Mirage L4-1597cc 1.6L DOHC Turbo (1989)
Canister Purge Solenoid: Testing and Inspection
System Schematic
To test the Purge Control Solenoid Valve, located on the engine compartment firewall, proceed as follows.
System Test
1.
Mark and disconnect the vacuum hose (black with red stripe) from the solenoid valve and attach a hand vacuum pump.
2. Plug the vacuum nipple on the throttle body that the hose was removed from.
3. With the engine cold (below 60°C 140°F) and idling, apply 50 kPa (14.8 in.Hg) vacuum and verify that valve maintains vacuum.
4. Run engine at 3,000 RPM and repeat procedure, valve should still maintain vacuum.
5. Run engine until it reaches operating temperature (above 70°C 158°F) and let it idle.
6. Apply 50 kPa (14.8 in.Hg) vacuum and verify that valve maintains vacuum.
7. Stop engine and restart. Run engine at 3,000 RPM, within 3 minutes of starting engine repeat procedure, valve should leak vacuum.
8. Run engine at 3,000 RPM. 3 minutes after starting engine repeat procedure, valve should maintain vacuum momentarily and then leak.
Note: The vacuum will leak continuously if the altitude is 2,200m (7,200ft) or higher, or the intake air temperature is 50°C (122°F) or lower.
Solenoid Test
1.
Mark and disconnect the vacuum hose (black with red stripe) from the solenoid valve.
2.
Disconnect the electrical harness connector.
3.
Connect a manual vacuum pump to the nipple the red striped hose was removed from.
4.
Attempt to apply a vacuum while voltage is applied to the solenoid valve, verify that the valve does not hold vacuum.
5.
Remove power from the solenoid valve and verify that the solenoid valve holds vacuum.
6.
Measure the resistance between the two terminals of the solenoid valve, and verify that the resistance is between 36 and 44 ohms at 20 degrees C
(68 degrees F).
HARNESS TEST
1. Disconnect the solenoid connector and turn on the ignition.
2. Using a voltmeter, measure the power supply voltage between the harness connector terminal 2 and ground.
Voltage: System Voltage
