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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> Fuel Injector Diagnosis >> Fuel Injector Coil Test

Fuel Injector Coil Test

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
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. Remove the intake manifold and disconnect the appropriate Q17 Fuel Injector.
  2. Test for 1. 06 Ω +/- 10% at 20°C (68°F) between the high voltage supply circuit terminal 2 and the high voltage control circuit terminal 1 at the Q17 Fuel Injector.
    • If not within the specified range 

      Replace the Q17 Fuel Injector.

    • Go to next step: If within the specified range 
  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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