Heated Oxygen Sensor 2 Heater

Check resistance between HO2S2 terminals as follows.

Fig 1: Checking Resistance Between HO2S2 Terminals

Courtesy of SUZUKI OF AMERICA CORP.

TERMINAL RESISTANCE CHART

Terminal No.	Resistance
2 and 3	9.9 - 13.3 Ω [at 25 °C (77 °F)]
1 and 2, 3, 4	∞Ω (Continuity should not exist)
4 and 1, 2, 3	∞Ω (Continuity should not exist)

If NG, replace heated oxygen sensor 2.
CAUTION:
- Discard any heated oxygen 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 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).