Chrysler Sebring 2005 Service Manual page 2308

DRI V EABI LI T Y - N GC
P 0171-F U EL S YS TEM 1/1 LEAN —
TES T
1 N OTE: Ch e c k fo r c o n ta m in a n ts th a t m a y h a v e d a m a g e d th e O2 S e n s o r:
c o n ta m in a te d fu e l, u n a p p ro v e d s ilic o n e , o il a n d c o o la n t.
N OTE: D ia g n o s e a n y Mis fire D TC(s ) firs t, if s e t a lo n g w ith th e fu e l s y s te m
D TC.
Ign it ion on , en gin e n ot r u n n in g.
Wit h t h e DRBIII , r ea d DTCs a n d r ecor d t h e r ela t ed F r eeze F r a m e da t a .
Is t h e Good Tr ip Cou n t er displa yed a n d equ a l t o zer o?
Yes
No
2 Wa rn in g : Th e fu e l s y s te m is u n d e r a c o n s ta n t p re s s u re (e v e n w ith th e e n g in e
o ff). B e fo re te s tin g o r s e rv ic in g a n y fu e l s y s te m h o s e , fittin g o r lin e , th e fu e l
s y s te m p re s s u re m u s t be re le a s e d .
In st a ll a fu el pr essu r e ga u ge.
Ign it ion on , en gin e n ot r u n n in g.
Wit h t h e DRBIII , a ct u a t e t h e ASD F u el Syst em t est a n d obser ve t h e fu el pr essu r e
ga u ge.
N OTE: F u e l p re s s u re s p e c ific a tio n is 400 KP a +/- 34 KP a (58 p s i +/- 5 p s i).
Tu r n t h e ign it ion off.
Ch oose a con clu sion t h a t best m a t ch es you r fu el pr essu r e r ea din g.
Wit h in Specifica t ion
Below Specifica t ion
Ca u tio n : S to p All Ac tu a tio n s .
3 N OTE: If o n e o f th e O2 S e n s o rs S ig n a l o r Re tu rn c irc u its a re s h o rte d to
g ro u n d o r v o lta g e , a ll th e o th e r O2 S e n s o r v o lta g e re a d in g s w ill be a ffe c te d .
N OTE: Afte r th e re p a irs h a v e be e n m a d e , v e rify p ro p e r O2 S e n s o r o p e ra tio n .
If a ll th e O2 S e n s o r v o lta g e re a d in g s h a v e n o t re tu rn e d to n o rm a l, fo llo w th e
d ia g n o s tic p ro c e d u re fo r th e re m a in in g O2 S e n s o rs .
St a r t t h e en gin e.
Allow t h e en gin e t o r ea ch n or m a l oper a t in g t em per a t u r e.
Wit h t h e DRBIII , r ea d t h e O2 Sen sor volt a ge.
Is t h e volt a ge swit ch in g bet ween 2.5 a n d 3.4 volt s?
Yes
No
4 Tu r n t h e ign it ion off.
N OTE: Allo w th e O2 S e n s o r to c o o l d o w n be fo re c o n tin u in g th e te s t. Th e O2
v o lta g e s h o u ld s ta bilize a t 5.0 v o lts . Ra is in g th e h o o d m a y h e lp in re d u c in g
u n d e r h o o d te m p s .
Ign it ion on , en gin e n ot r u n n in g.
Wit h t h e DRBIII , a ct u a t e t h e O2 H ea t er Test .
Wit h t h e DRBIII , m on it or O2 Sen sor volt a ge for a t lea st 2 m in u t es.
Does t h e volt a ge st a y a bove 4.5 volt s?
Yes
No
ACTION
→ Go To 2
→ Refer t o t h e INTE RMITTE NT CONDITION sym pt om in t h e
Dr ivea bilit y ca t egor y.
P er for m P OWE RTRAIN VE RIF ICATION TE ST VE R - 5.
Go To 3
Go To 12
→ Go To 4
→ Go To 9
→ Repla ce t h e O2 Sen sor.
P er for m P OWE RTRAIN VE RIF ICATION TE ST VE R - 5.
→ Go To 5
Co n tin u e d
104
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