Mitsubishi 3000GT Workshop Manual Supplement page 30

35-14
SERVICE BRAKES -
ABS Troubleshooting
INSPECTION CHART FOR TROUBLE SYMPTOMS
Get an understanding of the trouble symptoms and check according to the inspection procedure chart.
Caution
1.
lf steering
movements are made when driving at high speed, or when driving on
road surfaces
with
low
frictional resistance, or when passing over bumps, the ABS may operate even though
sudden braking
is not
being applied. Because
of this,
when getting information from the
customer, check if the problem occurred while driving under such conditions as these.
2.
During ABS operation, the brake pedal may vibrate or may not be able to
be depressed. Such
phenomena are due
to
intermittent changes
in hydraulic pressure inside the brake line to
prevent the wheels from locking and is not an abnormality.
Trouble
symptom Inspection
procedure
No.
Reference
page
Communication
with MUT-II
is not possible.
Communication with all systems is not possible.
1
35-15
Communication with ABS only is not possible.
2 35-16
When
the
ignition key is
turned to "ON" (engine stopped), the ABS warning lamp does
not illuminate.
3
35-17
After
the
engine starts,
the
lamp remains illuminated. 4
35-17
Faulty ABS operation Unequal braking power on both sides
5 35-18
Insufficient braking power
ABS operates under
normalbraking
conditions
ABS operates before vehicle stops under normal brak-
ing conditions
Large brake
pedalvibration
(Caution 2.)