Bosch M3.3 S50B30 Pinout

Engine Control Unit
Pin	Type	Description
1	Output	Fuel Pump Relay
2	Output	Idle Control Valve (Closing)
3	Output	Injection Valve Cylinder 1
4	Output	Injection Valve Cylinder 3
5	Output	Injection Valve Cylinder 5
6	Ground	Ground Injection Valves
8	Output	Malfunction Inidicator Light
12	Input	O2 Sensor Bank 2
13	Input	O2 Sensor Bank 1
14	Ground	Mass Air Sensor
15	Input	Ignition Circuit Monitoring
16	Input	Crankshaft Sensor +
17	Input	Camshaft Sensor +
19	Output	Secondary Air Pump Relay
23	Output	Ignition Coil Cylinder 5
24	Output	Ignition Coil Cylinder 3
25	Output	Ignition Coil Cylinder 1
26	Input	Voltage Supply Terminal 30
27	Output	Main Relay
28	Ground	Ground Injection Valves
29	Output	Idle Control Valve (Opening)
31	Output	Injection Valve Cylinder 2
32	Output	Injection Valve Cylinder 4
33	Output	Injection Valve Cylinder 6
34	Ground	Ground Other Amplifier
36	Output	Tank Ventilation Valve
37	Output	O2 Sensor Heater Relay
39	Ground	O2 Sensor Bank 2
40	Ground	O2 Sensor Bank 1
41	Input	Mass Air Sensor
42	Input	Vehicle Speed Signal
43	Input	Crankshaft Sensor -
44	Input	Camshaft Sensor -
45	Ground	Ground Ignition Circuit Monitoring
46	Output	Engine Speed Signal
47	Output	Fuel Consumption Signal
48	Output	Air Conditioning Compressor Relay
50	Output	Ignition Coil Cylinder 6
51	Output	Ignition Coil Cylinder 4
52	Output	Ignition Coil Cylinder 2
54	Input	Voltage Supply Main Relay
55	Ground	Ground Ignition
56	Input	Voltage Supply Terminal 15
59	Output	+5V Supply Voltage
60	Input	Programming Voltage
64	Input	Air Conditioning Switch
65	Input	Air Conditioning Compressor
66	Input	Immobilizer
68	Input	Knock Sensor 3
69	Input	Knock Sensor 2
70	Input	Knock Sensor 1
71	Ground	Ground Analog & Knock Sensors
73	Input	Throttle Position Sensor
77	Input	Intake Air Temperature Sensor
78	Input	Engine Temperature Sensor
82	Input	Engine Running Detection
84	Ground	CAN Bus Shielding
85	I/O	CAN Bus Low
86	I/O	CAN Bus High
87	I/O	Diagnostic Link TXD