Inspection [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT AIR FUEL RATIO SENSOR
- Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(Air Fuel Ratio Sensor)Standard Resistance
Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.4 to 3.0 Ω 1 (HA1A) - 4 (A1A-) Always 10 kΩ or higher If the result is not as specified, replace the air fuel ratio sensor.
- Measure the resistance according to the value(s) in the table below.