Description

Faulty message priority of brake request

Effects on the driving operation

The requested brake torque of the defective source is not taken into account.

Thus the retarder may not be activated.

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.

Test conditions of the event

No description available.

Troubleshooting

1. Test CAN signal.
2. Contact the manufacturer of the sending control unit.

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 the function.

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

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

These steps are necessary to ensure the entire vehicle functions.

See also:

		CAN SAE J1939 Voith specifics (SW E300-D2.3.0.0)
		CAN SAE J1939 Voith specifics (SW E300-D2.4.0.0)
		CAN SAE J1939 Voith specifics (SW E300.1-D5.0.0.0)
		Aftersales service index