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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0010 - P034B)) >> Diagnostic Information And Procedures >> DTC P0117, P0118, Or P0119: Engine Coolant Temperature Sensor >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector:B34 Engine Coolant Temperature Sensor
  3. Test for 42 to 78, 834 ohms between the test points:Signal terminal 1A & Low Reference terminal 2B
    • If not between 42 and 78, 834 ohms 

      Replace the component:B34 Engine Coolant Temperature Sensor

    • Go to next step: If between 42 and 78, 834 ohms 
  4. Verify the value is within the range listed in the table:Temperature Versus Resistance - Engine Coolant Temperature Sensor
    • If not in the specified range 

      Replace the component:B34 Engine Coolant Temperature Sensor

    • Go to next step: If in the specified range 
  5. Test for infinite resistance between the test points:Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component:B34 Engine Coolant Temperature Sensor

    • Go to next step: If infinite resistance 
  6. All OK.
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