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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0351 - P26C8) And Symptoms) >> Diagnostic Information And Procedures >> Fuel Injector Diagnosis >> Fuel Injector Coil Test

Fuel Injector Coil Test

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • The resistance test must be performed at the fuel injector or mis-diagnosis will occur.
  • The DMM and test leads must be calibrated to 0 Ω in order to prevent mis-diagnosis.
  1. Disconnect the appropriate Q17 Fuel Injector.
  2. Test for 1.3 - 1.44 Ω at 20°C (68°F) between the control + circuit terminal 2 and the control - circuit terminal 1 at the Q17 Fuel Injector.
    • If not between 1.3 - 1.44 Ω 

      Replace the Q17 Fuel Injector.

    • Go to next step: If between 1.3 - 1.44 Ω 
  3. Test for infinite resistance between each terminal at the Q17 Fuel Injector and the Q17 Fuel Injector housing/case.
    • If less than infinite resistance 

      Replace the Q17 Fuel Injector.

    • Go to next step: If infinite resistance 
  4. All OK. Perform the Fuel Injector Balance Test.
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