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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Ignition System >> Ignition Relay Diagnosis (4.3L) >> Circuit Description
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Circuit Description

Ignition relay supplies ignition voltage to fuel injectors, ignition coils, Powertrain Control Module (PCM) and alternator/generator.

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