Speed Control System - Dodge D150 1990 Service Manual

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SPEED CONTROL SYSTEM 8H - 1
SPEED CONTROL SYSTEM
C O N T E N T S
Page
SERVICE PROCEDURES . . . . . . . . . . . . . . 9
GENERAL INFORMATION
The speed control system i s electrically actuated
and vacuum operated. T h e m u l t i f u n c t i o n control le-
ver o n t h e steering c o l u m n incorporates a slide
switch w h i c h has three positions OFF,, O N , and RE-
S U M E . The SET b u t t o n i s located afethe end of t h e
three position slide switch. T h i s system i s designed
to operate a t speeds above approximately 35. m p h
(58km/h).
WARNING: THE USE OF "SPEED CONTROL" IS
NOT RECOMMENDED WHEN DRIVING CONDITIONS
DO NOT PERMIT MAINTAINING A CONSTANT
SPEED, SUCH AS IN HEAVY TRAFFIC OR ON
ROADS THAT ARE WINDING, ICY, SNOW COVERED
OR SLIPPERY.
To e n g a g e : W h e n t h e desired speed i s achieved,
push and release the SET b u t t o n t o t u r n o n and en-
gage the system. Remove foot f r o m accelerator. Speed
w i l l be m a i n t a i n e d a t t h i s level. M o v i n g t h e slide
switch from O F F t o O N w h i l e t h e vehicle i s i n mo-
t i o n establishes memory w i t h o u t system engagement.
Page
TEST PROCEDURES . . . . . . . . . . . . . . . . . . . . . . 5
To d i s e n g a g e : N o r m a l brake application or a soft
t a p o n t h e brake pedal w i l l disengage control u n i t
w i t h o u t erasing speed memory. M o v i n g t h e slide
s w i t c h t o t h e O F F position or t u r n i n g the i g n i t i o n
O F F also disengages t h e system and i n a d d i t i o n
erases the speed memory.
T o r e s u m e a f t e r b r e a k i n g : M o m e n t a r i l y move
slide switch t o R E S U M E . Vehicle w i l l resume t o t h e
previously memorized speed.
To v a r y s p e e d s e t t i n g : To increase speed, depress
accelerator t o desired speed and m o m e n t a r i l y push
a n d release SET b u t t o n .
W h e n speed control system is engaged, t a p p i n g
SET b u t t o n w i l l increase speed setting b y approxi-
m a t e l y 2 m p h .
To decrease speed, t a p brake pedal l i g h t l y disen-
gaging system. When desired speed has been ob-
t a i n e d push a n d release S E T button. Decrease i n
speed can also be a t t a i n e d b y holding S E T b u t t o n
against stop u n t i l desired speed is attained. Releas-
i n g t h e b u t t o n engages the system a t t h a t speed.
T o a c c e l e r a t e f o r p a s s i n g : Depress accelerator as
needed. W h e n passing is completed, release accelera-
t o r a n d vehicle w i l l r e t u r n t o previous speed setting.
There may be a s l i g h t (3-7 mph) speed loss before the
vehicle recovers t o the set speed.