On a 2015 Chevy Cruze, the primary A/C pressure switch is located on the low‑pressure (suction) line between the evaporator and the compressor, typically on the passenger side of the engine bay near the accumulator/drier. Some Cruze models also have a high‑pressure switch on the high‑pressure line close to the condenser, depending on the engine and A/C configuration.
How the AC pressure switches function
The air conditioning system uses two sensors to protect the compressor: a low‑pressure switch (LPS) that can shut the system down if refrigerant pressure drops too low, and a high‑pressure switch (HPS) that can trigger shutdown if pressure becomes too high. Both are small sensors mounted on the refrigerant lines with Electrical connectors feeding signals to the vehicle’s control modules.
Where to look on a 2015 Cruze
To locate the sensors, trace the two main refrigerant lines in the engine bay: the suction/low‑pressure line running from the evaporator toward the compressor, and the discharge/high‑pressure line running from the compressor toward the condenser. The switches are small threaded sensors with multi‑pin electrical connectors.
Low‑pressure switch locations
- Mounted on the suction/low‑pressure line between the evaporator and the compressor.
- Often found on the passenger side of the engine bay, near the accumulator/drier assembly.
- Typically has a two‑ or three‑wire electrical connector.
- Connector is usually an inline plug with a weather‑resistant seal.
- Access may require moving nearby hoses or shielding; work with the system off and depressurized if needed.
Concluding note: The low‑pressure switch is the most commonly referenced A/C sensor in Cruze models; locating it on the suction line near the accumulator/drier is a reliable starting point.
High‑pressure switch locations
- Mounted on the high‑pressure (discharge) line, between the compressor and the condenser, or near the condenser inlet on some layouts.
- Typically located toward the top of the engine bay, near the condenser or along the high‑pressure line.
- Connector is generally a two‑ or three‑wire harness similar to the LPS.
- Sensor may be threaded into the line or attached via a clamp fitting.
- In some configurations, the HPS may be integrated into the condenser assembly itself.
Concluding note: The high‑pressure switch is present on some Cruze configurations but may not be easily visible in all engines; check both the condenser area and the high‑pressure line for the sensor.
Summary
For most 2015 Cruze models, begin by locating the low‑pressure switch on the suction line between the evaporator and the compressor, near the accumulator/drier on the passenger side of the engine bay. If you don’t find it there, inspect the high‑pressure line between the compressor and condenser, as some layouts mount the switch on that line or near the condenser. When diagnosing, verify the exact sensor type and wiring against the vehicle’s service manual and consider professional assistance for safe handling of the A/C system.