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Home >> Audi >> 2003 >> RS 6 >> Repair and Diagnosis >> Engine Performance >> System >> Ignition System - 4.2L V8 5V BCY >> Ignition System >> Ignition system, checking >> Motronic Engine Control Module (ECM) power supply relay -J271-, checking >> Notes

Motronic Engine Control Module (ECM) power supply relay -J271-, checking: Notes

NOTE: The Motronic ECM power supply relay -J271- powers the ignition coils with output stages and the engine control module at pin 3 as well as certain other components. With the ignition on, 12 V must be applied to contact 1 of the relevant ignition coil connector.