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Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (HVAC System - Manual) >> Diagnostic Information and Procedures >> DTC P0532 or P0533 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
Step Action Values Yes No
Schematic Reference:  HVAC Schematics (Notchback)   or  HVAC Schematics (Hatchback)  
Connector End View Reference:  HVAC Connector End Views  
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the A/C High Side Pressure parameter with a scan tool.
Is the pressure within the specified range?		 0.09-4.90 V Go to Step 3  Go to Step 4 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 4  Go to Diagnostic Aids
4
  1. Turn OFF the ignition.
  2. Disconnect the A/C refrigerant pressure sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the A/C High Side Pressure parameter with a scan tool.
Is the pressure less than the specified value?		 0.09 V Go to Step 5  Go to Step 11 
5
  1. Turn OFF the ignition.
  2. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the A/C refrigerant pressure sensor and the signal circuit of the A/C refrigerant pressure sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the A/C High Side Pressure parameter with a scan tool.
Is the pressure more than the specified value?		 4.90 V Go to Step 6  Go to Step 9 
6
  1. Disconnect the fused jumper wire.
  2. Measure the voltage between the 5-volt reference circuit of the A/C refrigerant pressure sensor and the low reference circuit of the A/C refrigerant pressure sensor with a DMM.
Is the voltage more than the specified value?		 5.2 V Go to Step 8  Go to Step 7 
7
  1. Turn OFF the ignition.
  2. Measure the resistance between the low reference circuit of the A/C refrigerant pressure sensor and the engine control module (ECM) housing with a DMM.
Is the resistance less than the specified value?		 2 Ω Go to Step 13  Go to Step 12 
8
IMPORTANT: The 5-volt reference circuits are internally and externally connected at the controller. Other sensors that share the 5-volt reference circuit may also have DTCs set. Disconnecting a sensor on the shared 5-volt reference circuit may isolate a shorted sensor. Review the electrical schematic and diagnose the shared circuits and sensors.
Test the 5-volt reference circuit of the A/C refrigerant pressure sensor for a short to voltage. Refer to Circuit Testing and Wiring Repairs .Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
9
IMPORTANT: The 5-volt reference circuits are internally and externally connected at the controller. Other sensors that share the 5-volt reference circuit may also have DTCs set. Disconnecting a sensor on the shared 5-volt reference circuit may isolate a shorted sensor. Review the electrical schematic and diagnose the shared circuits and sensors.
Test the 5-volt reference circuit of the A/C refrigerant pressure sensor for the following conditions:
  • An open
  • A high resistance
  • A short to ground
Refer to Circuit Testing and Wiring Repairs .Did you find and correct the condition?		 - Go to Step 17  Go to Step 10 
10 Test the signal circuit of the A/C refrigerant pressure sensor for the following conditions:
  • An open
  • A high resistance
  • A short to ground

Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
11 Test the signal circuit of the A/C refrigerant pressure sensor for a short to voltage. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
12 Test the low reference circuit of the A/C refrigerant pressure sensor for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
13 Test for an intermittent and for a poor connection at the A/C refrigerant pressure sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 15 
14 Test for an intermittent and for a poor connection at the ECM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 16 
15 Replace the A/C refrigerant pressure sensor. Refer to Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement .
Did you complete the replacement?		 - Go to Step 17  -
16 Replace the ECM.
Did you complete the replacement?		 - Go to Step 17  -
17
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 18 
18 Observe the capture info with a scan tool.
Are there any DTCs that have not been diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle System OK
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