Secondary Air Valve Check; Vacuum Tank Check - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

INTAKE AND EXHAUST -
A
B
A
B
On-vehicle Service
COIL RESISTANCE CHECK
Measure the resistance between the solenoid valve terminals.
Standard value: 29 – 35 Ω (at 20_C)

SECONDARY AIR VALVE CHECK

1. Disconnect the secondary air valve.
2. Connect the hand vacuum pump to the secondary air
valve's nipple.
3. Apply a negative pressure of 67 kPa, and confirm that
the negative pressure is maintained.
4. Blow in air from the (A) side and (B) side of the secondary
air valve, and inspect the ventilation.
Negative pressure
0 kPa
(State without
negative pressure)
40 kPa or more

VACUUM TANK CHECK

1. Connect the hand vacuum pump to the vacuum tank's
A nipple. Apply a negative pressure of 67 kPa, and confirm
that the negative pressure is maintained.
2. Connect the hand vacuum pump to the vacuum tank's
B nipple.
3. Plug the A nipple with a finger, and apply a negative
pressure of 67 kPa. Confirm that the negative pressure
leaks immediately when the finger is released.
Air blow-in Air ventilation
direction
(A) → (B) Not ventilated
(A) → (B) Ventilated
(B) → (A) Not ventilated
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