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EC-140 < COMPONENT DIAGNOSIS > [QR25DE] P0043, P0044 HO2S3 HEATER 3. Check resistance between HO2S3 terminals as follows. Is the inspection result normal? YES >> INSPECTION END NO >> GO TO 2. 2. REPLACE HEATED OXYGEN SENSOR 3 Replace heated oxygen sensor 3. 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 J-43897-12)] and approved anti-seize lubricant (commercial service tool). >> INSPECTION END Terminals Resistance 2 and 3 3.3 - 4.4 Ω [at 25°C (77°F)] 1 and 2, 3, 4 ∞Ω (Continuity should not exist) 4 and 1, 2, 3 PBIB3310E |