Crankshaft Position Sensor; Fuel Injector - Dodge Sprinter 2006 Manual

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(3) In st a ll en gin e cover.
(4) Recon n ect n ega t ive ba t t er y ca ble.
CRAN K SH AFT POSI T I ON SEN -
SOR
DESCRIPTION
Th e cr a n ksh a ft posit ion sen sor is loca t ed opposit e
t h e t eet h on t h e flywh eel a n d u ses a n on con t a ct
m et h od t o r ecor d t h e posit ion of t h e cr a n ksh a ft . Th e
lea din g edges of ea ch t oot h on t h e flywh eel gen er a t e
a posit ive sign a l in t h e posit ion sen sor, wh ile t h e
t r a ilin g edges gen er a t e a n ega t ive sign a l. Wh en t h e
cr a n ksh a ft is r ot a t in g, a n a lt er n a t in g volt a ge is pr o-
du ced a s a r esu lt .
Th e per iod of t h e sign a l is t h e t im e r equ ir ed by t h e
cr a n ksh a ft t o t u r n t h r ou gh t h e ga p bet ween t wo fly-
wh eel t eet h . Th e clea r a n ce bet ween t h e cr a n ksh a ft
posit ion sen sor a n d t h e t eet h of t h e flywh eel is fixed
by t h e in st a lla t ion .
Two t eet h on t h e flywh eel a r e m issin g. Th e r esu lt -
in g sign a l ga p is u sed by t h e E CM t o det ect t h e TDC
posit ion of cylin der n u m ber on e.
OPERA TION
Th e clea r a n ce bet ween t h e cr a n ksh a ft posit ion sen -
sor a n d t h e flywh eel a r e fixed by t h e in st a lla t ion
posit ion . Two t eet h on t h e flywh eel a r e m issin g. Th e
r esu lt in g ga p is u sed by t h e E CM t o det ect DTC of
cylin der n u m ber on e. Th e cr a n ksh a ft posit ion is ca l-
cu la t ed t o a n a ccu r a cy of a fr a ct ion of a degr ee so
t h a t t h e st a r t a n d en d of in ject ion ca n occu r a t
exa ct ly t h e r igh t m om en t . Th e en gin e speed sign a l is
a lso pr ocessed by t h e E CM fr om t h e cr a n ksh a ft sen -
sor. Th is sign a l is t h en t r a n sfer r ed t o ot h er con t r ol
m odu les over t h e CAN bu s.
If t h e cr a n ksh a ft posit ion sen sor fa ils, t h e E CM
will st op t r igger in g t h e in ject or s, t h e en gin e will
st a ll, t h e en gin e wa r n in g ligh t m a y or m a y n ot illu -
m in a t e, bu t t h e en gin e will n ot r est a r t .
REMOVAL
(1) Discon n ect t h e n ega t ive ba t t er y ca ble.
(2) Un plu g t h e cr a n ksh a ft wir in g h a r n ess con n ec-
t or.
(3) Rem ove t h e cr a n ksh a ft sen sor r et a in in g bolt
a n d r em ove sen sor (F ig. 9).
Fig. 9 CRANKSHAFT POSITION SENSOR
1 - ENGINE BLOCK
2 - WIRING HARNESS CONNECTOR

3 - CRANKSHAFT POSITION SENSOR

4 - STARTER SOLENOID
INSTALLA TION
(1) P osit ion t h e cr a n ksh a ft posit ion sen sor in t o t h e
a ccess h ole a n d in st a ll r et a in in g bolt .
(2) Tigh t en t h e r et a in in g bolt t o 80 lbs. in . (9 N·m )
(F ig. 9).
(3) Con n ect cr a n ksh a ft posit ion sen sor wir in g h a r-
n ess con n ect or (F ig. 9).
(4) Con n ect n ega t ive ba t t er y ca ble.
FU EL I N J ECT OR
DESCRI PT I ON

FUEL INJECTOR

Th er e a r e in dividu a l fu el in ject or s for a ll five cyl-
in der s. E a ch in ject or n ozzle h a s seven h oles. Th e fu el
in ject or s a r e u sed t o spr a y fu el in t o t h e com bu st ion
ch a m ber. E a ch in ject or h a s a six digit a lph a n u m er ic
code on t h e in ject or t op wh ich m u st be en t er ed in t o
t o E CM u sin g t h e DRBIII (F ig. 10). Specific m ovin g
pa r t s in side t h e in ject or a r e gr a ph it e coa t ed t o a ssist
wit h t h e lu br ica t ion pr ocess.
FUEL INJECTION 14 - 35