Refrigerant Pressure Sensor Inspection (Auto A/C)
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
- Install the manifold gauge. (See REFRIGERANT SYSTEM GENERAL PROCEDURES .)
- Verify the high-pressure side reading of the manifold gauge.
- Measure the terminal voltage at PCM terminal 2BB, 2AX and 2AJ.
- Using the graph below, measure and verify the terminal voltages at 2AX.
- Follow the PCM inspection when measuring the other terminal voltages. (See PCM INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5]
.)
- Terminal 2BB: Approx. 5 V (Ignition switch ON)
- Terminal 2AJ: 1.0 V or less
- If each voltage is not normal, inspect the related wiring harness.
- If there is any malfunction, replace the related wiring harness.
- If the wiring harness is normal, replace the refrigerant pressure sensor. (See REFRIGERANT PRESSURE SENSOR REMOVAL/INSTALLATION (AUTO A/C) .)