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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1516 (Instrument Panel System Displays, Gauges And Console) >> Diagnostic Information and Procedures >> DTC P0522 >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 4:  This step tests for the proper operation of the circuit in the high voltage range.
DTC P0522

Step Action Values Yes No
Schematic Reference:  Instrument Cluster Schematics  
1 Did you perform the Instrument Cluster Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - Instrument Cluster 
2
  1. Install a scan tool.
  2. Turn the ignition ON, with the engine OFF.
  3. With the scan tool, observe the Engine Oil Pressure Sensor parameter in the PCM Engine Data 3 data list.
Does the Engine Oil Pressure Sensor parameter display less than the specified value?		 0.48 V Go to Step 3  Go to Diagnostic Aids
3 Is DTC P0641 current in the PCM? - Go to DTC P0641 in Engine Controls Go to Step 4 
4 
  1. Turn the ignition OFF.
  2. Disconnect the engine oil pressure (EOP) sensor.
  3. Connect a 3-ampere fused jumper between the EOP sensor signal circuit and the 5 volt reference circuit of the EOP sensor.
  4. With the scan tool, observe the Engine Oil Pressure Sensor parameter.
Does the Engine Oil Pressure Sensor parameter display greater than the specified value?		 4.6 V Go to Step 8  Go to Step 5 
5
  1. Disconnect the fused jumper.
  2. Measure the voltage between the 5 volt reference circuit of the EOP sensor and the low reference circuit of the EOP sensor.
Does the voltage measure greater than the specified value?		 4.6 V Go to Step 7  Go to Step 6 
6 Test the 5 volt reference circuit of the EOP sensor for an open or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 9 
7 Test the EOP sensor signal circuit for an open, for a short to ground, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 9 
8 Inspect for poor connections at the harness connector of the EOP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 10 
9 Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 11 
10 Replace the EOP sensor. Refer to Engine Oil Pressure Sensor and/or Switch Replacement in Engine Mechanical.
Did you complete the replacement?		 - Go to Step 12  -
11
IMPORTANT: Program the replacement PCM.
Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls.Did you complete the replacement?		 - Go to Step 12  -
12
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC.
Does the DTC reset?		 - Go to Step 2  System OK
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