No Response From Automatic Temperature Control Module - Chrysler Sebring 2005 Service Manual

COM M U N I CAT I ON
*N O RES P ON S E F ROM AU TOMATIC TEMP ERATU RE CON TROL MOD -
U LE —
Co n tin u e d
TES T
4 N o te : En s u re th e re is P CI B u s c o m m u n ic a tio n w ith o th e r m o d u le s o n th e
v e h ic le be fo re p ro c e e d in g . If n o t, re fe r to th e s y m p to m lis t fro m th e m e n u
a n d re p a ir a s n e c e s s a ry.
Discon n ect t h e Au t om a t ic Tem per a t u r e Con t r ol H ea d h a r n ess con n ect or.
Use Scope in pu t ca ble CH 7058, Ca ble t o P r obe a da pt er CH 7062, a n d t h e r ed a n d
bla ck t est pr obes.
Con n ect t h e scope in pu t ca ble t o t h e ch a n n el on e con n ect or on t h e DRB. At t a ch t h e
r ed a n d bla ck lea ds a n d t h e ca ble t o pr obe a da pt er t o t h e scope in pu t ca ble.
Wit h t h e DRBIII select P ep Modu le Tools.
Select la b scope.
Select Live Da t a .
Select 12 volt squ a r e wa ve.
P r ess F 2 for Scope.
P r ess F 2 a n d u se t h e down a r r ow t o set volt a ge r a n ge t o 20 volt s. P r ess F 2 a ga in
wh en com plet e.
Con n ect t h e Bla ck lea d t o t h e ch a ssis gr ou n d. Con n ect t h e Red lea d t o t h e P CI Bu s
cir cu it in t h e ATC H ea d con n ect or.
Tu r n t h e ign it ion on .
Obser ve t h e volt a ge displa y on t h e DRB La b Scope.
Does t h e volt a ge pu lse fr om 0 t o a ppr oxim a t ely 7.5 volt s?
Yes
No
5 Tu r n t h e ign it ion off.
Discon n ect t h e ATC H ea d h a r n ess con n ect or.
Discon n ect t h e BCM C2 h a r n ess con n ect or.
Mea su r e t h e r esist a n ce of t h e P CI bu s cir cu it bet ween t h e ATC H ea d con n ect or a n d
t h e BCM C2 con n ect or.
Is t h e r esist a n ce below 5.0 oh m s?
Yes
No
ACTION
→ Repla ce t h e Au t om a t ic Tem per a t u r e Con t r ol H ea d in a ccor da n ce
wit h t h e ser vice in for m a t ion .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Go To 5
→ Repla ce t h e Body Con t r ol Modu le in a ccor da n ce wit h t h e ser vice
in for m a t ion .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
→ Repa ir t h e P CI Bu s cir cu it for a n open .
P er for m BODY VE RIF ICATION TE ST - VE R 1.
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AP P LICAB ILITY
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