Honda Civic Service Manual page 884

Electronic Gontrol System ('99 - 00 Modelsl
The electronic controt system conststs of a Powertrain control Module
(PCM). sensors, three linear solenoids and an
inhibitor solenoid. shifting is electronically controlled under all conditions A Grade
Logic control system to control shift-
ing in E position while the vehicle is ascending or descending a slope'
f n " p C V i r l o c a t e d b e l o w t h e d a s h b o a r d , u n d e r t h e k i c k p a n e l o n t h e p a s s e n g e r ' s s i d e '
The pCM controls the transmassion to reduce engine speed and retain the engine's
cooling efficiency when the vehicle is
driven with full throftle acceleration
lf the vehicle is continuously driven at lull throttle acceleration, the PCM regulates
the pulley hydraulic pressure to
increase the pulley ratio which. as the result, reduces the engine speed and retains
the designed cooling efficiency After
the vehicle has been driven at a lower engine speed for a while, the PCM increases
the pulley ratio to the original ratio'
i"i ".nl",rr starting in the E position, the PcM cuts off the ,Vc clutch
(if the A/c is on) and increases the engine speed to
900 rpm when the transmission is shifted to the E position'
The start clutch functions to make smooth starting possible. To let the start clutch
function properly, the PcM regulates
the start clutch hydraulic pressure based on the engine's negative
pressure memorized in the E position'
FCM
s*o.d.ry G..t Sh.h
(cont'd)
14-205