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 Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance (for Bank 1)

Tester Connection	Condition	Specified Condition
1 (HA1A) - 2 (+B)	20°C (68°F)	1.8 to 3.4 Ω
1 (HA1A) - 4 (A1A-)	Always	10 kΩ or higher

Standard Resistance (for Bank 2)

Tester Connection	Condition	Specified Condition
1 (HA2A) - 2 (+B)	20°C (68°F)	1.8 to 3.4 Ω
1 (HA2A) - 4 (A2A-)	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

*A	for Bank 1
*B	for Bank 2
*a	Component without harness connected (Air Fuel Ratio Sensor)

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