Symptom:
SENS OR S U P P LY VOLTAGE
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
SEN S OR S UP P LY VOLTAGE
Wh en Mon it ored: Alwa ys m on it ored wit h system a ct ive a t ea ch ign it ion cycle an d n o
un der-volta ge con dit ion exist s.
Set Con dit ion : If mea su r ed sen sor volt a ge is not wit h in specified l im it s 4.8-7.2 volt s or if
a F a ult y r egu la tor, Sen sor Su pply Volt a ge sh or t ed t o gr oun d, Sen sor Su pply Volt a ge
sh or t ed t o ba t t er y is det ect ed.
POSSIBLE CAUSES
IN TE RMITTE NT WIRING AND CONNECTORS
SENSOR SUP PLY CIRCUIT SHORT TO OTHE R CIRCUIT
SE NSOR SUP P LY VOLTAGE CIRCUIT SH ORT TO GROUND
TCM - SE NSOR SUP P LY VOLTAGE
TE S T ACTION AP PLICAB ILITY
1 NOTE: Low fluid level can be the cause of many transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
flui d lev el p er t h e s e r vi c e i n fo r m a ti o n .
NOTE: Always perform diagnostics with a fully charged battery to avoid
fa ls e s y m p t o m s .
Wit h t h e DRBIII#, r ea d t h e en gin e DTCs. Ch eck a n d r epa ir all en gin e DTCs pr ior to
per for m in g t r a n sm ission sympt om dia gnost ics.
Wit h th e DRBIII#, r ea d a n d recor d a ll Tra n sm ission DTCs.
NOTE: Ch e c k c o n n e c to rs - Cle a n /re pa i r a s n e c e s s a ry. P o o r p in to te rm in a l
connections can set DTCs.
Usin g t h e wir in g dia gr a m /schem a t ic a s a gu ide, in spect t he wir in g a n d con n ect or s.
Repa ir a s n ecessa r y.
Most DTCs set on st a r t up bu t som e m u st be set by dr iving th e veh icle su ch t h a t a ll
dia gnost ic m on itor s h a ve r u n .
Note: Verify flash level of transmission controller. Some problems are
corrected by software upgrades to the transmission controller.
NOTE: Ch e c k fo r a n y Te ch n ic a l S e rv ic e B u lle t in s th at m a y ap p ly.
Per for m t h is pr ocedu r e pr ior to Sym pt om dia gn osis.
All
Con t in u e
Go To 2
2 Ign ition on, en gine n ot ru n n in g.
Wit h th e DRBIII#, r ea d Tra n sm ission DTCs.
Is t h e DTC Sen sor Su pply Volt a ge displa yed a s ACTIVE ?
All
Ye s → Go To 3
No → Go To 5
95
TRANSMISSION - NAG1
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