Nissan Sentra B18 (2020-2025) Service Manual: Internal Heat Exchanger
Removal and Installation
REMOVAL
Discharge the refrigerant. Refer to Recycle Refrigerant.
Remove front under cover. Refer to Removal and Installation.
Remove nut
(A) and disconnect internal heat exchanger (1) from compressor
(2). 
Remove bolt
(A) and disconnect internal heat exchanger from expansion
valve. 
Remove bolt
(A) and disconnect high-pressure pipe from internal heat
exchanger. 
Remove nut
(A) and separate internal heat exchanger from body. 
Remove internal heat exchanger.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
-
Do not reuse O-rings.
-
Apply A/C oil to new O-rings.
-
After charging refrigerant, check for leaks. Refer to Leak Test.
High-Pressure Pipe
Removal and Installation
Removal and Installation
REMOVAL
Discharge
the refrigerant. Refer to Recycle Refrigerant.
Remove bolt
(A) and disconnect high-pressure pipe from internal h ...
Refrigerant Pressure Sensor
Removal and Installation
Removal and Installation
The
refrigerant pressure sensor is an integral part of the high
pressure pipe.
If
replacement of the refrigerant pressure sen ...
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DTC detection
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