Air Injection: Description and Operation

Secondary Air Injection (AIR) System, Overview:

- With the Secondary Air Injection System, air is blown behind the exhaust valves during a cold start, 8°-55°C (46°-131°F) engine coolant temperature, for a short time (temperature dependent).

- The system is activated by the Engine Control Module (ECM) -J192- via the Secondary Air Injection (AIR) pump relay -J299-, Secondary Air Injection (AIR) solenoid valve -N 112- and the two combination valves.