Maxima SE V6-3.0L (VQ30DE) (1998)
With CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "RR O2 SENSOR" as the monitor item with CONSULT.
(3) Check "RR O2 SENSOR" at idle speed when adjusting "FUEL INJECTION" to ±25%.
"RR O2 SENSOR" should be above 0.48V at least once when the "FUEL INJECTION" is +25%.
"RR O2 SENSOR" should be below 0.43V at least once when the "FUEL INJECTION" is -25%.
Rear Heated Oxygen Sensor Heater
COMPONENT INSPECTION
Rear heated oxygen sensor heater
Check the following.
1. Check resistance between terminals (4) and (1).
Resistance: 2.3 - 4.3 Ohms at 25°C (77°F)
2. Check continuity.
If NG, replace the rear 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.