displa y does n ot m a t ch t h e st at e of t h e peda l,
perfor m t h e pr oper t est . F or a pr oblem wit h t h e
“ABS” wa r n in g indica tor, r efer t o th e pr oper test .
6. If no oth er pr oblem s ar e foun d, it will be neces-
sa ry t o roa d test t h e v eh icle. TH E D R B III"
MUST NO T BE CO NNEC TED T O T H E
DATA LIN K CONN ECTOR WHE N ROAD
TE S TIN G F OR PR OPE R AN TILOCK OP-
ERATION . THE SYS TEM IS D IS AB LED
WHILE IN D IAGN OS TIC MOD E. P er form
sever a l a nt ilock st ops from above 50 Km /h (30
mph) and then repeat steps 2, 3, and 4. If any
dia gn ost ic trou ble codes ar e pr esen t , pr oceed to
th e appropr iat e test .
7. The followin g condit ion s sh ou ld be con sider ed
‘‘N ORMAL ’’ oper a t ion , a nd n o repa irs sh ou ld be
at t em pt ed to cor rect t h em.
– Br a ke peda l feedba ck du r in g a n ABS st op
(click in g, vibr a t in g)
– Click in g, groa n in g or bu zzin g a t 12 Km/h (8
mph ) (dr ive off self t est )
– Groa n in g n oise du r in g a n ABS st op
– Sligh t br a ke peda l dr op a n d pop noise wh en
ign it ion is in it ia lly t u rn ed on
– Br a ke peda l r a t chet in g down at t h e en d of a n
ABS st op
8. If t he com plain t is ABS ‘‘cyclin g’’ a t t he en d of a
st op a t low speeds, it ma y be cau sed by a
ma r gin a l wh eel speed sen sor sign a l. The sen sor
air ga p, t on e wh eel condit ion , a n d/or br a kes
ha n gin g u p ar e possible ca u ses of t his con dition .
9. After a roa d t est in wh ich no pr oblem s wer e
foun d, r efer t o a ny Tech n ica l Ser vice Bu lletin s
that may apply.
5.0 REQUIRED TOOLS AND
EQU I PM EN T
DRBII I" (dia gn ost ic r ea d-ou t box)
jumper wi res
ohm m et er
volt met er
test light
oscilloscope
6.0 GLOSSARY OF TERMS
ABS an t ilock br a k e syst em
AC alt er n at in g cu rr en t
BCM body con t r ol m odu le
BS br a k e swit ch
BLS br a ke la m p swit ch
CAB cont r oller a nt ilock br a k e
DC dir ect cu rr en t
DLC da ta lin k con n ector
DRBIII" dia gn ost ic r ea d-ou t box
DTC dia gn ost ic t est code
EBD elect ron ic br a ke dist ribu tion
ECM elect ron ic cont rol m odu le
HCU hydr a u lic con t rol u n it
HZ Hertz
IC in st r um en t clu st er
LF left fr ont
LR left r ear
PM pu mp m ot or
RF righ t fr ont
RR right rear
SOL solen oid
TCS tr a ction con t rol syst em
TCS S tr a ction con tr ol syst em swit ch
VSS veh icle speed sign a l
WS S wh eel speed sen sor
7
GEN ERAL I N FORM AT I ON
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