Acura 1994 Integra Service Manual page 312

Intake
Intake
Air
Air
System
Bypass (lAB) Control System tBl8C1 enginel (cont'dl
Troublcahooting
VACUUII PUMP/GAUG€
A973X-041-XXXXX
from
wiro haana
sid€
PI{K/
B L U I - I
YEI/
a L K l + l
tA8 COI{TROL
DIAPHRAGM
Insp€ction of IAB Conltol Sytt.m
Start engino and allow to idle.
R€move # 13 vacuum hose trom
the IAB control diaph.agm and
connect vacuum gauge to the
hose.
R€move # 12 vacuum hose from
th€ IAB vacuum tank, then check
tor vaccum at the IAB vacuum
tank.
Rcplir lh. block.g. ot
vacuufi laak boiwaao
tha IAB vacuum tank
lnd th. intlk
m!ni-
fold.
Disconnect the 2P conn€ctor lrom
the IAB control solenoid valve.
M e a s u r e v o l t a g e b e t w e e n
Y E L / B L K ( + l
t o r m i n a l a n d
PNK/8LU l-) terminsl.
ls thoro battery voltage?
M e a s u r e v o l t a g e b € t w e e n
BLK^|/EL (+) torminal and body
ground.
IAB CONTBOL
SOLENOID VALVE