Description

The operating coil is inadmissibly energised while switched off.

Effects on the driving operation

Driving is not possible.

Automatic shift into neutral.

Possible causes

The output transistor autonomously generates voltage in the operating coil circuit due to an internal fault.

Connection of the solenoid valve

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

Pin assignment of transmission connector

Pin	Name	Pin	Name	Pin	Name
1	S-GND	14	RBK	27	EKM
2	MV-GND	15	RBG	28	PBM
3	MV-GND	16	TB	29	RBKM
4	---	17	WR	30	TBM
5	T-CONV	18	---	31	MVM-GND
6	T-SUMP	19	---	32	N1+
7	OIL-LVL	20	---	33	N1-
8	P-DIFF	21	TIM-	34	N2+
9	SK	22	TIM+	35	N2-
10	DK	23	---	36	N3+
11	EK	24	SHIELD	37	N3-
12	PB	25	SKM
13	WP	26	DKM

Internal cable harness

Installation point of the solenoid valve

Place of action

Transmission control unit

Instruction

Replace transmission control unit.

Setting conditions of the event

No description available.

Test conditions of the event

No description available.

Connector switched solenoid valve

Troubleshooting

Replace the transmission 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:

		Aftersales service index