Component Inspection

CHECK AIR FUEL RATIO (A/F) SENSOR 1

Turn ignition switch OFF.
Disconnect A/F sensor 1 harness connector.

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

A/F sensor 1		Resistance
+	-
Terminal
1	2	1.8 - 2.44 Ω [at 20°C (68°F)]
	3	∞Ω (Continuity should not exist)
	4
2	3
2	4
3	4

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 2.

REPLACE A/F SENSOR 1
Replace air fuel ratio A/F sensor 1. Refer to TURBOCHARGER : Exploded View .
CAUTION:
- Discard any 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 sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial service tool).
>>

INSPECTION END