SX4 4WD L4-2.0L (2008)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
A/C Refrigerant Pressure Sensor and Its Circuit Inspection
Reference: A/C Refrigerant Pressure Sensor Removal and Installation:Manual Type
1. Disconnect A/C refrigerant pressure sensor connector.
2. Turn ignition switch to ON position.
3. Check if voltage between "RED" wire terminal and "ORN" wire terminal of A/C refrigerant pressure sensor connector is 4.75 V to 5.25 V.
If not, check A/C refrigerant pressure sensor circuit.
4. Connect A/C refrigerant pressure sensor connector with ignition switch turned OFF.
5. Connect manifold gauge set to the charging valves.
6. Check A/C refrigerant pressure sensor voltage of ECM connector referring to A/C System Inspection at ECM:Manual Type.
If voltage is not as specified below, replace A/C refrigerant pressure sensor.
A/C refrigerant pressure sensor voltage specifications (A/C refrigerant pressure measured by manifold gauge)
0.8 MPa (8.0 kgf/sq.cm, 116 psi): 1.40 - 1.78 V
1.4 MPa (14 kgf/sq.cm, 203 psi): 2.18 - 2.64 V
1.6 MPa (16 kgf/sq.cm, 232 psi): 2.44 - 2.92 V
1.8 MPa (18 kgf/sq.cm, 261 psi): 2.70 - 3.21 V