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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Engine Controls - System & Component Testing) >> Ignition System >> Ignition Relay Diagnosis (3.4L) >> Test Description
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Test Description

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to step numbers in diagnostic procedure.

  1. 2

    This step is testing battery positive voltage circuit of ignition relay.
  2. 3

    This step is testing Ignition 1 positive voltage circuit of ignition relay.
  3. 4

    This step is testing coil ground circuit of ignition relay.
  4. 5

    This step isolates circuits from ignition relay. All circuits at relay are good if test light illuminates.