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 *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.