Emission Control; O N-B Oard D Iag N Ostic System (C Alifornia M Odels Only) - Mercedes-Benz 300 TE Owner's Manual

Emission Control

C ertain sys te m s o f th e en gine serve
to keep th e to x ic c o m p o n e n ts o f the
exh au st gases w ith in p e rm is s ib le lim ­
its re q u ire d by law.
These system s, o f co u rse , w ill fu n c ­
tio n p ro p e rly only w h en m aintained
s tric tly a c c o rd in g to fa c to ry s p e c ific a ­
tio n s . A n y a d ju s tm e n ts on th e en gine
sho uld, th e re fo re , be ca rrie d o u t only
by qualified M E R C E D E S -B E N Z te c h ­
nicians. The a d ju s tm e n ts o f the
engine s h o u ld n o t be a lte red in any
way. M ore ove r, the s p e c ifie d service
and m ainten ance jo b s m u s t be c a r­
ried o u t re g ularly a c c o rd in g to
M E R C E D E S -B E N Z se rvicin g re q u ire ­
m ents. F or d e tails re fe r to th e M a in te ­
nance B oo kle t.
72
W arning!
Inhalation of exhaust gas is
hazardous to your health. All
exhaust gas contains carbon
m onoxide, and inhaling it can
cause unconsciousness and lead
to death.
Do not run th e engine in confined
areas (such as a g arage) which
are not properly ven tilated . If you
think th a t exhaust gas fum es are
entering th e vehicle w hile driving,
have the cause determ ined and
co rrected im m ediately. If you
m ust drive under th ese c o n d i­
tions, drive only w ith at lea st one
w indow fully open.
O n-B oard D iag n ostic System
(C alifornia m odels only)
The CIS-E c o n tro l u n it m o n ito rs e m is ­
sion c o n tro l c o m p o n e n ts th a t e ith e r
p ro vid e in p u t signals to o r receive
o u tp u t sig na ls fro m the c o n tro l unit.
M a lfu n c tio n s re s u ltin g fro m in te rru p ­
tio n s o r failure o f any o f th e s e c o m p o
ne n ts are in d ica te d by th e " CH ECK
E N G IN E " in d ic a to r lam p in th e in s tru ­
m en t c lu s te r and are sim u lta n e o u s ly
s to re d in th e CIS-E c o n tro l unit.
If the " C H ECK E N G IN E " in d ic a to r
lam p c o m e s on, have th e system
c h e c k e d at y o u r a u th o rize d
M E R C E D E S -B E N Z d e aler at th e firs t
o p p o rtu n ity .
A n o n -b o a rd te s t c o n n e c tio n w ith
p u s h b u tto n and lig h t e m ittin g diod e
(LED) is lo ca te d on the en gine c o m ­
p a rtm e n t firew all, allow in g th e a c c u ­
rate d e te c tio n o f system m a lfu n c ­
tio n s.