Honda Prelude 1993 Service Manual page 503

Selt-diagnosl. I 04 | Indlcator
llght blnk! four tm.,
R.l.J to S.ctlon 23 tor v.H-
cle speed s.nlor (VSSI l.{.
Disconnect the 26P and 22
connoctorg trom th6 TCM.
C o n n e c t t h s T 6 s t H a r n e s s
"4" and "D" connectors to
th6 wire harness onv, not to
tho TCM {1+35).
Turn th6 ignhion switch ON.
Botate the f.ont wh€61 snd
check for voltag€ botweon the
Dg and A2ryA26 terminats.
Block th6 other whe6l so it
do€s not tum,
Chock for lhort or oDon ln
ORI{ wh! bglwaln th. Dg tcr-
mlnll .nd th. VSS. It wl.a lr
OK, check rh.
VSS (rc.
lecllon 23).
Does th€ vohage O-12 V
spp6ar sh€rn€teV?
Chack to. bosa TCM conrEc-
lor3. lf n€ceaaary, aubatftuto
a known-good TCM tnd
.echock.
Possiblo Caus€
' Disconnoctod v€hicl€ spood
s€nsor {VSS)congctor
. Short or op€n in VSS wir6
' Fauhy VSS
. Mak. ru16 lft!,lrckr,
end lrloty stends are plac.d properly
(!oo sactlon 11,
. Sot tho parklng blaks r.cul.ly
lnd block lhc rcer whccb.
. Jeck up tho troni ol the clr .nd ruppoit whh srtcty .t!rdr.
(cont'd)
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