Toyota Tundra Service Manual: On-vehicle Inspection

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Engine Control / Air Fuel Ratio Sensor / 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

*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.

(c) Connect the 2 air fuel ratio sensor connectors.

    Installation

    Removal

    See More:

    Toyota Tundra Service Manual > Can Communication System: Check Bus 1 Line for Short to GND
    DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 23 (CA1H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 8 (CA1L) of the central gateway ECU (network gateway ECU) and termina ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2026 Copyright www.ttundra.com
    0.0107