Secondary Air Injection Combination Valves, Checking For Function And Leaks: Procedure:

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Vacuum lines and hose connections not leaking.
Vacuum lines not blocked.

-- Remove the engine covers -1 and 2- upward.

Fig 1: Engine Cover -2-

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-- Remove the vacuum hose on the secondary air injection solenoid valve to be checked.

Fig 2: Identifying Vacuum Hose -2-

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-1- Secondary Air Injection Solenoid Valve -N112- for Bank 1 (right).

-2- Secondary Air Injection Solenoid Valve 2 -N320- for Bank 2 (left).

-- Connect the Hand Vacuum Pump: VAS6213 to the vacuum hose for the secondary air injection solenoid valve to be checked.

-- Remove the front secondary air injection hose -arrow- from its bracket and disconnect it; do to so press the release buttons.

Fig 3: Identifying Front Air Hose -Arrow

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-- Blow into the hose to the combination valves using light pressure (do not use compressed air).

The secondary air injection combination valves must be closed. It must not be possible to blow through.

-- Operate the hand vacuum pump.

The relevant combination valve must open, it must be possible to blow through.

-- If the secondary air injection combination valve does not open, replace it. Refer to left LEFT SECONDARY AIR INJECTION COMBINATION VALVE, REMOVING AND INSTALLING and right RIGHT SECONDARY AIR INJECTION COMBINATION VALVE, REMOVING AND INSTALLING .