Dodge Sprinter 2006 Manual page 2163

3-4 s o le n o id - Th e 3-4 solen oid is a ct iva t ed wh en
t h e TCM det er m in es t h a t t h e t r a n sm ission m u st
sh ift in t o or ou t of 4t h gea r. Th e solen oid is on ly
a ct iva t ed du r in g t h e sh ift in g of t h e t r a n sm ission .
Wh en t h e solen oid is a ct iva t ed, h ydr a u lic pr essu r e
is a pplied t o t h e pr oper sh ift elem en t s in t h e t r a n s-
m ission t o a llow t h e desir ed sh ift . On ce t h e sh ift is
com plet ed, t h e solen oid is t u r n ed off.
TCC s o le n o id - Th e TCC solen oid is a ct iva t ed
wh en t h e TCM det er m in es t h a t t h e Tor qu e con -
ver t er clu t ch sh ou ld be a ct iva t ed. Th e TCC clu t ch is
a va r ia ble slip t or qu e clu t ch t h a t a llows con t r ol of
t or qu e con ver t er slip fr om 5% t o 95.5% of fu ll TCC
en ga gem en t . Th e clu t ch is con t r olled by t h e TCC
solen oid wh ich is pu lse widt h m odu la t ed (P WM) t o
pr ovide t h e desir ed a m ou n t of slip.
S h ift P re s s u re S o le n o id - Th e Sh ift P r essu r e
Solen oid is a ct iva t ed wh en t h e TCM det er m in es
t h a t a t r a n sm ission sh ift is r equ ir ed. Th e solen oid
is P WM con t r oller t o a llow t h e pr oper a m ou n t of
h ydr a u lic pr essu r e t o t h e sh ift elem en t s. Th e sole-
n oid is on ly a ct iva t ed du r in g t h e sh ift in g of t h e
t r a n sm ission . Wh en t h e solen oid is a ct iva t ed, h y-
dr a u lic pr essu r e is r em oved fr om t h e pr oper sh ift
elem en t s t o a llow t h e desir ed sh ift . On ce t h e sh ift is
com plet ed, t h e solen oid is t u r n ed off.
Mo d u la tio n p re s s u re s o le n o id - Th e m odu la t ion
pr essu r e is a lwa ys a ct ive. Th e solen oid is pu lse
widt h m odu la t ed (P WM) con t r olled a n d is u sed t o
m odu la t e t h e h ydr a u lic syst em pr essu r e t o t h e
desir ed pr essu r e.
3.2.4 TRANSMISSION COMPONENT
DESCRIPTIONS
S h ift As s e m bly
Th e Sh ift Lever Select or t r a n sm it s a ll select or lever
posit ion s, a s well a s select ed sh ift r a n ges t o t h e
TCM over t h e CAN Bu s. At t h e sa m e t im e, t h e
select or lever posit ion s P, R, N, a n d D a r e t r a n sm it -
t ed by a ca ble t o t h e select or lever sh a ft in t h e
t r a n sm ission .
B ra k e s h ift in te r-lo c k
To pr even t u n a u t h or ized sh ift in g ou t of t h e pa r k
posit ion , t h e Select or lever is locked in t h e P a r k
posit ion u n t il t h e ign it ion key is t u r n ed t o t h e r u n
posit ion a n d t h e br a ke peda l is pr essed. Th is will
a llow t h e dr iver t o sh ift ou t of t h e pa r k posit ion .
Re v e rs e La m p Ou tp u t
Th e Rever se Ligh t Swit ch is in t egr a t ed in t o t h e
sh ift er m odu le a n d con t r ols t h e r ever se ligh t s.
Re v e rs e In h ibito r
Th e Sh ift Lever Assem bly con st a n t ly m on it or s ABS
wh eel speed t o pr even t s a n in a dver t en t select ion of
r ever se a t speeds a bove a ppr oxim a t ely 6.4 Km /h
GEN ERAL I N FORM AT I ON
(4MP H ). Th e Rever se in h ibit or is pa r t of t h e Sh ift
Lever Assem bly a n d is con t r olled by t h e Sh ift Lever
Assem bly m odu le.
Tra n s te m p s e n s o r - P /N S w itc h c irc u it
Th e TCM will det ect t h e select or lever in pa r k a n d
n eu t r a l posit ion s. Th e TCM does t h is by m on it or in g
t h e Tr a n sm ission t em per a t u r e sen sor sign a l a lon g
wit h t h e sh ift er posit ion sign a ls. Th e P /N swit ch
con t a ct is oper a t ed by a ca m loca t ed in t h e t r a n s-
m ission wh ich , open s a r eed con t a ct swit ch t h a t is
wir ed in ser ies wit h t h e t r a n sm ission t em per a t u r e
sen sor. Wh en t h e P /N con t a ct swit ch is open ed in
pa r k a n d n eu t r a l, t h e TCM sen ses a h igh t r a n sm is-
sion t em per a t u r e. Con fir m in g t h e P /N swit ch st a -
t u s. Not e: In pa r k or n eu t r a l, t h e TCM u ses en gin e
t em per a t u r e (t o a void set t in g a DTC). Th e TCM
sen ds a h a r dwir ed sign a l t o t h e E CM t h a t will a llow
t h e E CM con t r olled st a r t cir cu it t o en ga ge in P or N
on ly. Th e TCM a lso sen ds a P /N bu s m essa ge t o t h e
E CM t o con fir m t h e P /N swit ch st a t u s.
Th e N o rm a l Tra n s m is s io n Te m p e ra tu re S e n s o r
re s is ta n c e is be tw e e n 500.0 a n d 2500.0 o h m s .
Th e n o rm a l v o lta g e lim its fo r th e tra n s m is -
s io n te m p e ra tu re s e n s o r, a re be tw e e n 0.5 a n d
3.0 v o lts .
In p u t S p e e d S e n s o rs
Th e NAG1 t r a n sm ission h a s t wo in pu t speed sen -
sor s N2 a n d N3, bot h speed sen sor s a r e loca t ed on
t h e va lve body a n d r epor t DTC's for t h e in pu t speed
sen sor s er r or s. Th e speed sen sor s a r e H a ll E ffect
speed sen sor s t h a t a r e u sed by t h e TCM t o ca lcu la t e
t h e t r a n sm ission s in pu t speed. Sin ce t h e in pu t
speed cou ld n ot be m ea su r ed dir ect ly, t wo of t h e
dr ive elem en t s a r e m ea su r ed. Two in pu t speed
sen sor s wer e r equ ir ed beca u se bot h dr ive elem en t s
a r e n ot a ct ive in a ll gea r s. Th e in pu t sen sor s N2 a n d
N3 will r epor t t h e sa m e in pu t speed in gea r s 2n d,
3r d or 4t h . If t h e N2 a n d N3 in pu t speed sign a ls a r e
n ot t h e sa m e in t h ese gea r s t h en t h er e is a n issu e
wit h t h e t r a n sm ission a n d t h e DTC In pu t Sen sor s
Mism a t ch will be set .
Th e N3 in pu t speed is n ot r epor t ed in 1st a n d 5t h
gea r s. Th e N2 sen sor is n ot r epor t ed in Rever se.
Th e In pu t Speed Sen sor Over speed is a r a t ion a lit y
ch eck t h a t is in t en ded t o in dica t e a m a jor t r a n sm is-
sion fa ilu r e a n d will ca u se a loss of dr ive (pla ce t h e
t r a n sm ission in Neu t r a l)
Ou tp u t S p e e d S e n s o r (AB S s ig n a l)
Th e NAG1 t r a n sm ission does n ot h a ve a n ou t pu t
sh a ft speed sen sor. Th e TCM u ses t h e ABS (An -
t ilock Br a ke Syst em ) Wh eel Speed sen sor in for m a -
t ion , it r eceives over t h e CAN bu s, t o ca lcu la t e t h e
t r a n sm ission s ou t pu t sh a ft speed. Th e TCM m on i-
t or s t h e ABS syst em for fu n ct ion a lit y a n d r epor t s
ABS speed sen sor a n d com m u n ica t ion DTCs, wh ich
will a ffect pr oper t r a n sm ission oper a t ion .
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