Honda Prelude 1993 Service Manual page 1361

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Table of Contents

Actuator Test

1. Disconnect the actuator cable from the actuator

rod and disconnect the 4-P connector.

Connect batterv Dower to the D terminal and

ground to the A, B, and C terminals.

3. Connect a vacuum pump to the check valve.

Then apply vacuum to the actuator.

terminal side

The actuator rod should pull in completely.

lf the rod pulls in only part-way or not at all, check

for a leaking vacuum line or defective solenoid.

ACTUATOR ROD

VACUUM PUMP GAUGE

a973X-041-XXXXX

With voltage and vacuum still applied, try to pull

the actuator rod out by hand. You should not be

able to pull out. lf you can. it is defective

Disconnect ground from the C terminal. The ac-

tuator rod should return. lf it does not return but

the vent hose and filter are not plugged, the

solenoid valve assembly is defective.

Repeat steps 2 through 5, and disconnect ground

trom the A terminal. The actuator rod should

return. It it does not retu.n but the vent hose and

tilter ar€ not plugged, the solenoid valve assembly

is defective.

lf you replace the solenoid valve assembly, be sure

to use new O-rings on each solenoid.

Troubleshooting