Nissan Sentra B18 (2020-2025) Service Manual: Heating and Cooling Unit Assembly
Removal and Installation
REMOVAL
Discharge the refrigerant. Refer to Recycle Refrigerant.
Remove bolt
(A) and disconnect internal heat exchanger from expansion
valve. 
CAUTION:
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
Disconnect the heater hoses from the heater core.
Remove the front wiper drive assembly. Refer to Removal and Installation.
Remove
steering member bolt (A) in engine room. 
Remove the instrument panel assembly. Refer to Removal and Installation.
Remove left knee air bag module. Refer to Removal and Installation.
Remove right knee air bag module. Refer to Removal and Installation.
Remove bolt
(A) and separate lower joint (2) from steering column (1). 
CAUTION:
Place a matching mark on both lower joint and steering column before separating lower joint.
Remove
bolts (A) and lower steering column to the floor. 
Remove heating and cooling unit assembly bolts. Refer to Exploded View.
Disconnect all necessary harness connectors.
Remove steering member bolts. Refer to Exploded View.
Lower steering member assembly to the floor and remove heating and cooling unit assembly.
INSTALLATION
Installation is in the reverse order of removal.
Exploded View
Exploded View
Removal and Installation
1.
Heating and cooling unit
assem ...
Blower Unit
Removal and Installation
Removal and Installation
REMOVAL
Remove the
heating and cooling unit assembly. Refer to Removal and Installation.
Disconnect
harness connector from intake ...
Other materials:
Increasing fuel economy
Keep your engine tuned up.
Follow the recommended scheduled maintenance.
Keep the tires inflated to the correct pressure.
Low tire pressure increases tire wear
and lowers fuel economy.
Keep the wheels in correct alignment. Improper
alignment increases tire wear and
lowers fuel eco ...
Confirmation Procedure
Confirmation Procedure
PERFORM DTC CONFIRMATION
PROCEDURE
CONSULT
Erase DTC.
Ignition switch OFF.
Ignition switch ON.
...
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 ...
