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Home › Audi › 2006 › A4 Base, 2D Convertible › Repair and Diagnosis › Engine Performance › System › 1.8L - Ignition System, Engine Code(S): AMB › Ignition System › Ignition system, checking › Motronic Engine Control Module (ECM) power supply, checking › Test requirements:

Test requirements:

  1. Fuses for engine electronics OK

    See appropriate System Wiring Diagrams article.

  2. Battery voltage at least 12.7 V
  3. Alternator OK
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