Dodge 2006 Sprinter, Manual

Page: 935 / 2315

n ext r equ ir ed en gin e oil m a in t en a n ce is a n t icipa t ed.
ASSYST a lso pr ovides sever a l a u dible in dica t ion s
u sin g t h e elect r on ic t on e gen er a t or on t h e in st r u m en t
clu st er cir cu it boa r d t o su pplem en t t h ese visu a l dis-
pla ys.
Th e in dica t ion s of t h e ASSYST en gin e oil m a in t e-
n a n ce in dica t or a r e n ot visible wh en t h e LCD is n ot
illu m in a t ed. Wh en illu m in a t ed, t h e ASSYST in dica -
t ion s a ppea r a s da r k ch a r a ct er s a n d icon s silh ou et t ed
a ga in st a n a m ber field. Wh en t h e ext er ior ligh t in g is
t u r n ed Off, t h e displa y is illu m in a t ed a t m a xim u m
br igh t n ess. Wh en t h e ext er ior ligh t in g is t u r n ed On ,
t h e displa y illu m in a t ion level ca n be a dju st ed in con -
cer t wit h t h e clu st er gen er a l illu m in a t ion ligh t in g
u sin g t h e “+” (plu s) a n d “
"
” (m in u s) m u lt i-fu n ct ion
in dica t or pu sh bu t t on s. Th e ASSYST en gin e oil m a in -
t en a n ce in dica t or is ser viced a s a u n it wit h t h e
in st r u m en t clu st er.
OPERATION
Th e ASSYST en gin e oil m a in t en a n ce in dica t or
m icr opr ocessor u ses n u m er ou s cr it er ia besides t im e
a n d m ilea ge t o eva lu a t e veh icle m a in t en a n ce r equ ir e-
m en t s. Tim e da t a is t a ken fr om t h e elect r on ic digit a l
clock in t egr a l t o t h e in st r u m en t clu st er. Veh icle dis-
t a n ce da t a is obt a in ed fr om t h e Con t r oller An t ilock
Br a ke (CAB) over t h e Con t r oller Ar ea Net wor k
(CAN) da t a bu s. Coola n t t em per a t u r e, en gin e oil
t em per a t u r e, en gin e oil level, en gin e oil qu a lit y,
en gin e speed, a n d en gin e loa d da t a a r e obt a in ed fr om
t h e E n gin e Con t r ol Modu le (E CM) over t h e CAN
da t a bu s. Usin g a ll of t h e a va ila ble da t a a n d in t er n a l
pr ogr a m m in g, t h e ASSYST m icr opr ocessor t h en ca l-
cu la t es t h e est im a t ed t im e a n d dist a n ce t o t h e n ext
r equ ir ed
en gin e oil m a in t en a n ce in t er va l. Th e
ASSYST u ses t h e m u lt i-fu n ct ion in dica t or LCD t o
displa y t h a t da t a a n d, wh en n ecessa r y, issu es a u dible
a ler t s t o t h e veh icle oper a t or t h r ou gh t h e elect r on ic
t on e gen er a t or on t h e clu st er cir cu it boa r d.
See t h e own er ’s m a n u a l in t h e veh icle glove box for
m or e in for m a t ion on t h e fea t u r es, u se, oper a t ion a n d
r eset t in g pr ocedu r es for t h e ASSYST m a in t en a n ce
com pu t er.
P r oper dia gn osis a n d t est in g of t h e
ASSYST en gin e oil m a in t en a n ce com pu t er, t h e CAN
da t a bu s a n d t h e elect r on ic da t a bu s m essa ge in pu t s
t o t h e E MIC t h a t a r e u sed by t h e ASSYST com pu t er
for it s ca lcu la t ion s r equ ir es t h e u se of a dia gn ost ic
sca n t ool. Refer t o t h e a ppr opr ia t e dia gn ost ic in for-
m a t ion .
M ALFU N CT I ON I N DI CAT OR
LAM P (M I L)
DESCRIPTION
A Ma lfu n ct ion In dica t or La m p (MIL) is st a n da r d
equ ipm en t on a ll in st r u m en t clu st er s. Th e MIL is
loca t ed n ea r t h e lower edge of t h e in st r u m en t clu st er,
t o t h e r igh t of t h e m u lt i-fu n ct ion in dica t or displa y.
Th e MIL con sist s of t h e In t er n a t ion a l Con t r ol a n d
Displa y Sym bol icon for “E n gin e” im pr in t ed wit h in a
r ect a n gu la r cu t ou t in t h e opa qu e la yer of t h e in st r u -
m en t clu st er over la y. Th e da r k ou t er la yer of t h e
over la y pr even t s t h e in dica t or fr om bein g clea r ly vis-
ible wh en it is n ot illu m in a t ed. An a m ber Ligh t
E m it t in g Diode (LE D) beh in d t h e cu t ou t in t h e
opa qu e la yer of t h e over la y ca u ses t h e icon t o a ppea r
silh ou et t ed a ga in st a n a m ber field t h r ou gh t h e t r a n s-
lu cen t ou t er la yer of t h e over la y wh en t h e in dica t or
is illu m in a t ed fr om beh in d by t h e LE D, wh ich is sol-
der ed on t o t h e in st r u m en t clu st er elect r on ic cir cu it
boa r d. Th e MIL is ser viced a s a u n it wit h t h e in st r u -
m en t clu st er.
OPERATION
Th e Ma lfu n ct ion In dica t or La m p (MIL) gives a n
in dica t ion t o t h e veh icle oper a t or wh en t h e E n gin e
Con t r ol Modu le (E CM) h a s r ecor ded a Dia gn ost ic
Tr ou ble Code (DTC) for a n On -Boa r d Dia gn ost ics II
(OBDII) em ission s-r ela t ed cir cu it or com pon en t m a l-
fu n ct ion . Th e MIL is con t r olled by a t r a n sist or on t h e
in st r u m en t clu st er cir cu it boa r d ba sed u pon clu st er
pr ogr a m m in g a n d elect r on ic m essa ges r eceived by
t h e clu st er fr om t h e E CM over t h e Con t r oller Ar ea
Net wor k (CAN) da t a bu s. Th e MIL Ligh t E m it t in g
Diode (LE D) is com plet ely con t r olled by t h e in st r u -
m en t clu st er logic cir cu it , a n d t h a t logic will on ly
a llow t h is in dica t or t o oper a t e wh en t h e in st r u m en t
clu st er det ect s t h a t t h e ign it ion swit ch is in t h e On
posit ion . Th er efor e, t h e LE D will a lwa ys be off wh en
t h e ign it ion swit ch is in a n y posit ion except On . Th e
LE D on ly illu m in a t es wh en it is pr ovided a pa t h t o
gr ou n d by t h e in st r u m en t clu st er t r a n sist or. Th e
in st r u m en t clu st er will t u r n on t h e MIL for t h e fol-
lowin g r ea son s:
•
B u lb Te s t - E a ch t im e t h e ign it ion swit ch is
t u r n ed t o t h e On posit ion t h e MIL is illu m in a t ed a s a
bu lb t est . Th e in dica t or will r em a in illu m in a t ed u n t il
t h e en gin e is st a r t ed, or u n t il t h e ign it ion swit ch is
t u r n ed t o t h e Off posit ion , wh ich ever occu r s fir st .
•
MIL La m p -On Me s s a g e - E a ch t im e t h e clu s-
t er r eceives a MIL la m p-on m essa ge fr om t h e E CM,
t h e in dica t or will be illu m in a t ed. Th e in dica t or will
r em a in
illu m in a t ed u n t il t h e det ect ed fa u lt is
r epa ir ed, or u n t il t h e ign it ion swit ch is t u r n ed t o t h e
Off posit ion , wh ich ever occu r s fir st . F or m or e in for-
m a t ion on t h e E CM a n d t h e DTC set a n d r eset
pa r a m et er s, (Refer t o 25 - E MISSIONS CONTROL -
OP E RATION).
•
Co m m u n ic a tio n Erro r - If t h e clu st er r eceives
n o la m p-on or la m p-off m essa ge fr om t h e E CM, t h e
MIL is illu m in a t ed by t h e in st r u m en t clu st er. Th e
in dica t or r em a in s con t r olled a n d illu m in a t ed by t h e
clu st er u n t il a va lid la m p-on or la m p-off m essa ge is
r eceived fr om t h e E CM.
VA INSTRUMENT CLUSTER 8J - 21