 1.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 follows.
Terminal
| Resistance
| 3 and 4
| 1.98 - 2.66 Ω [at 25°C (77°F)]
| 3 and 1, 2
| ∞Ω (Continuity should not exist)
| 4 and 1, 2
|
Is the inspection result normal?
YES >>INSPECTION END NO >>GO TO 2.
 2.REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1. ■ CAUTION ■ - Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (1.6 ft) onto a hard surface such as a concrete floor; use a new one.
- Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant (commercial service tool).
>>INSPECTION END
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