Diagnostic Trouble Codes (Dtcsl: 30, 34 - Honda Prelude 1993 Service Manual

Diagnostic Trouble Codes (DTCsl: 30, 34
vehicle speed sensor (VSS)
NOTE: DTC 34 may have been memorized on 4WS control unit after the using ALB checker.
It so, disconnect No. 43 CLOCK, RADIO (10 A) fuse in under-hood tuse/relav box to reset the 4WS control unit.
4WS CONTROL UI{IT 12P SENSOR SIOE CONNECTOR
View from terminal side
-Tho 4WS indicator light has
boon roDorted on.
-With aervice check connector
iumpod codos 30 and 34 are
indicated.
Disconnectlhe No. 43 fuse {'l0 A)
in the undeFhood fuse/relay box.
T e s l d r i v e t h e c a r .
Sy3tom is OK at trrb tims. Inlpoct
tho vohicle spoed sonso. tominal
connecrots.
Do codes 30 and 34 appear?
D o e s t h e s p e e d o m e t e r
o p e r a t e p r o p e r l y ?
Disconnect the 4WS control unit
12P connector,
Turn the ignition switch ON.
Measure voltage between the No.
l9 terminal (ORN) of sensor side
connector ot 4WS control unit
and body ground.
Rool6c6 the 4WS control unit
lwhon tho symplom rocurrod.)
ls there more than 5 V?
Repaii opon or short in the ORN
wh€ to body ground betwoen the
vehiclo speed sensor and rhe 4WS
contol unil.
(Go to pago 23-1181
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