Symptom:
P0532-A/C PRESSURE SENSOR LOW
When Monitored and Set Condition:
P0532-A/C PRESSURE SENSOR LOW
When Monitored: The engine running. 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. One Trip Fault.
POSSIBLE CAUSES
A/C PRESSURE SENSOR VOLTAGE BELOW 0.6 VOLTS
(K7) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K7) 5 VOLT SUPPLY CIRCUIT OPEN
A/C PRESSURE SENSOR INTERNAL FAILURE
(C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND
(C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO (K4) SENSOR GROUND CIRCUIT
PCM (K7) 5 VOLT SUPPLY CIRCUIT
PCM A/C PRESSURE SENSOR SIGNAL
TEST ACTION APPLICABILITY
1 NOTE: Ensure the A/C refrigerant System is properly charged per the
Service Information.
Start the engine.
With the DRBIIIt, read the A/C Pressure Sensor voltage.
Is the voltage below 0.6 of a volt?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-2-NGC.
2 Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (K7) 5 Volt Supply circuit in the A/C Pressure Sensor
harness connector.
Is the voltage between 4.5 to 5.2 volts?
All
Yes → Go To 3
No → Go To 7
210
DRIVEABILITY - NGC
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