A/C Pressure Sensor
Disconnect A/C pressure sensor connector. Using an ohmmeter, measure resistance between sensor terminals. See A/C PRESSURE SENSOR VOLTAGE SPECIFICATIONS table. If resistance is not as specified, replace sensor.
NOTE:
A/C pressure sensor voltage for DENSO system should be about 0.7-0.9 volts with ignition key on and engine off. This is an analog signal that increases toward 5 volts as A/C pressure increases.
A/C PRESSURE SENSOR VOLTAGE SPECIFICATIONS (ME7)
| A/C Pressure - psi (kPa) | Volts |
|---|---|
| 0 | 0.25 |
| 75 (517) | 1 |
| 175 (1206 | 2 |
| 275 (1894) | 3 |
| 450 (3100) | 4.75 |