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Table of Contents > DTC P0532: A/C Pressure Sensor Circuit Low Voltage

Honda CR-V Programmed Fuel Injection (PGM-FI) system ➜ DTC P0532: A/C Pressure Sensor Circuit Low Voltage

Does the HDS indicate PASSED, FAILED, EXECUTING, or OUT OF CONDITION?  
PASSED : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM  
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are  
indicated, go to the indicated DTC's troubleshooting.  
FAILED : Go to step 1 and recheck. If the PCM was updated, substitute a known-good PCM See PCM  
REMOVAL AND INSTALLATION or PCM UPDATE , then check the OBD STATUS again.  
EXECUTING : Keep the test condition until a result comes on.  
OUT OF CONDITION : Meet the test condition, and check the OBD STATUS again.  
DTC P0532: A/C PRESSURE SENSOR CIRCUIT LOW VOLTAGE  
Fig. 250: DTC Troubleshooting Flow Chart (P0532)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and  
review the general troubleshooting information See HOW TO TROUBLESHOOT  
THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS  
SYSTEMS .  
Confirmed  
DTC  
Pending  
DTC  
Freeze  
Frame  
DTC Description  
P0532 A/C PRESSURE SENSOR CIRCUIT LOW  
VOLTAGE  
1. Problem verification:  
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1. Start the engine, and let it idle.  
2. Turn the blower switch on.  
3. Turn the A/C switch on.  
4. Check the parameter(s) below with the HDS.  
Threshold  
Values  
Current conditions  
Unit Values Unit  
Signal  
A/C PRESSURE SENSOR Less than 0.24 V  
Do the current condition(s) match the threshold?  
YES : The failure is duplicated. Go to step 2.  
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 PCM.  
2. Determine possible failure area (PD SENSOR line, others):  
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1. Turn the ignition switch to LOCK (0).  
2. Disconnect the following connector.  
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A/C pressure sensor 3P connector  
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3. Turn the ignition switch to ON (II).  
4. Check the parameter(s) below with the HDS.  
Threshold  
Values  
Current conditions  
Unit Values Unit  
Signal  
A/C PRESSURE SENSOR Less than 0.24 V  
Do the current condition(s) match the threshold?  
YES : Go to step 5.  
NO : Go to step 3.  
3. Determine possible failure area (A/C pressure sensor, others):  
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1. Measure the voltage between test points 1 and 2.  
Test condition IG ON (II)  
A/C pressure sensor 3P connector: disconnected  
Test circuit VCC6, SG6  
Test point 1 A/C pressure sensor 3P connector No. 1 (GRY)  
Test point 2 A/C pressure sensor 3P connector No. 3 (RED)  
Fig. 251: Measuring Voltage Between A/C Pressure Sensor 3P Connector No. 1 (GRY) And  
No. 3 (RED)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there about 5.0 V?  
YES : REPLACE THE A/C PRESSURE SENSOR , then do the repair verification .  
NO : Go to step 4.  
4. Open wire check (VCC6 line):  
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1. Turn the ignition switch to LOCK (0).  
2. Jump the SCS line with the HDS.  
3. Disconnect the following connector. PCM connector A (49P)  
4. Check for continuity between test points 1 and 2.  
Test condition IG LOCK (0)  
A/C pressure sensor 3P connector: disconnected  
PCM connector A (49P): disconnected  
Test circuit VCC6  
Test point 1 PCM connector A (49P) No. 30 (RED)  
Test point 2 A/C pressure sensor 3P connector No. 3 (RED)  
Fig. 252: Checking Continuity Between PCM Connector A (49P) No. 30 (RED) And A/C  
Pressure Sensor 3P Connector No. 3 (RED)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : The VCC6 wire is OK. Update the PCM See PCM REMOVAL AND INSTALLATION or  
PCM UPDATE if it does not have the latest software, or substitute a known-good PCM See PCM  
REMOVAL AND INSTALLATION or PCM UPDATE , then do the repair verification .  
NO : Repair an open in the VCC6 wire between the PCM (A30) and the A/C pressure sensor, then do the  
repair verification .  
5. Shorted wire check (PD SENSOR line):  
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1. Turn the ignition switch to LOCK (0).  
2. Jump the SCS line with the HDS.  
3. Disconnect the following connector.  
PCM connector A (49P)  
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4. Check for continuity between test points 1 and 2.  
Test condition IG LOCK (0)  
A/C pressure sensor 3P connector: disconnected  
PCM connector A (49P): disconnected  
Test circuit PD SENSOR  
Test point 1 A/C pressure sensor 3P connector No. 2 (BLU)  
Test point 2 Body ground  
Fig. 253: Checking Continuity Between A/C Pressure Sensor 3P Connector No. 2 (BLU) And  
Body Ground  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : Repair a short in the PD SENSOR wire between the PCM (A27) and the A/C pressure sensor, then  
do the repair verification .  
NO : The PD SENSOR wire is OK. Update the PCM See PCM UPDATE or PCM REMOVAL AND  
INSTALLATION if it does not have the latest software, or substitute a known-good PCM See PCM  
REMOVAL AND INSTALLATION or PCM UPDATE , then do the repair verification .  
REPAIR VERIFICATION  
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1. Turn the ignition switch to LOCK (0).  
2. Reconnect all connectors.  
3. Turn the ignition switch to ON (II).  
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW  
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .  
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5. DO THE PCM IDLE LEARN PROCEDURE .  
6. Start the engine, and let it idle.  
7. Turn the blower switch on.  
8. Turn the A/C switch on.  
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9. Check for Pending or Confirmed DTCs with the HDS.  
Confirmed  
DTC  
Pending  
DTC  
Freeze  
Frame  
DTC Description  
P0532 A/C PRESSURE SENSOR CIRCUIT LOW  
VOLTAGE  
Is DTC P0532 indicated?  
YES : Check for poor connections or loose terminals at the A/C pressure sensor and the PCM. If the PCM was  
updated, substitute a known-good PCM See PCM UPDATE or PCM REMOVAL AND  
INSTALLATION , then recheck. If the PCM was substituted, go to step 1.  
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM  
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are  
indicated, go to the indicated DTC's troubleshooting.  
DTC P0533: A/C PRESSURE SENSOR CIRCUIT HIGH VOLTAGE