Honda Prelude 1993 Service Manual page 375

Troubleshooting Flowchart
VACUUM PUMP/GAUGE
A973X-O41 -XXXXX AKE
CONTROL
SoLENOTO
VALVE
INTAKE
CONTROL
SOLENOID
VALVE
(cont'dl
St.n ongine rnd allow to idle.
Remove the #8 vacuum hos6
from the hose joint and connect
a vacuum gaug€ to the solenoid
Oisconnect lhe lower vacuum
hos€ ofthe solonoid valv6 from the
air chamb6r and connecl a vac-
uum gau96 to th€ hos6.
Chcck tho v.cuum
lina tor profEr con-
n6ctlon,
crack!,
blockrg! or dtr;on-
n*tod
ho!o.
Closn manltold m.t.
Disconnect th€ 2P connector
from the intake control solehoid
Measurs votiag€ botwson BLK/
YEL (+ l terminal and WHT (- )
tornanal.
R.pl.co th. Intlko
control aobndd volve.
ls there battery vollag€?
Measure voltage betwe€n BLK/
Y E L { + l t o r m i n a l a n d b o d y
ground.
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