MS45 Pinout

NOTE! Work ongoing!!

Pinout available as PDF here: https://www.ms4x.net/index.php?title=File:MS45.X_Pinout_v1.0.pdf

Note: Some pins differ between M54 and M56. And also between MS45.0 and MS45.1

X60001 - Voltage Supply

X60001 9-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Input	U_15	0.5 GN	Relay, fuel injectors
2
3	I/O	D_TXD2	0.5 WS/VI	Diagnostic Link TXD	K-Line - Transmission Control Unit
4	Ground	31E	1.5 BR/OR	Ground	Terminal 31 support, E-box
5	Ground	31L	1.5 BR	Ground	Ground Connector
6	Ground	31L	1.5 BR	Ground	Ground Connector
7	Input	30H<102	1.5 RT	Voltage Supply Terminal 30	B+ Potential Distributor
8	Input	U_HR<2	1.0 RT/WS/GE	Voltage Supply Terminal 87	Fuse Carrier Engine Electronics
9

X60002 - Peripherals

X60002 24-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Output	T_LHV1	0.5 GN	Negative activation, oxygen sensor heating	Oxygen sensor 1 before catalytic converter
2	Output	T_LHV2	0.5 GN	Negative activation, oxygen sensor heating	Oxygen sensor 2 before catalytic converter
3	I/O	D_CAN_L	0.5 GE/BR	Gearbox CAN-Low	Transmission Control Unit (AT/SMG only)
4	I/O	D_CAN_H	0.5 GE/SW	Gearbox CAN-High	Transmission Control Unit (AT/SMG only)
5
6	Output	T_LHH1	0.5 BR	Negative activation, oxygen sensor heating	Oxygen sensor 1 after catalytic converter
7	Input	M_LSV1	0.5 SW	Negative signal, oxygen sensor	Oxygen sensor 1 before catalytic converter
8	Input	M_LSH2	0.5 SW	Negative signal, oxygen sensor	Oxygen sensor 2 after catalytic converter
9	Input	M_LSV2	0.5 SW	Negative signal, oxygen sensor	Oxygen sensor 2 before catalytic converter
10	Input	M_LSH1	0.5 SW	Negative signal, oxygen sensor	Oxygen sensor 1 after catalytic converter
11
12	Output	T_LHH2	0.5 BR	Negative activation, oxygen sensor heating	Oxygen sensor 2 after catalytic converter
13	Input	I_LSVP1	0.5 BL	Signal, oxygen sensor	Oxygen sensor 1 before catalytic converter, only with MS45.1
14	Input	A_LSH2	0.5 GE	Signal, oxygen sensor	Oxygen sensor 2 after catalytic converter
15	Input	I_LSVP2	0.5 BL	Signal, oxygen sensor	Oxygen sensor 2 before catalytic converter, only with MS45.1
16	Input	A_LSH1	0.5 GE	Signal, oxygen sensor	Oxygen sensor 1 after catalytic converter
17
18
19	Output	A_LSVP1	0.5 OR	Signal, oxygen sensor	Oxygen sensor 1 before catalytic converter, only with MS45.1
20	Ground	A_LSVR1	0.5 GE	Signal, oxygen sensor	Oxygen sensor 1 before catalytic converter
21	Ground	A_LSVP2	0.5 OR	Signal, oxygen sensor	Oxygen sensor 2 before catalytic converter, only with MS45.1
22	Ground	A_LSVR2	0.5 GE	Signal, oxygen sensor	Oxygen sensor 2 before catalytic converter
23	Output	S_HR	0.5 BR/SW	ECU Main Relay Control	ECU Main Relay
24

X60003 - Engine

X60003 52-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Input			[0-5V] Signal Hot Film Mass Air Flow Sensor	Hot Film Mass Air Flow Sensor
2	Input			Signal Exhaust Camshaft Sensor	Exhaust Camshaft Sensor
3	Output			Spare Output 1	Never Used In Production
4
5	Input			Signal Intake Camshaft Sensor	Intake Camshaft Sensor
6
7	Output			[+5V] Voltage Supply Electric Throttle Body	Electric Throttle Body
8	Input			Signal Crankshaft Sensor	Crankshaft Sensor
9
10	Input			[0-5V] Signal Electric Throttle Body Potentiometer 2	Electric Throttle Body
11	Output			Spare Output 3	Never Used In Production
12
13
14
15	Ground			Exhaust Camshaft Sensor	Exhaust Camshaft Sensor
16
17	Ground			Hot Film Mass Air Flow Sensor	Hot Film Mass Air Flow Sensor
18	Ground			Intake Camshaft Sensor	Intake Camshaft Sensor
19	Input			[0-5V] Signal Electric Throttle Body Potentiometer 1	Electric Throttle Body
20	Ground			Electric Throttle Body	Electric Throttle Body
21	Input			Ground Crankshaft sensor	Crankshaft sensor
22	Output			[0-5V] Signal Intake Air Temperature	Intake Air Temperature Sensor
23	Ground			Intake Air Temperature	Intake Air Temperature Sensor
24	Output			[0-5V] Signal Coolant Temperature	Coolant Temperature Sensor
25	Ground			Coolant Temperature	Coolant Temperature Sensor
26
27	Output			[0-5V] Signal Engine Oil Temperature	Oil Temperature Sensor
28	Ground			Engine Oil Temperature	Oil Temperature Sensor
29	Input			Signal Knock Sensor 1A	Knock Sensor Cylinder 1-3
30	Input			Signal Knock Sensor 1B	Knock Sensor Cylinder 1-3
31	Input			Signal Knock Sensor 2A	Knock Sensor Cylinder 4-6
32	Input			Signal Knock Sensor 2B	Knock Sensor Cylinder 4-6
33	Output			[0/1] Signal Fuel Injector Cylinder 1	Fuel Injector Cylinder 1 Y6101 Pin 1
34	Output			[0/1] Signal Fuel Injector Cylinder 2	Fuel Injector Cylinder 2 Y6102 Pin 1
35	Output			[0/1] Signal Fuel Injector Cylinder 3	Fuel Injector Cylinder 3 Y6103 Pin 1
36	Output			[0/1] Signal Fuel Injector Cylinder 4	Fuel Injector Cylinder 4 Y6104 Pin 1
37	Output			[0/1] Signal Fuel Injector Cylinder 5	Fuel Injector Cylinder 5 Y6105 Pin 1
38	Output			[0/1] Signal Fuel Injector Cylinder 6	Fuel Injector Cylinder 6 Y6106 Pin 1
39
40	Output			[PWM] Signal VANOS Intake Solenoid	VANOS Intake Solenoid
41	Output			[PWM] Signal VANOS Exhaust Solenoid	VANOS Exhaust Solenoid
42	Output			[PWM] Signal Fuel Tank Vent Valve	Fuel Tank Vent Valve
43	Output			[H-Bridge] Electric Throttle Body Actuator 1	Electric Throttle Body
44	Output			[H-Bridge] Electric Throttle Body Actuator 2	Electric Throttle Body
45	Output			[0/1] Characteristic Map Cooling Thermostat	Thermostat
46	Output			[H-Bridge] Idle Speed Actuator Closing Coil	Idle Speed Actuator
47	Output			[H-Bridge] Idle Speed Actuator Opening Coil	Idle Speed Actuator
48	Ground			Shield Knock Sensors	Knock Sensors
49	Output			[0/1] Variable Intake Manifold Flap (VIM/DISA)	Variable Intake Manifold Flap (VIM/DISA)
50
51	Output			[PWM] DMTL Heater	Diagnostic Module Fuel Tank Leakage (With Heater)
52	Output			[0/1] Signal Secondary Air Pump Valve	Secondary Air Pump Valve

X60004 - Vehicle

X60004 40-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1
2	Output	S_DMTLH	0.75 SW/RT	Activation, fuel tank leakage, heating	Diagnostic module, fuel tank leakage, only with MS45.1
3	Output	S_SLP	0.35 BR/BL	Signal, secondary air pump	Secondary Air Pump Relay
4	Output	T_ELUE	0.5 SW/GN	Signal Electric Cooling Fan	Electric Cooling Fan
5	Ground	M_SHFM	0.5 SW/GE	Negative supply Secondary air - hot-film air-mass meter	Secondary air - hot-film air-mass meter, only with MS45.1
6
7	Ground	M_FWG1	0.35 BR/GN	Ground, accelerator pedal position sensor	Accelerator Pedal
8	Input	A_FWG1	0.35 WS	Signal, accelerator pedal position sensor	Accelerator Pedal
9	Output	U_FWG1	0.35 GE	Supply, accelerator pedal position sensor	Accelerator Pedal
10	Input	S_EKP	0.35 SW/VI	Activation, fuel pump relay	Fuel Pump Relay
11
12	Ground	M_FWG2	0.35 BR	Ground, accelerator pedal position sensor	Accelerator Pedal
13	Input	A_FWG2	0.35 WS/GN	Signal, accelerator pedal position sensor	Accelerator Pedal
14	Output	U_FWG2	0.35 GE/GN	Supply, accelerator pedal position sensor	Accelerator Pedal
15	Input	A_SHFM	0.5 SW/RT	Signal, secondary air/hot-film air mass meter	Secondary air - hot-film air-mass meter, only with MS45.1
16
17	Output	TD	0.35 SW	Engine Speed Signal	OBD-II Connector
18	Output	S_AKL	0.5 GR/VI	Signal, exhaust flap	Exhaust flap solenoid
19	Output	S_EBOXL	0.5 BR/OR	Signal, E-box fan	E-box fan
20	Output	S_DMTLP	0.75 BR/BL	Activation, fuel tank leakage pump	Diagnostic module, fuel tank leakage, only with MS45.1
21	Output	S_GLF	0.5 BR/WS	Signal, radiator shutter solenoid	Solenoid, radiator shutter
22	Input	F_DFAHR	0.35 WS/GN	Signal, processed wheel speed, rear right	Connector X10186 (rear right wheel speed)
23	Input	S_KUP	0.35 BL/BR	Signal Clutch Switch	Clutch Switch
24	Input	S_BLS	0.35 BL/RT	Signal Brake Light Switch (BLS)	Light Control Module
25	Input	S_EAC	0.5 BL/GE	Signal, EAC sensor	EAC sensor, only with M56
26	Input	15<29	0.5 GN/SW	Wake-up signal, terminal 15	Connector , terminal 15 wake-up signal
27	I/O	FGRS	0.35 BL/SW	Signal, Data Link Multi Function Steering Wheel	Volute Spring Steering Wheel
28	Input	S_BLTS	0.35 BR/GR	Signal Brake Light Test Switch (BTS)	Brake Light Switch
29	Output	S_KOREL	0.5 SW/BL	Activation, A/C compressor	A/C compressor relay
30	Output	S_DMTLV	0.5 SW/GN	Signal Diagnostic Module Fuel Tank Leakage Pump (DMTL)	Diagnostic module, fuel tank leakage, only with MS45.1
31	I/O	D_LOCANL	0.5 GN	Signal, CAN low	Fuel pump control (EKPS), only with M56
32	I/O	D_TXD2	0.5 WS/VI	Engine Diagnostic Link TXD	OBD-II Connector
33	I/O	D_EWS	0.35 SW/VI	Electronic Vehicle Immobilisation Crosslink	Electronic Vehicle Immobilisation Unit (EWS)
34
35	I/O	D_LOCANH	0.5 BL/GN	Signal, CAN high	Fuel pump control (EKPS), only with M56
36	I/O	D_CAN_H	GE/RT	CAN High	CAN Bus Connector
37	I/O	D_CAN_L	GE/BR	CAN Low	CAN Bus Connector
38	Input	M_TKA	0.35 SW/GN	Signal Coolant Outlet Temperature	Temperature sensor at radiator outlet
39	Input	A_TKA	0.35 SW/GR	Signal Coolant Outlet Temperature	Temperature sensor at radiator outlet
40	Input	S_START	0.35 GE/BR	Start signal	Car access system

X60005 - Ignition

X60005 9-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Output	P_ZSZ5	1.5 SW/RT/WS	Ignition Signal Cylinder 5	Ignition Coil Cylinder 5
2
3
4	Output	P_ZSZ3	1.5 SW/GE	Ignition Signal Cylinder 3	Ignition Coil Cylinder 3
5	Ground	31L	2.5 BR	Ground	Terminal 31 support, E-box
6	Output	P_ZSZ1	1.5 SW/WS	Ignition Signal Cylinder 1	Ignition Coil Cylinder 1
7	Output	P_ZSZ2	1.5 SW/RT	Ignition Signal Cylinder 2	Ignition Coil Cylinder 2
8	Output	P_ZSZ4	1.5 SW/BL	Ignition Signal Cylinder 4	Ignition Coil Cylinder 4
9	Output	P_ZSZ6	1.5 SW/VI	Ignition Signal Cylinder 6	Ignition Coil Cylinder 6