Component Inspection (A/F Sensor 1 Heater)
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK A/F SENSOR 1
- Turn ignition switch OFF.
- Disconnect A/F sensor 1 harness connector.
- Check resistance between A/F sensor 1 terminals as follows.
A/F sensor 1
Condition
Resistance
Terminal
1
2
Temperature
25 deg.C (77 deg.F)
1.80 - 2.44 Ω
3
∞Ω
(Continuity should not exist)
4
2
3
4
3
4
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning A/F sensor 1.Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST .