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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (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 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. 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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