Nissan Sentra Service Manual: Removal and installation
A/C ASSEMBLY SWITCH
Removal and Installation
Removal
- Remove the cvt shift selector finisher (cvt: re0f11a). Refer to tm-253, "removal and installation".
- Remove the MT shift selector finisher (6MT: RS6F94R). Refer to TM-22, "Exploded View".
- Remove the front air control screws.
- Release the front air control metal clips using a suitable tool.
- Disconnect the harness connectors from the A/C assembly switch and remove.
Installation
Installation is in the reverse order of removal.
A/C AUTO AMP
Exploded View
- AV control unit bracket (LH)
- AV control unit bracket (RH)
- A/C auto amp.
- AV control unit
Removal and Installation
REMOVAL
- Remove the AV control unit. Refer to AV-406, "Removal and Installation".
- Remove the AV control unit bracket screws (A).
- Remove the A/C auto amp.
INSTALLATION
Installation is in the reverse order of removal.
INTAKE SENSOR
Removal and Installation
The intake sensor is serviced as an assembly with the heating and cooling unit assembly. Refer to HA-43, "HEATING AND COOLING UNIT ASSEMBLY : Removal and Installation".
Refrigerant pressure sensor
Removal and Installation
REMOVAL
- Discharge the refrigerant. Refer to HA-23, "Recycle Refrigerant".
- Remove the core support upper. Refer to HA-39, "Exploded View".
- Disconnect the harness connector from the refrigerant pressure sensor.
- Remove the refrigerant pressure sensor (1).
CAUTION:
Cap or wrap the opening of the refrigerant pressure sensor with suitable material such as vinyl tape to avoid the entry of air.
Installation
Installation is in the reverse order of removal.
Caution:
- Do not reuse o-ring.
- Apply a/c oil to the o-ring of the refrigerant pressure sensor for installation.
- After charging refrigerant, check for leaks. Refer to ha-21, "leak test".
Door motor
Exploded View
- Heating and cooling unit assembly
- Intake door motor
- Mode door motor
- Air mix door motor
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR : Removal and Installation
Removal
- Remove the heating and cooling unit assembly. Refer to ha-43, "heating and cooling unit assembly : removal and installation".
- Disconnect the harness connector from the intake door motor.
- Remove the intake door motor screws and the intake door motor.
Installation
Installation is in the reverse order of removal.
MODE DOOR MOTOR
MODE DOOR MOTOR : Removal and Installation
Removal
- Remove the front floor duct LH. Refer to HA-42, "Exploded View".
- Disconnect the harness connector from the mode door motor.
- Remove the mode door motor screws and the mode door motor.
Installation
Installation is in the reverse order of removal.
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR : Removal and Installation
Removal
- Remove the glove box assembly. Refer to IP-22, "Removal and Installation".
- Disconnect the harness connector from the air mix door motor
- Remove the air mix door motor screws and the air mix door motor.
Installation
Installation is in the reverse order of removal.
BLOWER MOTOR RESISTOR
Removal and Installation
Removal
- Remove the instrument lower panel LH. Refer to IP-21, "Removal and Installation".
- Disconnect the harness connector from the blower motor resistor.
- Release the pawls using a suitable tool and remove the blower motor resistor.
Installation
Installation is in the reverse order of removal.
Symptom diagnosis
HEATER AND AIR CONDITIONING SYSTEM
CONTROL SYMPTOMS
Symptom Table
INSUFFICIENT COOLING
Component Function Check
Symptom: insufficient cooling
Inspection flow
1. Confirm symptom by performin ...
Body interior
...
Other materials:
P0420 Three way catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage c ...
Sensor rotor
Front sensor rotor
FRONT SENSOR ROTOR : Removal and Installation
The front wheel sensor rotor is an integral part of the wheel
hub and bearing assembly and cannot be disassembled.
Refer to FAX-8, "Removal and Installation".
Rear sensor rotor
REAR SENSOR ROTOR : Removal and Install ...
Precaution
Precaution for supplemental restraint system (SRS) "air bag" and "seat
belt pre-tensioner"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injur ...