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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0522 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the engine oil pressure (EOP) sensor.
  2. Ignition ON, test for 4.8 - 5.2 volts between the 5-volt reference circuit and ground.
    • If less than 4.8 volts, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the engine control module (ECM).
  3. Install a 3-Amp fused jumper wire between the signal circuit and the 5-volt reference circuit. Verify the scan tool Engine Oil Pressure Sensor parameter is greater than 4.8 volts.
    • If less than 4.8 volts, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
  4. If all circuits test normal, test or replace the EOP sensor.
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