Symptom:
TR AN S TE MP S E N S OR E RR ATIC
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
TR AN S TE MP S E N S OR ER RATIC
Wh en Mon it or ed: Wh en t r a nsm ission t em per a tu r e is below 170° C (338° F )
Set Con dit ion: Wh en t here is a 10° C (18° F ) va ria tion bet ween ea ch tr a nsm ission
tem per a t u re sen sor r ea d. If t h e DTC is r eset (a ft er a n ign it ion cycle), t h e DTC will be set
to St or ed (In t er mit t en t ) sta t us.
POSSIBLE CAUSES
TRANSMISSION TE MP SENSOR WIRING
TCM - TRANS TE MP SE N SOR ERRATIC
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# , m on it or t he Tra n sm ission Tem per a t u r e.
Wit h th e br a kes fir m ly a pplied, pla ce th e gea r select or in Dr ive.
Wh ile mon it orin g t h e DRBIII#, wiggle th e wir es a n d con n ector s fr om t h e TCM to th e
Tra n sm ission Solen oid Assembly.
Did t h e Tr a n sm ission Tem pera t u r e flu ct ua t e wh ile wigglin g t h e wir es?
All
Ye s → Repa ir t h e wir in g a n d/or con n ect or s a s necessar y.
Per for m N AG1 TRAN SMISSION VE RIF ICATION TE ST - VER 1.
No → Go To 3
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TRANSMISSION - NAG1