Mitsubishi 4G1 Service Manual page 324

Red
VACUUM VALVE - DOHC TURBO
Up to
1992 models
(2) Connect a hand vacuum pump to the black nipple of the
vacuum valve.
(3) With the other nipple closed by the finger, apply a negative
pressure of 500 mmHg (19.7 in.Hg.) to make sure that the
negative pressure is maintained.
(4) Let go your finger and make sure that the negative pressure
leaks out gradually.
(5) Disconnect the hand vacuum pump and connect it to the
green nipple.
(6) Make sure that the negative pressure leaks out as soon as it
is applied.
(7) Remove the hand vacuum pump from the valve.
(8) Install the filter onto the black nipple of the valve.
IDLE AIR CONTROL MOTOR
Checking the Coil Resistance
(1) Connect Test Harness to the motor connector.
(2) Measure the resistance between the white clip of Test
Harness and the red clip or blue clip.
Standard value: 28 - 33 LR
Harness and the yellow clip or black clip.
Operational Check
connector.
(2) Connect the positive 0 terminal of 6 volt battery to the
white clip and the green clip of Test Harness.
at