1.CHECK HEATED OXYGEN SENSOR 2 HEATER

1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 harness connector.
3. Check resistance between HO2S2 terminals as follows.

   Terminal | Resistance
   2 and 3 | 3.4 - 4.4 Ω [at 25°C (77°F)]
   1 and 2, 3, 4 | ∞Ω (Continuity should not exist)
   4 and 1, 2, 3

Is the inspection result normal?
YES>>INSPECTION END
NO>>GO TO 2.
2.REPLACE HEATED OXYGEN SENSOR 2
Replace malfunctioning heated oxygen sensor 2.
■ CAUTION ■

- Discard any heated oxygen 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 oxygen 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