LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 101 (Engine Control System Self-Diagnostics - 3.4L) >> Diagnostic Tests >> DTC P0230: Fuel Pump Primary Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2

    Listen for an audible 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 tests if voltage is constantly being applied to the control circuit of the fuel pump relay.
scientia non olet · About LEMON Manuals