Heated Oxygen Sensor Heaters No. 1 & 2
WARNING: This page is about a different car, the 2003 Suzuki XL-7, 2003 Suzuki Vitara, 2003 Suzuki Grand Vitara, and 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Disconnect Heated Oxygen (HO2S) sensor No. 1 or 2 pigtail connector. Using an ohmmeter, measure resistance between VB and GND terminals. See Figure . See HEATED OXYGEN SENSOR HEATER RESISTANCE table. Replace HO2S if resistance is not as specified.
HEATED OXYGEN SENSOR HEATER RESISTANCE @ 68°F (20°C)
| Application | Ohms | |||
|---|---|---|---|---|
| Aerio | ||||
| HO2S No. 1 | 2.0-6.0 | |||
| HO2S No. 2 | 4.0-10.0 | |||
| Grand Vitara & XL-7 | 5.0-7.0 | |||
| Vitara | ||||
| With Warm-up Three-Way Catalyst (1) | 4.5-5.7 | |||
| Without Warm-up Three-Way Catalyst | 11.7-14.3 | |||
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