Siemens MS45.0 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	Description / Signal type	Connection / Measuring notes
1	Input	Voltage Supply Terminal 15	Fuel Injector Relay K6327
2
3	I/O	Diagnostic Link TXD	K-Line
4	Ground	Ground	Ground Connector X6454
5	Ground	Ground	Ground Connector X6458
6	Ground	Ground	Ground Connector X6458
7	Input	Voltage Supply Terminal 30	B+ Potential Distributor A2076
8	Input	Voltage Supply Terminal 87	Fuse Carrier Engine Electronics A8680
9	Input

X60004 - Vehicle

X60004 40-pin
Pin	Type	Description / Signal type	Connection / Measuring notes
1
2
3	Output	[0/1] Signal Secondary Air Pump Relay	Secondary Air Pump Relay
4	Output	[PWM] Signal Electric Cooling Fan	Electric Cooling Fan
5	Ground	Secondary Air Pump MAF Sensor	Secondary Air Pump MAF Sensor
6
7	Ground	Pedal Value Sensor	Accelerator Pedal
8	Input	[0-5V] Signal Pedal Value Sensor 1	Accelerator Pedal
9	Output	[+5V] Supply Voltage 1 Pedal Value Sensor	Accelerator Pedal
10	Input	Signal Fuel Pump Relay	Fuel Pump Relay
11
12	Ground	Pedal Value Sensor	Accelerator Pedal
13	Input	[0-5V] Signal Pedal Value Sensor 2	Accelerator Pedal
14	Output	[+5V] Supply Voltage 2 Pedal Value Sensor	Accelerator Pedal
15	Input	[0-5V] Signal Secondary Air Pump MAF Sensor	Secondary Air Pump MAF Sensor
16
17	Output	Engine Speed Signal	OBD-II Connector
18	Output	[0/1] Signal Exhaust Flap Valve (M54B25xi & M54B30 Only)	Exhaust Flap Valve
19
20	Input	[0-5V] Signal Diagnostic Module Fuel Tank Leakage (DMTL)	Diagnostic Module Fuel Tank Leakage
21
22	Input	Signal Processed Wheel Speed Sensor Rear Right	ABS/ASC or ABS/DSC Control Unit
23	Input	[0-5V] Signal Clutch Switch	Clutch Switch
24	Input	[0-5V] Signal Brake Light Switch (BLS)	Light Control Module
25
26	Input	Voltage Supply Terminal 15	Fuse F29
27	I/O	Data Link Multi Function Steering Wheel	Volute Spring Steering Wheel
28	Input	[0-5V] Signal Brake Light Test Switch (BTS)	Brake Light Switch
29	Output	[0/1] Signal A/C Compressor Relay (ACC_RLY)	A/C Compressor Relay
30	Output	[0/1] Signal Diagnostic Module Fuel Tank Leakage Pump (DMTL)	Diagnostic Module Fuel Tank Leakage
31
32	I/O	Engine Diagnostic Link TXD	OBD-II Connector
33	[I/O]	Electronic Vehicle Immobilisation Crosslink	Electronic Vehicle Immobilisation Unit (EWS)
34	Input	[0-5V] Input Fuel Cap Status Switch	Diagnostic Module Fuel Tank Leakage
35
36	I/O	CAN High	CAN Bus Connector
37	I/O	CAN Low	CAN Bus Connector
38	Ground	Coolant Outlet Temperature	Coolant Outlet Temperature Sensor
39	Input	[0-5V] Signal Coolant Outlet Temperature	Coolant Outlet Temperature Sensor
40

X60005 - Ignition

X60005 9-pin
Pin	Type	Description / Signal type	Connection / Measuring notes
1	Output	Ignition Signal Cylinder 5	Ignition Coil Cylinder 5
2
3
4	Output	Ignition Coil Cylinder 3	Ignition Signal Cylinder 3
5	Ground	Ignition Coil Ground	Ground Connector X6458
6	Output	Ignition Signal Cylinder 1	Ignition Coil Cylinder 1
7	Output	Ignition Signal Cylinder 2	Ignition Coil Cylinder 2
8	Output	Ignition Signal Cylinder 4	Ignition Coil Cylinder 4
9	Output	Ignition Signal Cylinder 6	Ignition Coil Cylinder 6