Egr Port Vacuum Check; Egr Control Solenoid Valve Check - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

ENGINE AND EMISSION CONTROL -
EGR vacuum
nipple
Vacuum
Engine speed (r/min)
A
B
C
Battery
Emission Control System <MPI>

EGR PORT VACUUM CHECK

1. Disconnect the vacuum hose (white stripe) from the throttle
body EGR vacuum nipple and connect a hand vacuum
pump to the nipple.
2. Start the engine and check that the vacuum remains
fairly constant after racing the engine.
NOTE
If vacuum changes, it is possible that the throttle body
EGR port may be clogged and require cleaning.

EGR CONTROL SOLENOID VALVE CHECK

NOTE
When disconnecting the vacuum hose, always make a mark
so that it can be reconnected at original position.
1. Disconnect the vacuum hose (yellow stripe, white stripe,
green stripe) from the solenoid valve.
2. Disconnect the harness connector.
3. Connect a hand vacuum pump to the nipple to which
the white-striped vacuum hose was connected.
4. Check airtightness by applying a vacuum with voltage
applied directly from the battery to the EGR control
solenoid valve and without applying voltage.
Battery voltage B nipple condition
Not applied Open
Open
Applied
Closed
5. Measure the resistance between the terminals of the
solenoid valve.
Standard value: 36 - 44 W (at 20_C)
17-11
Normal condition
Vacuum maintained
Vacuum leaks
Vacuum maintained