Beetle L4-2.0L (AEG) (2000)
If specification not obtained or display does not change
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Connect VAG 1598/22 Test Box to ECM wiring harness.
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Check wiring for open circuit between Test Box sockets 29 and 41 and TCM using Wiring diagram. (dia. 1999)
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Check wiring for open circuit between Test Box sockets 29 and 42 and TCM using Wiring diagram. (2000 dia.)
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Wire resistance: 1.5 Ohms maximum
If wiring OK:
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Replace TCM.
If malfunction occurs again after replacing TCM
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Replace ECM.