Description

The CAN signal containing the information on the engine friction torque is faulty.

Effects on the driving operation

Hard shifts

Possible causes

A CAN message required to determine the engine friction torque provides (a) faulty value(s).

Using the SAE J1939 CAN protocol:

CAN message EEC2 (Electronic Engine Controller #3): CAN signal 'nominal friction percent torque' faulty.

For information on the affected CAN message, please refer to the system description.

Connection of the engine load source CAN

Connector pin assignment of transmission control unit

Pin	Stecker A	Stecker B	Stecker C	Stecker D
1	SHIELD	EK	FLEXI-1	-BATT
2	TIM+	DK	---	IGN
3	TIM-	SK	FLEXI-3	FLEXI-11
4	N1+	RBK	FLEXI-4	K-LINE
5	N1-	TB	FLEXI-5	CAN1-H
6	N2+	---	FLEXI-6	CAN1-H
7	N2-	RBG	FLEXI-7	CAN-SHLD
8	N3+	PB	FLEXI-8	CAN1-L
9	N3-	WR	FLEXI-9	CAN1-L
10	---	WP	FLEXI-10	CAN2-H
11	---	---	FLEXO-2H	CAN2-H
12	EKM	FLEXI-12	FLEXO-4H	CAN2-L
13	DKM	S-GND	FLEXO-3H	CAN2-L
14	SKM	OIL-LVL	FLEXO-5L	CAN1-R
15	PBM	T-SUMP	---	---
16	TBM	---	---	FLEXO-1L
17	RBKM	T-CONV	---	CAN2-R
18	MVM-GND	MV-GND	---	+BATT

Place of action

No description available.

Instruction

Check the CAN message / CAN signal

and correct if necessary.

Setting conditions of the event

No description available.

Test conditions of the event

No description available.

Troubleshooting

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