P3193

DTC P3190 Poor Engine Power
DTC P3191 Engine does not Start
DTC P3193 Fuel Run Out

DESCRIPTION

DTC Detection Condition:

From the hybrid vehicle 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 RPM of control target (target RPM), and whether the engine is in start mode or not. Then, based on the required output and target RPM, 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 water temperature, an abnormal condition is detected.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM and hybrid vehicle control ECU are connected by a communication line called CAN. The ECM 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 using the CAN communication line. When the communication between the ECM and hybrid vehicle control ECU is normal and the following items become a specified condition, the ECM illuminates the MIL and sets a DTC.

1. Engine speed
2. Power switch
3. Target torque
4. Ratio of target torque against estimated torque
5. Fuel level

Step 1:

Step 1(Continued)-5:

Step 5(Continued)-8:

Step 8(Continued)-12:

Step 12(Continued):

INSPECTION PROCEDURE

HINT: 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.