Component Inspection (A/F Sensor 1 Heater)

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK AIR FUEL RATIO (A/F) SENSOR 1

Turn ignition switch OFF.
Disconnect air fuel ratio (A/F) sensor 1 harness connector.

Check resistance between A/F sensor 1 terminals as per the following.

A/F sensor 1		Resistance
+	-
Terminal
2	1	1.80 - 2.44 Ohm [at 20 deg.C (68 deg.F)]
	3	Not exist
	4
1	3
	4

Is the inspection result normal?

YES

INSPECTION END

GO TO 2.

REPLACE A/F SENSOR 1
Replace malfunctioning A/F sensor 1. Refer to Exploded View .
CAUTION:
- Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
- Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant (commercial service tool).
INSPECTION END