Q45 V8-4130cc 4.1L DOHC MFI (VH41) (1998)
Heated 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.