Nissan Sentra B18 (2020-2025) Service Manual: Refrigerant System Protection
Refrigerant pressure sensor
The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure sensor, located on the high-pressure pipe. If the system pressure rises above or falls below the specifications, the refrigerant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM. The ECM then ceases to supply power to the A/C relay which disengages and stops the compressor when pressure on the high pressure side (as detected by refrigerant pressure sensor) is over approximately 1,520 kPa (15.5 kg/cm2, 220.4 psi), or below approximately 182 kPa (1.86 kg/cm2, 26.39 psi).
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor. When the pressure of refrigerant in the system increases to an abnormal level [more than 3,010 kPa (30.7 kg/cm2, 436.45 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere.
Refrigerant Cycle
Refrigerant Cycle
Refrigerant flow
1.
Electric compressor
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Other materials:
Battery
If the battery is labeled "do not open", it is a maintenance-free battery
and the battery fluid level should not be checked. For accurate battery condition
assessment, it is recommended that you visit a NISSAN dealer or a qualified
specialist workshop to confirm proper batt ...
Component Parts
Component Parts Location
Component Parts Location
1.
Distance sensor
2.
TCM
3.
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Bluetooth connections screen
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(back) key
Bluetooth tab
Connections screen
"Add New" key
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"
(settings) key
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"
(info) key
"
"
(Bluetooth Audio connection) key
"
"
(Bluetooth Hands-Free Phone
System connection) key
U ...
