P1599
Tests 1 - 2:
Tests 3 - 7:
Tests 8 - 10:
SYMPTOM
P1599-A/C PRESSURE SENSOR VOLTS TOO LOW
WHEN MONITORED
With the engine running and the A/C Relay energized.
SET CONDITION
The A/C Pressure Sensor Signal voltage at the PCM goes below 0.58 volts for 2.6 seconds.
POSSIBLE CAUSES
- Intermittent condition
- 5 Volt supply circuit shorted to ground
- 5 Volt supply circuit open
- A/C pressure sensor internal failure
- A/C pressure sensor signal circuit shorted to ground
- A/C pressure sensor signal circuit shorted to sensor ground circuit
- PCM 5 Volt supply circuit
- PCM A/C pressure sensor signal