A5300 SMG control module

Connector location views

Number	X-pin, color	Description
X53001	9-pin, blue	Plug connector SMG control module
X53003	52-pin, blue	Plug connector SMG control module
X53004	40-pin, blue	Plug connector SMG control module

Pin assignments at plug connector X53001

Pin	Type	Description / Signal type	Connection / Measuring notes
1	E	Terminal 15	Connector terminal 15

2		Not used

3	E/A	Diagnosis signal TXD	Digital motor electronics control unit

4		Not used

5	M	Ground	Ground connector

6	M	Ground	Ground connector

7	E	Terminal 30	Connector terminal 30

8	E	Terminal 30	Connector terminal 30

9		Not used

Pin assignments at plug connector X53003

Pin	Type	Description / Signal type	Connection / Measuring notes
1		Not used

2		Not used

3	E	Signal, selector lever position S2	Selector lever ASG

4	E	Signal, selector lever position S3	Selector lever ASG

5	E	Terminal R	Fuse F22

6	E	Signal, selector lever position R2	Selector lever ASG

7	E	Signal, selector lever position S1	Selector lever ASG

8	E	Signal, selector lever position S4	Selector lever ASG

9	E	Signal, selector lever position N1	Selector lever ASG

10	E	Signal, selector lever position R1	Selector lever ASG

11	E	Terminal R	Fuse F8

12	E	Signal, program button, up	Program button

13	A	Voltage supply Longitudinal acceleration sensor	Longitudinal acceleration sensor

14	E	Consumer cut-off signal	Connector Load cutout

15		Not used

16	E	Signal, program button, down	Program button

17		Not used

18	E	Signal Longitudinal acceleration sensor	Longitudinal acceleration sensor

19	E	Signal, selector lever position N2	Selector lever ASG

20	M	Ground Longitudinal acceleration sensor	Longitudinal acceleration sensor

21		Not used

22		Not used

23		Not used

24		Not used

25		Not used

26	E	Signal Solenoid valve Shift lock selector lever lock	Shift lock selector lever lock

27		Not used

28		Not used

29		Not used

30		Not used

31		Not used

32		Not used

33		Not used

34		Not used

35		Not used

36		Not used

37		Not used

38		Not used

39		Not used

40	E	Signal, steering wheel button, up	Steering wheel button, up

41	E	Signal, steering wheel button, down	Steering wheel button, down

42		Not used

43		Not used

44	E	Signal, hood switch, right	RH hood switch ASG

45	E	Signal, hood switch, left	LH hood switch ASG

46		Not used

47		Not used

48	E	Signal, gearshift position L2	Electronic immobilizer control unit

49	A	Engine speed signal (TD)	Connector Engine speed signal (TD)

50		Not used

51		Not used

52		Not used

Pin assignments at plug connector X53004

Pin	Type	Description / Signal type	Connection / Measuring notes
1		Not used

2	A	Voltage output +5V	Connector X8089

3	E	Signal, selection angle potentiometer 1	Gear position sensor

4	M	Ground	Ground connector

5	E	Signal, selection angle potentiometer 2	Gear position sensor

6	E	Signal, clutch sensor	Clutch position sensor, SMG

7	E	Signal, clutch sensor	Clutch position sensor, SMG

8	E	Signal, clutch position	Clutch position sensor, SMG

9	E	Signal, clutch position	Clutch position sensor, SMG

10	M	Negative activation Solenoid valve, shift path, back	Hydraulic unit SMG

11	E	Signal Transmission rpm sensor	Transmission rpm sensor

12	E	Signal, pressure sensor for hydraulic unit	Hydraulic unit SMG

13	E	Signal Transmission fluid temperature sensor	Transmission fluid temperature sensor

14	E	Signal, selection angle potentiometer 1	Gear position sensor

15	E	Signal, selection angle potentiometer 2	Gear position sensor

16	A	Activation Relay, hydraulic pump	Relay, hydraulic pump

17		Not used

18	M	Sensor ground, clutch position	Clutch position sensor, SMG

19		Not used

20	M	Negative activation Solenoid valve, shift path, forward	Hydraulic unit SMG

21	E	Signal, hydraulic temperature	Hydraulic unit SMG

22		Not used

23	M	Sensor ground, clutch position	Clutch position sensor, SMG

24		Not used

25		Not used

26	A/E	CAN bus high	SMG control module

27	A/E	CAN bus low	SMG control module

28	M	Negative activation Solenoid valve, clutch	Hydraulic unit SMG

29	A	Positive activation Solenoid valve, shift path, back	Hydraulic unit SMG

30	A	Positive activation Solenoid valve, clutch	Hydraulic unit SMG

31	M	Sensor ground	Ground connector

32		Not used

33		Not used

34	A	Voltage output +5V	Gear position sensor

35		Not used

36	A/E	CAN bus high	Digital motor electronics control unit

37	A/E	CAN bus low	Digital motor electronics control unit

38	M	Negative activation Solenoid valve, selection angle	Hydraulic unit SMG

39	A	Positive activation Solenoid valve, shift path, forward	Hydraulic unit SMG

40	A	Positive activation Solenoid valve, selection angle	Hydraulic unit SMG