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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 413 (Engine Controls - Self Diagnostics - 8.1L) >> Diagnostic Tests >> DTC P0230: Fuel Pump Control Relay Circuit >> Test Description

Test Description

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The numbers below refer to the step numbers in the diagnostic procedure.

  1. 2

    Listen for a click when the fuel pump relay operates. Command both the ON and OFF states. Repeat the commands as necessary.

  2. 4

    This step verifies that the PCM is providing voltage to the fuel pump relay.

  3. 5

    This step tests for an open in the ground circuit to the fuel pump relay.

  4. 6

    This step determines if voltage is constantly being applied to the control circuit of the fuel pump relay.

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