BLIPPING Control

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

It controls (synchronizes) engine speed to have a quick shift clutch coupling, by calculating engine speed after downshifting and by cooperating with ASC (Adaptive Shift Control).

"BLIPPING CONTROL" functions.
- When downshifting by accelerator pedal depression.
- When downshifting by the manual mode.
- It works on shift-down operation by ASC at high speed side when driving at D position or in DS mode.
  
  Fig 1: Downshifting By Accelerator Pedal Depression And Downshifting By Manual Mode Graph
  Courtesy of NISSAN NORTH AMERICA, INC.
TCM selects "BLIPPING CONTROL" or "NORMAL SHIFT CONTROL" according to the gear position, the selector lever position, the engine torque and the speed when accelerating by pedal depression.
Engine speed control demand signal is transmitted from TCM to ECM under "BLIPPING CONTROL".
ECM synchronizes the engine speed according to the engine speed control demand signal.

Fig 2: Downshifting By Accelerator Pedal Depression Pattern
Courtesy of NISSAN NORTH AMERICA, INC.

Fig 3: Downshifting By Accelerator Pedal Depression Pattern (Manual Mode)
Courtesy of NISSAN NORTH AMERICA, INC.