Negative Split Mode

In this mode the internal combustion engine is running but the generator motor is reducing the engine speed. This mode is never preferred but occurs when all of the following vehicle conditions are met:

• engine is running.
• vehicle speed is high.
• high voltage traction battery is charged.
• reducing engine throttle is not desired.
  Fig 1: Negative Split Mode Communication Diagram

  Courtesy of FORD MOTOR CO.