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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 378 (Engine Controls - System & Component Testing - 3.8L) >> Fuel Systems >> Fuel Injector Circuit Diagnosis (Regal) >> Test Description
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Test Description

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. 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 procedure.

  1. 4  - This step tests for a short to ground on the fuel injector ignition 1 voltage supply circuit.
  2. 5  - This step tests for an open ignition 1 voltage supply circuit between the injector fuse and a fuel injector harness connector.
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