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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 >> Low Engine Oil Level Indicator Always On >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector of the engine oil level switch.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit and ground.
    • If greater than 1.0 ohm, test the ground circuit for an open/high resistance.
  3. Install a 3-amp fused jumper wire between the signal circuit and ground. Verify the scan tool Engine Oil Level Switch parameter is OK.
    • If not OK, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  4. If all circuits test normal, test or replace the engine oil level switch.
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