Inspection [11/2018 - ]: Procedure

INSPECT AIR FUEL RATIO SENSOR

for Sensor 1:

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

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.

for Sensor 2:

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

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

Standard Resistance

Tester Connection	Condition	Specified Condition
1 (HA1B) - 2 (+B)	20°C (68°F)	2 to 6 Ω
1 (HA1B) - 4 (A1B-)	Always	10 kΩ or higher

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