• Discon n ect t h e live test lea d befor e discon n ect in g
th e comm on t est lea d.
• Wh en usin g th e met er fu nct ion, keep t h e
DRBII I# a way fr om spa r k plug or coil wir es to
avoid m ea su r in g er ror fr om ou tside in t er fer en ce.
4.3 WARNINGS
4.3.1 VEHICLE DAMAGE WARNINGS
Befor e discon n ectin g a ny con t rol m odu le, m a k e
su re th e ign it ion is "lock" posit ion . F a ilu re to do so
could da m age th e module.
Wh en test in g volt age or con t in u it y at an y con tr ol
modu le, u se th e t er min al side (not t h e wir e en d) of
th e con n ect or. Do n ot pr obe a wir e t h r ough th e
in su la t ion : t h is will da m age t h e wir e a nd even tu -
ally ca u se th e wir e to fa il beca use of corr osion .
Be ca r eful wh en per for m in g elect r ica l t est s so as
to pr even t a ccident a l sh or t in g of t er min als. Su ch
mist a kes ca n da m age fu ses or com pon en ts. Also, a
second DTC cou ld be set , m a k in g diagn osis of th e
origin a l problem m or e difficu lt .
Wh en repla cin g a blown fuse, it is im por ta n t to
use on ly a fuse ha vin g t h e corr ect am per a ge r a tin g.
Th e u se of a fuse wit h a ra t in g ot her th a n in dica t ed
ma y r esu lt in a da n ger ou s elect rica l syst em over-
loa d. If a pr oper ly ra t ed fu se con tin ues t o blow, it
in dica t es a pr oblem in t h e cir cu it t ha t m u st be
corr ect ed.
4.3.2 ROAD TESTING A COMPLAINT
VEHICLE
Som e compla in ts will requ ir e a test dr ive a s pa rt
of t h e repair ver ifica tion pr ocedur e. Th e pu r pose of
th e t est dr ive is t o tr y t o du plica t e th e dia gn ost ic
DTC or sym pt om con dit ion .
CAUTION: Before road testing a vehicle, be
sure that all components are reassembled.
During the test drive, do not try to read
DRBIII! screen while in motion. Do not hang
the DRBIII! from the rear view mirror or
operate it yourself. Have an assistant
available to operate the DRBIII!.
Roa d t estin g is a n essen tia l st ep in t he dia gn ost ic
pr ocess th a t mu st n ot be over looked. Alon g wit h the
dia gn ost ic in form a t ion obt a in ed fr om t h e DRBIII#
Sca n Tool a n d t he or igin a l cu st omer con cern , t h e
roa d test h elps ver ify the pr oblem wa s cur ren t a n d
an y r epa ir s per for med, fixed t h e veh icle cor r ect ly.
Alwa ys oper a t e a nd obser ve t h e veh icle u n der ac-
tu a l dr ivin g con dition s.
J ust a s im por ta n t a s t h e r oad t est is, t her e a r e
pr elim in a ry inspect ions tha t sh ou ld be per form ed
pr ior t o t h e r oa d t est . Alwa ys check t he flu id level
an d condit ion befor e t a kin g t he veh icle on a roa d
test . Det erm in e if t h e in cor rect flu id is being u sed,
im pr oper flu id will resu lt in er r a tic t ra n sm ission
opera t ion .
Som e of the condit ion s of in cor r ect flu id level ar e a s
follows:
• Dela yed en ga gem en t
• Poor sh ift in g or er r a tic sh ift in g
• Excessive noise
• Overh ea t in g
Th e next st ep is t o ver ify t h a t th e sh ift lin k a ge is
corr ect ly adju st ed. If th e sh ift lin ka ge is in corr ect ly
adju st ed, a nu m ber of com pla int s ca n r esu lt .
Th e TCM m onit or s t he Sh ift Lever Posit ion (SLP )
cont in u ou sly. If t h e lin ka ge is incor r ectly a dju st ed,
th e TCM will sen se a sh ift lever posit ion t ha t is not
corr ect for t he gea r ch osen by t he dr iver. Th is m a y
cau se a DTC to be set .
Th e followin g compla in ts m ay a lso be t h e resu lt of
an in corr ect ly a dju st ed or wor n lin k a ge:
• Dela yed clu tch en ga gem en t
• Er r a tic sh ift s
• Veh icle will dr ive in n eu tra l
• En gin e will n ot cr a n k in pa r k or n eu tr a l
• Gea r sh ift lin ka ge will be a ble t o be sh ift ed
wit h out t h e k ey in t h e ign it ion
• Not a ble to r em ove th e ign it ion key in pa rk
• Pa r k in g pa wl will n ot en ga ge pr operly
Th e sh ift lin ka ge sh ou ld a lso be a dju st ed wh en
repla cin g t h e Tra n sm ission , r epa ir in g t h e va lve
body, or wh en r epa ir in g an y com pon en t bet ween t he
sh ift lever a nd t h e Tra n sm ission .
Som e qu est ion s t o a sk you r self wh en per for min g
th e roa d t est ar e as follows:
• Is t he com pla int or con cer n wh at you t hin k t he
pr oblem i s, ba sed on th e dr iver s descript ion of t he
pr oblem ?
• Is t h e Tr a nsm ission opera t in g nor ma lly, or is
th er e a rea l pr oblem ?
• Wh en does t he pr oblem occu r ?
• Is t h e pr oblem on ly in on e gea r ra n ge?
• Wh a t t em pera t ur e does t h e pr oblem occu r?
• Does t h e veh icle h a ve t o sit over n igh t for t he
pr oblem t o occu r ?
• Does th e tr a n sm ission go in to Limp-in m ode?
4.4.4 BULLETINS AND RECALLS
Alwa ys per form a ll Sa fet y Reca lls a n d Tech n ica l
Service Bu lletin s tha t a re a pplica ble to t h e pr ob-
lem.
7
GEN ERAL I N FORM AT I ON
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