TT L4-1.8L Turbo (BEA) (2004)
/Page-1869004.png)
The DTCs stored in the DTC memory indicates the control module 1 does not communicate with control modules 2 and 3.
Control module
DTCs stored 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 control modules connected across bus wires and check bus wires for an open circuit.
-
Replace control module 1 if no malfunctions can be found in bus wires.
Example 2:
From the DTCs stored in memories, you have determined that control module 2 is not communicating with control modules 1 and 3.
Control module
DTCs stored in DTC memory
1
-
No message from control module 2
-
No message from control module 1
2
-
No message from control module 3
3
-
No message from control module 2
-
Switch ignition off.
-
Disconnect control modules connected across bus wires and check bus wires for an open circuit.
-
Replace control module 2 if no malfunctions can be found in bus wires.
Example 3:
Using the DTCs stored in the memories, you have determined that none of the control modules are sending or receiving signals.
Control module
DTCs stored in DTC memory
1
-
Powertrain data bus malfunction
2
-
Powertrain data bus malfunction
3
-
Powertrain data bus malfunction
-
Switch ignition off.
