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Home >> Chevrolet >> 2014 >> Camaro LS, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Engine Oil Temperature Gauge Malfunction >> Circuit/System Testing

Circuit/System Testing

NOTE:

Circuit/System Verification must be performed before proceeding with Circuit/System Testing.

  1. Ignition ON, perform the Auxiliary Gauge Sweep test with the scan tool, verify that the engine oil temperature gauge sweeps from its low to high position.
    • If the engine oil pressure gauge does not sweep 

      Replace the P26 Auxiliary Gauge Module.

    • If the engine oil temperature gauge does sweep 
  2. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B35C Engine Oil Level and Temperature Sensor. It may take up to 2 minutes for all vehicle systems to power down.
  3. Test for less than 10 ohms between the low reference circuit terminal C and ground.
    • If 10 ohms or greater 
    1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
    2. Test for less than 2 ohms in the low reference circuit end to end.
      • If 2 ohms or greater, repair the open/high resistance in the circuit.
      • If less than 2 ohms, replace the K20 Engine Control Module.
    • If less than 10 ohms 
  4. Ignition ON.
  5. Verify the scan tool Engine Oil Temperature Sensor parameter is warmer than 148°C (298°F).
    • If 148°C (298°F) or less 
    1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
    2. Test for infinite resistance between the signal circuit terminal B and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K20 Engine Control Module.
    • If warmer than 148°C (298°F) 
  6. Install a 3A fused jumper between the signal circuit terminal B and the low reference circuit terminal C.
  7. Verify the scan tool Engine Oil Temperature Sensor parameter is colder than -38°C (-36°F).
    • If -38°C (-36°F) or colder 
    1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
    2. Test for less than 1V between the signal circuit and ground.
      • If 1V or greater, repair the short to voltage on the circuit.
      • If less than 1V
    3. Ignition OFF.
    4. Test for less than 2 ohms in the signal circuit end to end.
      • If 2 ohms or greater, repair the open/high resistance in the circuit.
      • If less than 2 ohms, replace the K20 Engine Control Module.
    • If warmer than -38°C (-36°F) 
  8. Test or replace the B35C Engine Oil and Temperature Sensor.
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