Dodge 2006 Sprinter, Manual

Page: 939 / 2315

con n ect ed in ser ies bet ween t h e in st r u m en t clu st er
a n d gr ou n d. Th e sea t belt swit ch a n d t h e sea t belt
in dica t or dr iver cir cu it t o t h e in st r u m en t clu st er ca n
be dia gn osed u sin g con ven t ion a l dia gn ost ic t ools a n d
m et h ods. F or pr oper dia gn osis of t h e ACM, t h e a ir-
ba g (SRS) in dica t or, or t h e in st r u m en t clu st er cir-
cu it r y
t h a t con t r ols t h e sea t belt in dica t or, a
dia gn ost ic sca n t ool is r equ ir ed. Refer t o t h e a ppr o-
pr ia t e dia gn ost ic in for m a t ion .
SPEEDOM ET ER
DESCRIPTION
A speedom et er 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 speedom et er is loca t ed in t h e cen -
t er of t h e in st r u m en t
clu st er. Th e speedom et er
con sist s of a m ova ble ga u ge n eedle or poin t er con -
t r olled by t h e in st r u m en t clu st er cir cu it r y a n d a fixed
210 degr ee pr im a r y ou t er sca le on t h e ga u ge dia l fa ce
t h a t r ea ds left -t o-r igh t eit h er fr om “0” t o “100” m iles-
per-h ou r, or fr om “0” t o “180” kilom et er s-per-h ou r,
depen din g u pon t h e m a r ket for wh ich t h e veh icle is
m a n u fa ct u r ed. E a ch ver sion a lso h a s a secon da r y
in n er sca le on t h e ga u ge dia l fa ce t h a t pr ovides t h e
equ iva len t opposit e u n it s fr om t h e pr im a r y sca le.
Text a ppea r in g on t h e clu st er over la y n ea r t h e left
en d of ea ch sca le a bbr evia t es t h e u n it of m ea su r e,
eit h er “m ph ” or “km /h ”.
Th e speedom et er gr a ph ics a r e wh it e a ga in st a
bla ck field, m a kin g t h em clea r ly visible wit h in t h e
in st r u m en t clu st er in da yligh t . Wh en illu m in a t ed
fr om beh in d by t h e pa n el la m ps dim m er con t r olled
clu st er illu m in a t ion ligh t in g wit h t h e ext er ior la m ps
t u r n ed On , t h e wh it e gr a ph ics a ppea r a m ber. Th e
or a n ge ga u ge n eedle is in t er n a lly illu m in a t ed. Ga u ge
illu m in a t ion is pr ovided by Ligh t E m it t in g Diode
(LE D) u n it s solder 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 speedom et er 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 speedom et er gives a n in dica t ion t o t h e veh icle
oper a t or of t h e veh icle r oa d speed. Th is ga u ge is con -
t r olled by 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 Con t r oller An t i-lock
Br a ke (CAB) over t h e Con t r oller Ar ea Net wor k
(CAN) da t a bu s. Th e speedom et er is a n a ir cor e m a g-
n et ic u n it t h a t r eceives ba t t er y cu r r en t on t h e in st r u -
m en t
clu st er elect r on ic cir cu it boa r d 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 e clu st er is pr ogr a m m ed t o
m ove t h e ga u ge n eedle ba ck t o t h e low en d of t h e
sca le a ft er t h e ign it ion swit ch is t u r n ed t o t h e Off
posit ion . Th e in st r u m en t clu st er cir cu it r y con t r ols
t h e ga u ge n eedle posit ion a n d pr ovides t h e followin g
fea t u r es:
•
Ve h ic le S p e e d Me s s a g e - E a ch t im e t h e clu s-
t er r eceives a veh icle speed m essa ge fr om t h e CAB it
will ca lcu la t e t h e cor r ect veh icle speed r ea din g a n d
posit ion t h e ga u ge n eedle a t t h a t r ela t ive speed posi-
t ion on t h e ga u ge sca le. Th e ga u ge n eedle will con -
t in u e t o be posit ion ed a t t h e a ct u a l veh icle speed
posit ion on t h e ga u ge sca le 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 .
•
Co m m u n ic a tio n Erro r - If t h e clu st er fa ils t o
r eceive a speedom et er m essa ge, it will h old t h e ga u ge
n eedle a t t h e la st in dica t ion for a bou t t h r ee secon ds,
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 posi-
t ion , wh ich ever occu r s fir st . Aft er t h r ee secon ds, t h e
ga u ge n eedle will r et u r n t o t h e left en d of t h e ga u ge
sca le.
Th e CAB con t in u a lly m on it or s t h e fou r wh eel
speed sen sor s t o det er m in e t h e veh icle r oa d speed.
Th e CAB t h en sen ds t h e pr oper veh icle speed m es-
sa ges t o t h e in st r u m en t clu st er. F or pr oper dia gn osis
of t h e wh eel speed sen sor s, t h e CAB, t h e CAN da t a
bu s, or t h e elect r on ic m essa ge in pu t s t o t h e in st r u -
m en t clu st er t h a t con t r ol t h e speedom et er, a dia gn os-
t ic sca n t ool is r equ ir ed. Refer t o t h e a ppr opr ia t e
dia gn ost ic in for m a t ion .
TACH OM ET ER
DESCRIPTION
A t a ch om et er 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 t a ch om et er is loca t ed t o t h e left of
t h e speedom et er, t o t h e left of cen t er in t h e in st r u -
m en t clu st er. Th e t a ch om et er con sist s of a m ova ble
ga u ge n eedle or poin t er con t r olled by t h e in st r u m en t
clu st er cir cu it r y a n d a fixed 45 degr ee sca le on t h e
ga u ge dia l fa ce t h a t r ea ds left -t o-r igh t fr om “0” t o “7”.
Th e t ext “r pm X 1000” im pr in t ed on t h e clu st er over-
la y n ea r t h e left en d of t h e ga u ge sca le iden t ifies t h a t
ea ch n u m ber on t h e t a ch om et er sca le is t o be m u lt i-
plied by 1000 r pm .
Th e t a ch om et er gr a ph ics a r e wh it e a ga in st a bla ck
field, m a kin g t h em clea r ly visible wit h in t h e in st r u -
m en t clu st er in da yligh t . Wh en illu m in a t ed fr om
beh in d by t h e pa n el la m ps dim m er con t r olled clu st er
illu m in a t ion ligh t in g wit h t h e ext er ior la m ps t u r n ed
On , t h e wh it e gr a ph ics a ppea r a m ber. Th e or a n ge
ga u ge n eedle is in t er n a lly illu m in a t ed. Ga u ge illu m i-
n a t ion is pr ovided by Ligh t E m it t in g Diode (LE D)
u n it s solder 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 t a ch om et er 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 t a ch om et er gives a n in dica t ion t o t h e veh icle
oper a t or of t h e en gin e speed. Th is ga u ge is con t r olled
by 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
VA INSTRUMENT CLUSTER 8J - 25