Mitsubishi 3000GT Service Manual page 497

ENGINE AND EMISSION CONTROL
2 3 4
TSB Revision
THROTTLE POSITION SENSOR INSPECTION
For inspection, refer to GROUP 13A - On-Vehicle Inspection
of MFI Components.
CLOSED THROlTLE POSITION SWITCH INSPECTION
For inspection, refer to GROUP 13A - On-Vehicle Inspection
of MFI Components.
VACUUM PUMP INSPECTION
Inspection of Solenoid Valves (Control and Relief
Valves)
(1) Disconnect the connector of the vacuum pump assembly.
(2) Measure the resistance values across terminals (1) and
(2) and across terminals (1) and (3).
Standard value: 50-60 Q
(3) Check that when the battery voltage is applied across
terminals (1) and (2) and across terminals (1) and (3)
the operating sounds of the solenoid valves are heard.
(4) If the solenoid valves are defective, replace the vacuum
pump assembly.
Inspection of Motor
(1) Disconnect the connector of the vacuum pump assembly.
(2) Check that when the battery voltage is applied across
terminals (1) and (4), the motor operates.
ACTUATOR INSPECTION
(1) Remove the actuator.
(2) Using a vacuum pump, apply a negative pressure to the
actuator to check that the holder portion moves more
than 35 mm (1.4 in.). Retain the negative pressure in
that state to check that the holder portion does not change
its position.
(3) After the actuator has been mounted, check and adjust
the cruise control cable. (Refer to P.17-31.)
CRUISE CONTROL RELAY INSPECTION
(1) Remove the cruise control relay.
(2) Apply battery power to terminal (2) and connect terminal
(4) to the ground. Check for continuity across the terminals.
When power
Across terminals
is supplied
When no power Across terminals 1-3
is supplied
Across terminals
17-37
Continuity
l-3
No continuity
Continuity
2-4