Honda Acura NSX 1991 Service Manual page 736

, (From pa,ge 19-48)
Does the pump motor run with
an increasingly loud, raspy
s o u n d ?
YES
Does the pump motor stop after
about 60 seconds?
I
Does the reservoir fluid level go
bles in the modulator reservoir
\ t a n k ?
' E S
System is OK; recheck pump
motor, to confirm no intermittent
problem.
NOTE: The fluid enters the reservoir under pressure; wait 1 or 2 minutes for air bubbles to disappear and level to
stabilize.
Pump runs with a constant soft
s o u n d :
Bleed air from anti-lock brake
system using the procedure cn
page 19-62 and check the pump
sound again.
Pump stops after about 120
seconds:
faulty pressure switch (open).
If level stays the same and
l
t h e r e a r e b u b b l e s i n t h e
modulator reservoir tank,
check the accumulator fluid
quantity by bleeding the high
pressure line with the Bleeder
T-wrench:
faulty accumulator.
-If under 100 cc (lower limit),
modulator inlet solenoid leak
or accumulator leak.
If level goes up: faulty modu-
l
lator assembly.
(UPPER LIMIT)
(LOWER LIMIT)