Secondary Air Injection Sensor 2 -G610-, Checking: General Description

The secondary air injection system blows air into the exhaust on a cold-start of the engine for 45 - 100 seconds and serves to quickly heat the catalytic converter(s) for improved emissions. A pressure based secondary air diagnostics function is used. In this system, the signal from the Secondary Air Injection Sensor 2 -G610- is evaluated by the Engine Control Module -J623-. The injected air quantity is determined from the pressure level.

Special Tools And Workshop Equipment Required 

• Multimeter.
• Wiring Diagram.
• Scan Tool.