Diesel Data: Automotive Repair

Component Inspection





Component Inspection

Check HO2S (B1/S2) Heater resistance
1. IG "OFF" and disconnect HO2S (B1/S2) connector
2. Measure resistance between power and control terminals of HO2S (B1/S2) heater (Component Side)

Specification : 3.3 Ohms at 21 °C (69.8 °F)





3. Is the measured resistance within specification?