Siemens MS43 Pinout

Note: Some pins were intended to be used in further developement stages, but never in actual production. We marked them grey in the following table.

X60001 - Voltage Supply

X60001 9-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Input	U_15	0.5 GN	Voltage Supply Terminal 15	Fuel Injector Relay K6327
2
3	I/O	D_TXD2	0.5 WS/VI	Diagnostic Link TXD	K-Line
4	Ground	31E	1.5 BR/OR	Ground	Ground Connector X6454
5	Ground	31L	1.5 BR	Ground	Ground Connector X6458
6	Ground	31L	1.5 BR	Ground	Ground Connector X6458
7	Input	30H<102	1.5 RT	Voltage Supply Terminal 30	B+ Potential Distributor A2076
8	Input	U_HR<2	1.5 RT/WS/GE	Voltage Supply Terminal 87	Fuse Carrier Engine Electronics A8680
9	Input	U_HR<2	1.5 RT/WS/GE	(optional) Fuel Injector Supply Voltage	(optional) Fuel Injector Relay K6327

X60002 - Peripherals

X60002 24-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Output	T_LHV1	0.50 BR	[PWM] O2 Sensor Heater Pre-Cat Bank 1	Heated O2 Sensor Pre-Cat Bank 1 B62101
2	Input			[0-5V] Signal EGT Sensor Pre-Cat Bank 1	Never Used In Production
3	I/O	D_CAN--L	0.35 SW	Gearbox CAN-Low	Transmission Control Unit A7000 (AT/SMG only)
4	I/O	D_CAN--H	0.35 GE	Gearbox CAN-High	Transmission Control Unit A7000 (AT/SMG only)
5	Input			[0-5V] Signal EGT Sensor Pre-Cat Bank 2	Never Used In Production
6	I/O	D_TXD2	0.50 WS/VI	Gearbox Diagnostic Link TXD2	Transmission Control Unit A7000 (AT/SMG only)
7	Output	T_LHH1	0.50 BR	[PWM] O2 Sensor Heater Post-Cat Bank 1	Heated O2 Sensor Post-Cat Bank 1 B62102
8	Ground			EGT Sensor Pre-Cat Bank 1	Never Used In Production
9	Ground			EGT Sensor Pre-Cat Bank 2	Never Used In Production
10	Ground			EGT Sensor Post-Cat Bank 1	Never Used In Production
11	Ground			EGT Sensor Post-Cat Bank 2	Never Used In Production
12	Input	U_HR<2	0.50 RT/WS	[0/1] Pencil Coil Detection	ECU Main Relay With Pencil Coils
13	Output	T_LHV2	0.50 BR	[PWM] O2 Sensor Heater Pre-Cat Bank 2	Heated O2 Sensor Pre-Cat Bank 2 B62201
14	Input	A_LSV1	0.50 GE	[0-5V] Signal O2 Sensor Pre-Cat Bank 1	Heated O2 Sensor Pre-Cat Bank 1 B62101
15	Input	A_LSV2	0.50 GE	[0-5V] Signal O2 Sensor Pre-Cat Bank 2	Heated O2 Sensor Pre-Cat Bank 2 B62201
16	Input	A_LSH1	0.50 GE	[0-5V] Signal O2 Sensor Post-Cat Bank 1	Heated O2 Sensor Post-Cat Bank 1 B62102
17	Input			[0-5V] Signal EGT Sensor Post-Cat Bank 2	Never Used In Production
18	Input	A_LSH2	0.50 GE	[0-5V] Signal O2 Sensor Post-Cat Bank 2	Heated O2 Sensor Post-Cat Bank 2 B62202
19	Output	T_LHH2	0.50 BR	[PWM] O2 Sensor Heater Post-Cat Bank 2	Heated O2 Sensor Post-Cat Bank 2 B62202
20	Ground	M_LSV1	0.50 SW	O2 Sensor Pre-Cat Bank 1	Heated O2 Sensor Pre-Cat Bank 1 B62101
21	Ground	M_LSV2	0.50 SW	O2 Sensor Pre-Cat Bank 2	Heated O2 Sensor Pre-Cat Bank 2 B62201
22	Ground	M_LSH1	0.50 SW	O2 Sensor Post-Cat Bank 1	Heated O2 Sensor Post-Cat Bank 1 B62102
23	Output	S_HR	0.50 BR/WS	[0/1] ECU Main Relay Control	ECU Main Relay K6300
24	Ground	M_LSH2	0.50 SW	O2 Sensor Post-Cat Bank 2	Heated O2 Sensor Post-Cat Bank 2 B62202

X60003 - Engine

X60003 52-pin
Pin	Type	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
3	Output	S_SLP	0.35 BR/BL	[0/1] Signal Secondary Air Pump Relay	Secondary Air Pump Relay
4	Output	T_ELUE	0.50 SW/GN	[PWM] Signal Electric Cooling Fan	Electric Cooling Fan
5	Ground	M_SHFM	0.50 SW/GE	Secondary Air Pump MAF Sensor	Secondary Air Pump MAF Sensor
6
7	Ground	M_FWG1	0.35 BR/GN	Pedal Value Sensor	Accelerator Pedal
8	Input	A_FWG1	0.35 WS	[0-5V] Signal Pedal Value Sensor 1	Accelerator Pedal
9	Output	U_FWG1	0.35 GE	[+5V] Supply Voltage 1 Pedal Value Sensor	Accelerator Pedal
10	Input	S_EKP	0.35 SW/VI	Signal Fuel Pump Relay	Fuel Pump Relay
11
12	Ground	M_FWG2	0.35 BR	Pedal Value Sensor	Accelerator Pedal
13	Input	A_FWG2	0.35 WS/GN	[0-5V] Signal Pedal Value Sensor 2	Accelerator Pedal
14	Output	U_FWG2	0.35 GE/GN	[+5V] Supply Voltage 2 Pedal Value Sensor	Accelerator Pedal
15	Input	A_SHFM	0.50 SW/RT	[0-5V] Signal Secondary Air Pump MAF Sensor	Secondary Air Pump MAF Sensor
16	Output			Spare Output 4	Never Used In Production
17	Output	F_TD	0.35 SW	Engine Speed Signal	OBD-II Connector
18	Output	S_AKL	0.50 GR/VI	[0/1] Signal Exhaust Flap Valve (M54B25xi & M54B30 Only)	Exhaust Flap Valve
19	Output
20	Input	DMTL	0.50 SW/GN	[0-5V] Signal Diagnostic Module Fuel Tank Leakage (DMTL)	Diagnostic Module Fuel Tank Leakage
21
22	Input	F_DFAHR	0.35 WS/GN	Signal Processed Wheel Speed Sensor Rear Right	ABS/ASC or ABS/DSC Control Unit
23	Input	S_KUP	0.35 BL/BR	[0-5V] Signal Clutch Switch	Clutch Switch
24	Input	S_BLS	0.35 BL/RT	[0-5V] Signal Brake Light Switch (BLS)	Light Control Module
25
26	Input	15<29	0.50 GN/VI	Voltage Supply Terminal 15	Fuse F29
27	Input	FGRS	0.35 BL/SW	Data Link Multi Function Steering Wheel	Volute Spring Steering Wheel
28	Input	S_BLTS	0.35 BR/GR	[0-5V] Signal Brake Light Test Switch (BTS)	Brake Light Switch
29	Output	S_KOREL	0.50 SW/BL	[0/1] Signal A/C Compressor Relay (ACC_RLY)	A/C Compressor Relay
30	Output	DMTLP	0.75 BR/BL	[0/1] Signal Diagnostic Module Fuel Tank Leakage Pump (DMTL)	Diagnostic Module Fuel Tank Leakage
31
32	I/O	D_TXD2	0.50 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	Input			[0-5V] Input Fuel Cap Status Switch	Diagnostic Module Fuel Tank Leakage
35	Ground	31	0.50 BR/OR	Cruise control interface	Cruise control interface (Z3 only)
36	I/O	D_CAN--H	0.50 GE/RT	CAN High	CAN Bus Connector
37	I/O	D_CAN--L	0.50 GE/BR	CAN Low	CAN Bus Connector
38	Ground	M_TKA	0.35 SW/GN	Coolant Outlet Temperature	Coolant Outlet Temperature Sensor
39	Input	A_TKA	0.35 SW/GR	[0-5V] Signal Coolant Outlet Temperature	Coolant Outlet Temperature Sensor
40

X60005 - Ignition

X60005 9-pin
Pin	Type	Name	Wire	Description / Signal type	Connection / Measuring notes
1	Output	P_ZSZ3	1.5 SW/GE	Ignition Signal Cylinder 3	Ignition Coil Cylinder 3
2	Output	P_ZSZ2	1.5 SW/RT	Ignition Signal Cylinder 2	Ignition Coil Cylinder 2
3	Output	P_ZSZ1	1.5 SW/WS	Ignition Signal Cylinder 1	Ignition Coil Cylinder 1
4
5	Ground	31L	2.5 BR	Ignition Coil Ground	Ground Connector X6458
6	Input	A_ZSR	0.5 BR	Signal Feedback Ignition Coils	Ignition Coil Wiring Harness
7	Output	P_ZSZ6	1.5 SW/VI	Ignition Signal Cylinder 6	Ignition Coil Cylinder 6
8	Output	P_ZSZ5	1.5 SW/GN	Ignition Signal Cylinder 5	Ignition Coil Cylinder 5
9	Output	P_ZSZ4	1.5 SW/BL	Ignition Signal Cylinder 4	Ignition Coil Cylinder 4