Oxygen Sensor Relay: Testing and Inspection
Power Relay TestNormally-open type, A:
Check for continuity between the terminals.
- There should be continuity between the No.1 and No.2 terminals when power and ground are connected to the No.3 and No.4 terminals.
- There should be no continuity between the No.1 and No.2 terminals when power is disconnected.
Air Fuel Ratio Sensor Relay