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Home >> Cadillac >> 2003 >> DeVille DTS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Ignition Systems >> Electronic Ignition System Diagnosis >> Test Description
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Test Description

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

  1. 3

    This step tests for a short to battery positive voltage on the ignition 1 voltage circuit. When the ignition is turned OFF, the test light should not illuminate at the COIL/MDL fuse.

  2. 18

    The Spark Tester places a higher load, up to 25,000 volts, on the secondary ignition than a normal spark plug.
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