Pinpoint Test A : P0532, P0533: Notes
Refer to MANUAL 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 0.620 volt for at least 1 second 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 4.90 volts for at least 1 second 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.