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Circuit/System Testing

  1. Ignition ON, engine ON, verify the scan tool Engine Oil Pressure Switch parameter is Low.
    • If not Low, replace the instrument panel cluster (IPC).
  2. Ignition OFF, disconnect the harness connector at the EOP switch.
  3. Ignition ON, verify the scan tool Engine Oil Pressure Switch parameter is OK.
    • If not OK, test the signal circuit of the EOP switch for a short to ground. If the circuit tests normal, replace the ECM.
  4. If all circuits test normal, test or replace the EOP sensor.
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