Component Inspection (A/F Sensor 1 Heater)

WARNING: This page is about a different variant/trim than selected.

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

NO

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