200SX SE-R L4-1998cc 2.0L DOHC MFI (SR20DE) (1998)
Oxygen Sensor: Testing and Inspection
Front Heated Oxygen Sensor Heater
COMPONENT INSPECTION
Front Heated Oxygen Sensor Heater
Check resistance between terminals (3) and (1).
Resistance: 2.3 - 4.3 Ohms at 25°C (77°F)
Check continuity between terminals (2) and (1), (3) and (2).
Continuity should not exist.
If NG, replace the front heated oxygen sensor
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.