Intake Manifold Pressure Check; Secondary Air Control System Check; Secondary Air Control Solenoid Valve Check - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

15-6
Vacuum tank
B
A
INTAKE AND EXHAUST -

INTAKE MANIFOLD PRESSURE CHECK

Refer to GROUP 11A – On-vehicle Service.

SECONDARY AIR CONTROL SYSTEM CHECK

1. Start the engine and carry out idling.
2. Confirm that the secondary air valve lifts up when the
SECONDARY AIR CONTROL SOLENOID
Secondary
VALVE CHECK
air control
solenoid
OPERATION CHECK
valve
1. Disconnect the vacuum hose (white-striped, yellow-
2. Separate the harness connector.
3. Connect the hand vacuum pump to the solenoid valve's
4. Connect the solenoid valve terminal and battery terminal
5. Disconnect the jumper wire between the battery's ( - )
Battery
On-vehicle Service
engine-ECU connector No. 53 terminal is short-circuited
with the earth using a jumper wire.
The engine-ECU connector must be connected at this
time.
striped) from the solenoid valve.
A nipple.
with a jumper wire.
terminals, apply a negative pressure, and inspect the
tightness.
Jumper wire State of B
nipple
Connected Opened
Closed
Disconnected Closed
Normal state
Negative pressure leaks.
Negative pressure is
maintained.
Negative pressure leaks.