Air Fuel Ratio Sensor: Inspection: Inspection

INSPECT AIR FUEL RATIO SENSOR

Measure the resistance according to the value(s) in the table below.

Fig 1: Identifying Air Fuel Ratio Sensor Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
(HA1A) - (+B)	20°C (68°F)	1.8 to 3.4 Ω
(HA1A) - (A1A-)	-	10 kΩ or higher

If the resistance is not as specified, replace the air fuel ratio sensor.