Honda Prelude 1993 Service Manual page 377

(From page 1 1-136)
lFrom psge 1 1-136)
Connect a vacuum pump to the
#8 vacuum hose.
Chack dr€ vecuum line for propor
connaction oa diaconnected
noaa.
lf OK. '.plac6 tho inllk. control
dl.phrlgm.
Does it hold vacuumT
l aha contol ayatam b OK,
R6pai. ahort lo ground
in WHT wira b6tw€en
ECM {A19).nd rhe 2P
connoctot.
Subltitute a known-good ECM
and rechock. lf symptom goaa
away, .oplaco tho originsl ECM.
11-137