Engine Controls - System & Component Testing: Diagnosis Mitsubishi Mirage V

Intake Charge Air Pressure Control System Test (Eclipse)

1. Turn ignition on. Using scan tool, check for and record any DTCs. Turn ignition off. Disconnect and plug Black hose from wastegate solenoid. Connect a vacuum pump to wastegate solenoid where Black hose was connected.
2. Turn ignition on. Apply vacuum to wastegate solenoid. If wastegate solenoid holds vacuum, go to next step. If wastegate does not hold vacuum, replace wastegate solenoid.
3. Start engine and allow to idle at normal operating temperature. Apply vacuum to wastegate solenoid valve. If wastegate solenoid allows vacuum to bleed off, wastegate solenoid is okay. If wastegate solenoid does not allow vacuum to bleed off, check wastegate solenoid valve. See «WASTEGATE CONTROL SOLENOID VALVE TEST»(ref-91126-S13300000172001030200000) . If wastegate solenoid valve is okay, repair valve control circuits.

Intake Charge Air Pressure Control System Test (3000GT)

1. Turn ignition on. Using scan tool, check for and record any DTCs. Turn ignition off. Disconnect Black hose from wastegate solenoid and connect a vacuum "T" and hose between solenoid and Black hose. Connect a vacuum pump to vacuum "T". Disconnect end of Black hose (painted Red) from turbocharger wastegate actuator control boost nipple, and plug nipple.
2. Turn ignition on. Apply vacuum to Black hose at vacuum "T". Open and close end of Black hose (painted Red). With hose open, vacuum should bleed down. With hose closed, vacuum should hold. Start engine and allow to idle at normal operating temperature. With vacuum applied and hose closed, vacuum should bleed down. If operation is not as specified, check turbocharger wastegate actuator, wastegate solenoid or hose.

Wastegate Control Solenoid Valve Test

1. Disconnect wastegate control solenoid electrical connector and vacuum hoses. Check solenoid resistance. If resistance is 36-44 ohms at 68°F (20°C), go to next step. If resistance is not as specified, replace wastegate control solenoid valve.
2. Connect a vacuum pump to wastegate solenoid where White hose was connected, and apply vacuum. Using a fused jumper wire, energize wastegate control solenoid valve. When nipple where Black hose was connected is opened, vacuum should bleed down. When nipple where Black hose was connected is plugged, vacuum should hold. Disconnect jumper wire at negative battery terminal and de-energize wastegate control solenoid valve.
3. Apply vacuum to nipple where White hose was connected. When nipple where Black hose was connected is opened, vacuum should hold. If wastegate control solenoid valve operates as described, check valve control circuits. If wastegate control solenoid valve does not operate as described, replace valve.