Pinpoint Tests: Notes
WARNING: This page is about a different car, the 2015 Ford C-Max. However, it is still accessible from the selected car via links, so may be relevant.
P0532, P0533
Refer to AUTOMATIC CLIMATE CONTROL SYSTEM for schematic and connector information.
Normal operation and Fault Conditions
The A/C pressure transducer receives a ground from the PCM. A 5-volt reference voltage is supplied to the A/C pressure transducer from the PCM. The A/C pressure transducer then sends a voltage to the PCM to indicate the A/C pressure.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0532 | A/C Refrigerant Pressure Sensor "A" Circuit Low | The A/C pressure transducer inputs a feedback voltage to the PCM. This DTC sets if the feedback voltage is less than 0.26 volts for at least 2 seconds and the ambient air temperature is greater than 0°C (32°F). |
| P0533 | A/C Refrigerant Pressure Sensor "A" Circuit High | The A/C pressure transducer inputs a feedback voltage to the PCM. This DTC sets if the feedback voltage is greater than 4.95 volts for at least 2 seconds and the ambient air temperature is greater than 0°C (32°F). |
Possible Sources
- Wiring, terminals or connectors
- A/C pressure transducer
- PCM
Visual Inspection and Diagnostic Pre-checks
- Inspect for loose or corroded PCM and A/C pressure transducer connections.