Pathfinder LE 2WD V6-3.3L (VG33E) (1999)
Oxygen Sensor: Testing and Inspection
To VIN # 350000
FRONT HEATED OXYGEN SENSOR
With CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Select "MANU TRIG" and "HI SPEED" in "DATA MONITOR" mode with CONSULT. and select "FR O2 SEN-B1 (-B2)" and "FR O2
MNTR-B1 (-B2)".
(3) Hold engine speed at 2,000 rpm under no load during the following steps.
(4) Touch "RECORD" on CONSULT screen.
(5) Check the following.
-
"FR O2 MNTR-B1 (-B2)" in "DATA MONITOR" mode changes from "RICH" to "LEAN" to "RICH" 5 times in 10 seconds.
5 times (cycles) are counted as shown left:
R = "FR O2 MNTR-B1 (-B2)", "RICH"
L = "FR O2 MNTR-B1 (-B2)", "LEAN"
-
"FR O2 SEN-B1 (-B2)" voltage goes above 0.6 V at least once.
-
"FR O2 SEN-B1 (-B2)" voltage goes below 0.3 V at least once.
-
"FR O2 SEN-B1 (-B2)" voltage never exceeds 1.0 V.
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.