Contents Wiring diagrams Section: Automatic Transmission (Except Hybrid & V6) All sections

Shift Control Honda Accord VII facelift

Shift Control

The PCM instantly determines which gear should be selected by various signals sent from sensors and switches, and it actuates the shift solenoid valves A, B, C, D, and E to control shifting.

Also, a grade logic control system has been adopted to control shifting in D and D3 positions. The PCM compares actual driving conditions with memorized driving conditions, based on the input from the throttle position sensor (2003-2005 models), the accelerator pedal position sensor (2006 model), the engine coolant temperature sensor, the barometric pressure sensor, the brake pedal position switch signal, and the shift lever position signal, to control shifting while the vehicle is ascending or descending a slope.

Scheme 388

Scheme 388: Shift Control

The PCM turns the shift solenoid valves A, B, C, D, and E ON and OFF to control transmission gear shifting. The combination of driving signals to shift solenoid valves A, B, C, D, and E are shown in the table.

PositionGear positionShift solenoid valves
ABCDE
D, D3Shifting from N positionOFFONONOFFOFF
Stays in 1stONONONOFFOFF
Shifting gears between 1st and 2ndOFFONONOFFOFF
Stays in 2ndOFFONOFFONOFF or ON
Shifting gears between 2nd and 3rdOFFONONONOFF or ON
Stays in 3rdOFFOFFONOFFOFF or ON
DShifting gears between 3rd and 4thOFFOFFOFFOFFOFF or ON
Stays in 4thONOFFOFFOFFOFF or ON
Shifting gears between 4th and 5thONOFFOFFONOFF or ON
Stays in 5thONOFFONONOFF or ON
22nd gearOFFONOFFONOFF
11st gearONONONOFFOFF
RShifting from P and N positionOFFONOFFOFFON
Stays in reverseONONOFFOFFON
Reverse inhibitOFFOFFONOFFOFF
PParkOFFONOFFOFFON
NNeutralOFFONONOFFOFF

GEAR POSITION AND SHIFT SOLENOID VALVE CONDITION SPECIFICATIONS