (HV CPU) while the power management control ECU (HV CPU) 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 power management control ECU (HV CPU) is normal and the following items become a specified condition, the ECM illuminates the MIL and sets a DTC.
- Engine speed
- Target torque
- Ratio of target torque against estimated torque
- 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 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 Techstream. 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
1. CHECK OTHER DTC 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 other codes besides P3190, P3191 and/or P3193 are output, perform troubleshooting for 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 Testing and Inspection.
OK:
No leaks in 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 Testing and Inspection.
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 6112
Standard:
Actual Engine Torque is 60% or more of the requested torque.
Result:
B -- INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
A -- Continue to next step.
7. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY
(a) Inspect the throttle with motor body assembly On-Vehicle Inspection.
NG -- REPLACE THROTTLE WITH MOTOR 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 On-Vehicle 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 Testing and Inspection.
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. PERFORM TECHSTREAM (CONTROL THE EGR STEP POSITION)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Put the engine in inspection mode Component Tests and General Diagnostics.
(e) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more.
HINT
The A/C switch and all accessory switches should be off.
(f) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position.
(g) Confirm 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 Active Test is completed.
OK:
MAP and idling condition change in response to EGR step position as follows.
Standard:
HINT
During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in EGR valve.
Result:
B -- CHECK FUEL LINE
A -- Continue to next step.
12. INSPECT EGR VALVE ASSEMBLY
(a) Remove the EGR valve assembly Removal.
(b) Check if the EGR valve is stuck open.
OK:
EGR valve is tightly closed.
(c) Reinstall the EGR valve assembly Installation.
NG -- REPLACE EGR VALVE ASSEMBLY
OK -- Continue to next step.
13. REPLACE ECM
(a) Replace the ECM Removal.
NEXT -- Continue to next step.
14. CONFIRM WHETHER DTC 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 DTC DTC Check / Clear.
(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 / 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 -- REPLACE FUEL PUMP Removal
OK -- REPAIR OR REPLACE FUEL LINE