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.

NOTE: Battery should be fully charged prior to any tests.

The numbers below refer to step numbers in diagnostic procedure.

3

This step checks for proper spark output. Spark test requires a minimum of 25,000 volts to operate. This check can be used in case of an ignition miss, because system may provide enough voltage to run engine but not enough to operate a spark plug under heavy load.

4

This test separates distributor cap, rotor, and ignition wires from ignition coil in order to help identify a secondary ignition system problem.

6

This test checks Ignition Control Module (ICM), connections and wiring.

12

This test begins to determine if PCM is providing a signal to ICM. If PCM is not providing a signal to ICM, problem exists between ICM and PCM.

14

This test checks for a basic engine mechanical problem.