Internal Fault

Internal fault

Checking the control module








- Ignition on
- Gear selector in position P
- Activate solenoids S4 and S5 individually.
Read off the current in the circuit. The current should oscillate between 0 and approximately 1 A.





Does the current oscillate?

Yes - Fault-tracing information

No - Replacing the control module

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Replacing the control module
For further information and to replace the control module, see Replacing the transmission control module (TCM), AW55-50/51SN Service and Repair.





Continue - DONE

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Fault-tracing information
The control module has previously registered a fault.
No further fault-tracing is required.

Continue - DONE

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