Air Fuel Ratio Sensor: Inspection: Inspection

WARNING: This page is about a different variant/trim than selected.

INSPECT AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

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

Fig 1: Measuring Air Fuel Ratio Sensor Resistance (For Bank 1 Sensor 1)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TEXT IN ILLUSTRATION

*a	Component without harness connected (Air Fuel Ratio Sensor)

Standard Resistance

Tester Connection	Condition	Specified Condition
1 (HA1A) - 2 (+B)	20°C (68°F)	1.6 to 3.2 Ω
1 (HA1A) - 4 (A1A-)	Always	10 kΩ or higher

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