Oxygen Sensor After Three Way Catalytic Converter -G130-, CHECKING: Function

The Oxygen Sensor After Three Way Catalytic Converter -G130- downstream of the primary catalytic converter supplies the Engine Control Module -J623- with a voltage signal (nonlinear) indicating "rich" or "lean. If the primary catalytic converter is supersaturated with oxygen (lean mixture), Oxygen Sensor After Three Way Catalytic Converter -G130- will send the Engine Control Module -J623- a nonlinear signal indicating the lean mixture condition. The mixture is then enriched with fuel until the oxygen has been "displaced" from the catalytic converter. This condition, in turn, is registered by Oxygen Sensor After Three Way Catalytic Converter -G130- as a nonlinear signal indicating the rich mixture condition. The mixture is then leaned out by the Engine Control Module -J623-. If the nonlinear signal is received again, the mixture will again be enriched. The frequency, or period, during which the mixture is enriched or leaned out is variable, being dependent on the gas flow rate (engine load) at that moment.

The Oxygen Sensor After Three Way Catalytic Converter -G130- contains the following components:

• The Heater For Oxygen Sensor 1 After Catalytic Converter -Z29-

The Oxygen Sensor After Three Way Catalytic Converter -G130- components cannot be serviced separately, it must be serviced as a unit.

Special tools and workshop equipment required 

• Multimeter
• Wiring Diagram
• Scan Tool