Description

Faulty message priority of brake request.

Effects on the driving operation

No retarder operation.

Possible causes

The priority of the message of a brake request is faulty.

The source causing the fault can be found in the system description

Place of action

No description available.

Instruction

Check the CAN-message and contact the manufacturer of the transmitting control unit if necessary.

(With SAE J1939: TSC1(Torque/ Speed Controller #1), 'override control mode priority' ).

Setting conditions of the event

No description available.

Testing conditions of the event

No description available.

Final function check

If the defective component cannot be clearly identified, you should try to reproduce the fault:

• Reinstall the component in the vehicle.
• Test function.

After the fault has been eliminated, the following steps have to be carried out:

• Conduct a test drive with function check.
• Read the fault memory
• Check transmission for leaks.
• Perform a final visual inspection.

These steps are necessary to ensure the entire vehicle functions correctly.