Mitsubishi 3000GT Service Manual page 884

SERVICE BRAKES
INSPECTION CHART FOR TROUBLE SYMPTOMS
Caution
1. Under certain driving conditions such as going on a low p road surface, high speed turning
and passing over projection, ABS may operate even if no sudden brake is applied. When making
diagnosis by questioning the user, therefore, be sure to check if the trouble occurred under
such driving conditions.
2. When ABS is in operation, changes are caused in a feeling of the brake pedal (pedal vibration
and inapplicable brake pedal). This is due to intermittent changes of fluid pressure inside
the brake line in order to prevent the wheels from locking. There is nothing abnormal.
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
No communication is possible between scan tool and any / ,+.cbable cauSe
of control systems.
The power circuit and ground circuit of data link connector are probably defective.
Measure at data link connector C-79.
Voltage between terminal 16 and ground
l
OK: Battery voltage
Continuity between terminal 5 and ground
l
Replace scan tool.
Data link connector defective
l
Harness defective
l
OK
Check trouble symptoms.
NG
Check harness between power supply and data
link connector, and repair if necessary.
OK
Check trouble symptoms.
Check and correct harness between data link
connector and ground, and repair if necessary.
.
N G
NG