Toyota Tundra Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT AIR FUEL RATIO SENSOR

(a) Disconnect the 2 air fuel ratio sensor connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (HA1A) - 2 (+B)

(for Bank 1)

20°C (68°F)

1.6 to 3.2 Ω

1 (HA2A) - 2 (+B)

(for Bank 2)

Text in Illustration

for Bank 1

for Bank 2

Component without harness connected

(Air Fuel Ratio Sensor)

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

Toyota Tundra Owners Manual > Steps to take in an emergency: If a warning light turns on or a warning buzzer sounds
Calmly perform the following actions if any of the warning lights comes on or flashes. If a light comes on or flashes, but then goes off, this does not necessarily indicate a malfunction in the system. However, if this continues to occur, have the vehicle inspected by your Toyota dealer. Warning li ...

Toyota Tundra Owners Manual