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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 95 (Instrument Panel System Displays, Gauges And Console) >> Diagnostic Information and Procedures >> DTC P0522 (3.6L Ly7) >> Test Description

Test Description

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 3:  This step tests for the proper operation of the circuit in the high voltage range.
DTC P0522 (3.6L LY7)

Step Action Values Yes No
Schematic Reference: Instrument Cluster Schematics 
Connector End View Reference: Engine Control Module (ECM) Connector End Views in Engine Controls - 3.6L or Inline Harness Connector End Views
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 engine control module (ECM) instrument panel cluster (IPC) Data list.
Does the Engine Oil Pressure Sensor parameter display less than the specified value?		 8 kPa (1.16 psi) Go to Step 3  Go to Diagnostic Aids
3 
  1. Turn OFF the ignition.
  2. Disconnect the engine oil pressure (EOP) sensor.
  3. Connect a 3-amp 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 at or above the specified value?		 880 kPa (127.63 psi) Go to Step 7  Go to Step 4 
4
  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?		 4.7 V Go to Step 6  Go to Step 5 
5 Test the 5-volt reference circuit of the EOP sensor for the following:
  • An open
  • A short to ground
  • High resistance

Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 11  Go to Step 8 
6 Test the EOP sensor signal circuit for the following:
  • An open
  • A short to ground
  • High resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 11  Go to Step 8 
7 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 11  Go to Step 9 
8 Inspect for poor connections at the harness connector of the engine control module (ECM). 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 11  Go to Step 10 
9 Replace the EOP sensor. Refer to Engine Oil Pressure Sensor and/or Switch Replacement in Engine Mechanical - 3.6L.
Did you complete the replacement?		 - Go to Step 10  -
10 Replace the ECM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.
Did you complete the replacement?		 - Go to Step 11  -
11
  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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