A8L Quattro Sedan V8-4.2L (AKB) (2002)
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From the malfunctions present in the DTC memories, you can see that control module 1 has no connection to control modules 2 or 3.
Control module Malfunctions present in DTC memory:
1
No message from control module 2
No message from control module 3
2
No message from control module 1
3
No message from control module 1
-
Switch ignition off.
-
Disconnect the control modules which are linked by the bus wires and check whether there is an open circuit in one of the bus wires
-
If no malfunction can be identified in the bus wires replace control module 1.
Example 2
From the malfunctions present in the DTC memories, you can see that control module 2 has no connection to control modules 1 or 3.
Control module Malfunctions present in DTC memory:
1
No message from control module 2
2
No message from control module 1
No message from control module 3
3
No message from control module 2
-
Switch ignition off.
-
Disconnect the control modules which are linked by the bus wires and check whether there is an open circuit in one of the bus wires
-
If no malfunction can be identified in the bus wires replace control module 2.
Example 3
From the malfunctions present in the DTC memories, you can see that none of the control modules are able to transmit or receive signals.
