A4 V6-3.0L (AVK) (2004)
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Disconnect voltage supply relay -2-.
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Perform the following tests marked with dots:
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Check wire connection from relay carrier in E-box, plenum chamber, position 2, terminal 8 to harness connector at ignition coil terminal 1.
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Check Motronic Engine Control Module (ECM) power supply relay -J271-. See: Computers and Control Systems/Main Relay (Computer/Fuel
System)/Testing and Inspection
Checking activation of power output stages
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Harness connector at ignition coils disconnected
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Remove all harness connectors to injectors.
NOTE: Fuel must not be injected during the test to avoid damaging catalytic converter. Connectors must therefore be disconnected from fuel injectors.
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Connect e.g. V.A.G 1527 B voltage tester to connector terminals 2 and 3.
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Operate starter briefly.
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LED must blink (brief blink signal).
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Switch ignition off.
If LED does not blink:
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Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Text Box, Connecting For Wiring
Test
