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.

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