A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
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Main Relay (Computer/Fuel System): Testing and Inspection
Motronic Engine Control Module (ECM) Power Supply Relay -J271-, Checking
Special tools and equipment
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VAG1526 A
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VAG1594 A
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VAG1598/31
NOTE: The Motronic engine control module (ECM) power supply relay -J271- supplies the ignition coils with output stages as well as the engine
control module on Pin 121 with power.
Test sequence
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Disconnect cover -1- on left in engine compartment.
