Nissan Sentra Service Manual: System description
In-cabin microfilter
Description
FUNCTION
Air inside the passenger compartment is kept clean at either recirculation or fresh mode by installing an in-cabin microfilter into the heating and cooling unit assembly.
Periodic maintenance
In-cabin microfilter
Exploded View
Removal and Installation
REMOVAL
Remove the in-cabin microfilter cover.
CAUTION:
Before removing the in-cabin micofilter cover, let the vehicle rest ...
Other materials:
Intermittent Incident
DESCRIPTION
Sometimes the symptom is not present when the vehicle is brought in for
service. If possible, re-create the
conditions present at the time of the incident. Doing so may help avoid a No
Trouble Found Diagnosis. The fol-
lowing section illustrates ways to simulate the conditions/env ...
Cowl top
Exploded view
Cowl top seal
Cowl top grille cap
Cowl top cover
Cowl top extension
Cowl top extension insulator
Clip
EPT seal [t: 3.0 mm (0.12 in)
Cowl top cover cap
EPT seal [t: 5.0 mm (0.20 in)]
Pawl
Clip
Front
Removal and installation
COWL TOP COVER
Removal
Rem ...
P0139 HO2S2
DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time
between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen
storage capacity of the three way catalyst 1 causes the longer
switching time. To judge the malfunctions of heated oxygen sensor
2, ...
