Internal Fault

Internal fault

Checking shift solenoids




- Start the engine.
- Gear selector in position P.
- Read off the current through the line pressure solenoid STH.
- Depress the accelerator pedal (AP) slowly.
The current should decrease as the accelerator pedal (AP) is depressed.
If current does not decrease, it indicates that there is an internal fault in the transmission control module (TCM).





Does the current decrease?

Yes - No Fault Found

No - Transmission control module (TCM) replacement and programming

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Transmission control module (TCM) replacement and programming
The control module has registered an internal fault.

Caution! A new control module is delivered without software. The control module must be programmed in order to function after replacement.

Other information:
- Transmission control module (TCM), replacing, B5254T2, AW50/51 AWD, B5254T2, AW55-50/51SN Service and Repair





Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.

Do you want to view the information again?

Yes - Attempt New Test

No - Exit fault-tracing

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Attempt New Test - Checking shift solenoids

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