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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Diagnostic Information and Procedures >> DTC P0522 >> Test Description

Test Description

The number below refers to the step number 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 
Connector End View References: Instrument Panel, Gages, and Console Connector End Views , Powertrain Control Module (PCM) Connector End Views in Engine Controls - 4.3L or Powertrain Control Module (PCM) Connector End Views in Engine Controls - 4.8L, 5.3L, and 6.0L
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, observe the Engine Oil Pressure Sensor parameter in the powertrain control module (PCM) Engine Data 2 data list.
Does the Engine Oil Pressure Sensor parameter display less than the specified value?		 0.4 V Go to Step 3  Go to Diagnostic Aids
3 Is DTC P1635 for the 4.3L or DTC P0641 for the 4.8L, 5.3L, and 6.0L current in the PCM? - Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information Go to Step 4 
4 
  1. Turn OFF the ignition.
  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 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 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 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 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 the following:
Did you complete the replacement?		 - Go to Step 12  -
11 Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
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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