Actuator Test - Acura 3.5 RL Manual

Actuator Test

1. Disconnect the actuator cable from the actuator rod,
and disconnect the 4P connector.
2. Connect battery power to the No. 4 terminal and
ground to the No. 1, No. 2, and No. 3 terminals.
3. Connect a vacuum pump to the check valve. Then
apply vacuum to the actuator.
4. The actuator rod should pull in completely. If the
rod pulls in only part-way or not at all, check for a
leaking vacuum line or defective solenoid.
VACUUM PUMP GAUGE
A973X-041-XXXXX
Terminal side of male terminals
ACTUATOR ROD
With voltage and vacuum still applied, try to pull
5.
the actuator rod out by hand. You should not be
able to pull it out. If you can, it is defective.
6. Disconnect ground from the No. 3 terminal. The
actuator rod should return. If it does not return, and
the vent hose and filter are not plugged, the
solenoid valve assembly is defective.
Repeat steps 2 through 5, and disconnect ground
7.
from the No. 1 terminal. The actuator rod should
return. If it does not return, and the vent hose and
filter are not plugged, the solenoid valve assembly
is defective.
If you replace the solenoid valve assembly, be sure
8.
to use new O-rings on each solenoid.
Disconnect power and ground from the 4P connec-
9.
tor. Disconnect the vent hose from the actuator. Con-
nect a vacuum pump to the actuator vent hose port,
and apply vacuum. The actuator rod should pull in
completely. If not, the vacuum valve is stuck open.
Replace the actuator.