A6 Sedan V6-3.2L (BKH) (2007)
Main Relay (Computer/Fuel System): Testing and Inspection
Engine Control Module Power Supply Relay, Checking
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
‹› The Engine Control Module (ECM) Power Supply Relay (J363) supplies voltage to the ignition coils with power output stages and a few
additional components. With the ignition switched on, 12 V must be present at the respective ignition coil connector, terminal 1.
Test requirement
‹› Fuses SA14, SA15 and SA18 OK.
‹› Battery voltage at least 12.5 V.
‹› The Ground (GND) connections at the engine and transmission OK.
‹› The generator OK.
‹› The ignition is switched off.
Test procedure
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Perform a preliminary check to verify the customer's complaint. Refer to => [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check.
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Remove the rubber seal - 1 - from the plenum chamber cover.
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Remove the plenum chamber cover - 2 -.