DTC Troubleshooting: P0532
DTC P0532:
 A/C Pressure Sensor Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
  1. Start the engine, and let it idle.
  1. Turn the blower switch on.
  1. Turn the A/C switch on.
  1. Check the A/C PRESSURE SENSOR in the DATA LIST with the HDS.
Is there about 0.3 V or less?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/C pressure sensor and the ECM/PCM.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the A/C pressure sensor 3P connector.
  1. Turn the ignition switch to ON (II).
  1. Check the A/C PRESSURE SENSOR in the DATA LIST with the HDS.
Is there about 0.3 V or less?
YES -
Go to Step 10 .
NO -
Go to Step 9 .
  1. Measure the voltage between A/C pressure sensor 3P connector terminals No. 1 and No. 3.
Is there about 5 V?
YES -
Go to Step 18 .
NO -
Go to Step 14 .
  1. Turn the ignition switch to LOCK (0).
  1. Jump the SCS line with the HDS.
  1. Disconnect ECM/PCM connector A (49P).