Air Fuel Ratio Sensor Relay: Inspection

INSPECT AIR FUEL RATIO SENSOR RELAY

Using an ohmmeter, measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
3 - 5	10 kΩ or higher
3 - 5	Below 1 Ω (Apply battery voltage between terminals 1 and 2)

If the result is not as specified, replace the relay.

Fig 1: Identifying Air Fuel Ratio Sensor Relay Terminals