A6 V6-3.0L (AVK) (2004)
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From the DTC's stored in the memories, you have determined that control module 1 is not communicating with control modules 2 and 3.
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Switch ignition off.
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Disconnect the control modules connected across the bus wires and check the bus wires for an open circuit
=> Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
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Replace control module 1 if no malfunctions can be found in the bus wires.
Example 2:
From the DTC's stored in the memories, you have determined that control module 2 is not communicating with control modules 1 and 3.
^
Switch ignition off.
^
Disconnect the control modules connected across the bus wires and check the bus wires for an open circuit
=> Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
^
Replace control module 2 if no malfunctions can be found in the bus wires.
Example 3:
