Honda Acura NSX 1991, Service Manual

Page: 751 / 1420

Modulator/Solenoid Unit
Solenoid Leak Test
1 . Disconnect the 6-P inspection connector
from the connector cover located under the glove
box and connect the inspection connector to the
ALB checker.
ANTI-LOCK BRAKE SYSTEM
INDICATOR LIGHT
CONNECTOR
ALB CHECKER
(US)
o r
6-P INSPECTION
CONNECTOR
(Canada)
CAUTION: Place the vehicle on level ground with
the wheels blocked. Put the transmission in neutral
for
manual transmission models,
and in P for
automatic transmission models. ,
2. Remove the modulator reservoir filter, then fill the
modulator reservoir to the MAX level.
NOTE: Do not reuse aerated brake fluid that has
been bled from the power unit.
3. Bleed high pressure fluid from the maintenance
bleeder with the special tool.
00
SOLENOID HE
UNIT
MAINTENANCE
BLEEDER
6 x
5.5 (0.55
kg-m,
4.0
4. Start the engine and release the parking brake.
5. Turn the Mode Selector to 1 and press the Start
Test button.
6. While the ALB pump is running, place your finger
over the top of the solenoid return tube in the
modulator reservoir.
SOLENOID RETURN
TUBE
Feel for brake
fluid here.
SOLENOID
RETURN
TUBE
SUPPLY
l
If you can feel back fluid coming from the return
tube, one of the solenoids is leaking. Go to
Solenoid Flushing.
If you can feel brake fluid coming from the return
tube, one of the solenoids is leaking. Go to step
7.
l
If you can’t feel brake fluid coming from the
return tube, the solenoids are OK.
Reinstall the modulator reservoir filter and refill
the reservoir to the MAX level.
7. Bleed high-pressure fluid from the maintenance
bleeder with the special tool, then run through
modes 3 and 6 with the ALB checker. Repeat this
three or four times.
8. Repeat steps 5 and 6.
If the solenoid leakage has stopped, reinstall the
modulator reservoir filter and refill the reservoir
to the MAX level.
If one of the solenoids is still leaking, replace the
modulator/solenoid unit.