Technician Handbook 601 Hybrid Systems for Collision Repair Hybrid System Components (cont.) HV Battery • Supplies MG2 during start-off, acceleration and uphill driving • Stores energy for later use Frame Wire • Passes high-voltage DC between the inverter and HV battery Aux.
Battery • Stores 12 V for auxiliary systems HV EVU • Calculates the torque and output power required to meet driver need • Sends the results to the ECM and other ECUs • Called HV ECU, THS ECU or Hybrid Vehicle Control ECU depending on model ECM • Receives engine output request from the HV ECU • Outputs a throttle opening command to the electronically controlled throttle body • On some vehicles, the ECM is incorporated into the HV ECU Skid Control ECU • Controls the brake system, including regenerative braking which uses MG2 to recover energy during deceleration Collision Repair & Refinish Training 7