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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0089, P00C6, P228C, P228D, or P2C1E-P2C20 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
    NOTE:

    As little as 2 ohms of resistance in a circuit may cause a DTC to set.

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: G18 High Pressure Fuel Pump
  3. Test for 1.1 to 1.9 ohms between the test points: Control terminal 1 & Control terminal 2
    • If not between 1.1 and 1.9 ohms 

      Replace the component: G18 High Pressure Fuel Pump

    • Go to next step: If between 1.1 and 1.9 ohms 
  4. 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: G18 High Pressure Fuel Pump

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