HO2S Heater Inspection
- Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.5] .)
- Disconnect the HO2S connector.
- Measure the HO2S resistance between terminals C and D.
- If not as specified, replace the HO2S. (See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION .)
HO2S heater resistance
- 2-50 ohms