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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> Fuel Heater Diagnosis >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition On.
  2. Command the Fuel Heater Relay On and Off with a scan tool. Verify that you hear or feel the KR22 Fuel Heater Relay click.
    • Go to next step: If a click is heard or felt 
  3. Verify with a scan tool that the Fuel Temperature Sensor parameter slowly starts to rise when the fuel heater relay is commanded On.
    • If the fuel temperature does not start to rise 

      Refer to Circuit/System Testing

    • Go to next step: If the fuel temperature rises 
  4. All OK
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