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. Turn the ignition switch ON (II).
2. Check the A/C PRESSURE SENSOR in the DATA LIST with the HDS.

Is there about 0.24 V or less?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the A/C pressure sensor and the PCM.

3. Turn the ignition switch OFF.
4. Disconnect the A/C pressure sensor 3P connector.
5. Turn the ignition switch ON (II).
6. Check the A/C PRESSURE SENSOR in the DATA LIST with the HDS.

Is there about 0.24 V or less?

YES - Go to step 9.

NO - Go to step 7.




7. Measure voltage between A/C pressure sensor 3P connector terminals No. 1 and No. 3.

Is there about 5 V?

YES - Go to step 13.

NO - Go to step 8.




8. Measure voltage between PCM connector terminals C12 and C13.

Is there about 5 V?

YES - Repair open in the wire between the PCM (C13) and the A/C pressure sensor, then go to step 15.

NO - Go to step 20.

9. Turn the ignition switch OFF.
10. Jump the SCS line with the HDS.
11. Disconnect PCM connector D(17P).




12. Check for continuity between A/C pressure sensor 3P connector terminal No. 2 and body ground.

Is there continuity?

YES - Repair short in the wire between the PCM (D17) and the A/C pressure sensor, then go to step 15.

NO - Go to step 20.

13. Turn the ignition switch OFF.
14. Replace the A/C pressure sensor.
15. Reconnect all connectors.
16. Turn the ignition switch ON (II).
17. Reset the PCM with the HDS.
18. Do the PCM idle learn procedure. Programming and Relearning
19. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P0532 is indicated, check for poor connections or loose terminals at the A/C pressure sensor and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.

20. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
21. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P0532 is indicated, check for poor connections or loose terminals at the A/C pressure sensor and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.