Component Inspection
- Ignition "OFF"
- Measure resistance between power terminal and control terminal of the sensor connector (Component side).RESISTANCE SPECIFICATION
Temp. (°C) Temp. (°F) Heater Resistance (Ω) 18 ~ 20 64 ~ 82 9.0 - Is resistance within specification?
YES
- Check for poor connection between PCM/ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
NO
- Check HO2S for contamination, deterioration, or damage. Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to "VERIFICATION OF VEHICLE REPAIR " procedure