P1598

Tests 1 - 2:

Tests 3 - 7:

Test 8:

SYMPTOM
P1598-A/C PRESSURE SENSOR VOLTS TOO HIGH

WHEN MONITORED
Engine running. The A/C relay energized.

SET CONDITION
The A/C pressure sensor signal at the PCM goes above 4.92 volts.

POSSIBLE CAUSES
- Intermittent Condition
- A/C Pressure Sensor Signal Circuit Shorted To 5 Volt Supply Circuit
- A/C Pressure Sensor Signal Circuit Shorted To Battery Voltage
- A/C Pressure Sensor Internal Failure
- A/C Pressure Sensor Signal Circuit Open
- Sensor Ground Circuit Open
- PCM