Air Fuel Ratio Sensor Relay: Inspection

INSPECT AIR FUEL RATIO SENSOR RELAY

Inspect A/F relay

Using an ohmmeter, measure the resistance between the terminals.

Fig 1: Measuring Resistance Between Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Resistance

TESTER CONNECTIONS AND SPECIFIED CONDITIONS

Tester Connection	Specified Condition
1F-1 - 1C-6	10 k or higher
1F-1 - 1C-6	Below 1 (Apply battery voltage to terminals 1D-5 and 1H-2)

If the result is not as specified, replace the engine room junction block assembly.