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P0532-A/C PRESSURE SENSOR LOW —
TEST
3
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
With the DRBIII , monitor the A/C Pressure Sensor voltage.
Turn the ignition on.
Is the voltage above 0.6 of a volt?
Yes → Replace the A/C Pressure Sensor.
No
4
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (C18) A/C Pressure Signal circuit in
the A/C Pressure Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (C18) A/C Pressure Signal
No
5
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (C18) A/C Pressure Sensor Signal circuit and the
(K4) Sensor ground circuit in the A/C Pressure Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to the (K4) Sensor ground circuit in the (C18) A/C
No
6
NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
Repair
7
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K7) 5 Volt Supply circuit in the A/C
Pressure Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K7) 5 Volt Supply circuit.
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Go To 4
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Go To 5
Pressure Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Go To 6
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Go To 8
DRIVEABILITY - NGC
Continued
211
APPLICABILITY
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