Component Inspection
- 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
3
4
1.80 - 2.44 Ohm [at 20 deg.C (68 deg.F)]
1
Not exist
2
4
1
2
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 EXHAUST MANIFOLD AND THREE WAY CATALYST : 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