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Component Inspection

CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER

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		Condition		Resistance
+	-
Terminal
3	4	Temperature	25 deg. C (77 deg. F)	1.80 - 2.44 Ohms
	1			Not existed
	2
4	1
	2

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 2.

REPLACE A/F SENSOR 1
Replace 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.
INSPECTION END