Honda ACCORD HYBRID 2005 Service Manual page 875

Shift Control
The PCM Instantly determines w h i c h gear should be selected by various signals sent f r o m sensors and switches, and
it actuates the shift solenoid valves A, B, C, and D to control shifting transmission gear.
The shift solenoid valves have t w o types:
• Shift solenoid valves A and D use ON-OPEN/OFF-CLOSE type; shift solenoid valve opens the port of shift solenoid
valve pressure w h i l e shift solenoid valve is turned ON by the PCM, and closes the port w h e n shift solenoid valve is
OFF.
• Shift solenoid valves B and C use ON-CLOSE/OFF-OPEN t y p e ; shift solenoid valve closes the port of shift solenoid
valve pressure w h i l e shift solenoid valve is turned ON by the PCM, and opens the port w h e n shift solenoid valve is
OFF.
The c o m b i n a t i o n of driving signals to shift solenoid valves A, B, C, and D are s h o w n in the table.
Position Gear Position Shift Solenoid Valve
A B C D
D and D3 Shifting f r o m the N position OFF ON OFF
OFF
Stays in 1st OFF ON ON OFF or ON
Shifting gears between 1 st and 2nd ON ON ON OFF or ON
Stays in 2nd
ON ON OFF OFF or ON
Shifting gears between 2nd and 3rd ON ON ON OFF or ON
Stays in 3rd ON OFF ON OFF or ON
D Shifting gears between 3rd and 4th ON OFF OFF OFF or ON
Stays in 4th OFF OFF OFF OFF or ON
Shifting gears between 4th and 5th OFF OFF ON OFF or ON
Stays in 5th OFF ON ON OFF or ON
2 2nd ON ON OFF OFF or ON
1 1st OFF ON ON OFF
N Neutral OFF ON OFF
OFF
R Shifting f r o m the P and N positions OFF ON OFF ON
Stays in reverse ON ON OFF ON
Reverse inhibit control OFF ON OFF OFF
P Park OFF ON OFF ON
The vehicle starts off in 1st, then 2nd in a f e w seconds w h e n the shift lever is shifted into the D or D3 position f r o m the
N, shifts automatically to 3rd, 4th, and 5th, and downshifts t h r o u g h 4th, 3rd, and 2nd in the D position; shifts
automatically to 3rd, and downshifts to 2nd in the D3 position. The vehicle usually restarts off in 2nd in the D or D3
position. The vehicle can start in 1st gear in the D or D3 position, w h e n y o u accelerate the vehicle f r o m a stop at half
throttle and more, and w h e n you accelerate the vehicle at the instant of shifting the shift lever into the D or D3 position
f r o m the N.
(cont'd)
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