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Bosch M3.3 S50B30 Pinout: Difference between revisions

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BMW S50B30 engine is controlled by seperated control unit for the double VANOS and the Bosch M3.3 for the rest of engine operation. Both control units communicate over CAN bus.


{| class="wikitable" style="width: 900px; font-weight:bold;"
=Engine Control Unit=
|- style="font-weight:normal;"
[[File:Bosch M3.3 Page 1.jpg|thumb|right|Bosch M3.3 Pinout]]
! colspan="3" style="font-weight:bold;" | Engine  Control Unit
 
{| class="wikitable" style="width: 900px; font-weight:bold; text-align:center;"
|- style="font-weight:normal; text-align:left;"
! colspan="3" style="text-align:center; font-weight:bold;" | Engine  Control Unit
|-
|-
| Pin
| Pin
| Type
| Type
| Description
| style="text-align:left;" | Description
|-
|-
| 1
| 1
| Output
| Output
| style="font-weight:normal;" | Fuel Pump Relay
| style="font-weight:normal; text-align:left;" | Fuel Pump Relay
|-
|-
| 2
| 2
| Output
| Output
| style="font-weight:normal;" | Idle Control Valve (Closing)
| style="font-weight:normal; text-align:left;" | Idle Control Valve (Closing)
|-
|-
| 3
| 3
| Output
| Output
| style="font-weight:normal;" | Injection Valve Cylinder 1
| style="font-weight:normal; text-align:left;" | Injection Valve Cylinder 1
|-
|-
| 4
| 4
| Output
| Output
| style="font-weight:normal;" | Injection Valve Cylinder 3
| style="font-weight:normal; text-align:left;" | Injection Valve Cylinder 3
|-
|-
| 5
| 5
| Output
| Output
| style="font-weight:normal;" | Injection Valve Cylinder 5
| style="font-weight:normal; text-align:left;" | Injection Valve Cylinder 5
|-
|-
| 6
| 6
| Ground
| Ground
| style="font-weight:normal;" | Ground Injection Valves
| style="font-weight:normal; text-align:left;" | Ground Injection Valves
|-
|-
| 8
| 8
| Output
| Output
| style="font-weight:normal;" | Malfunction Inidicator Light
| style="font-weight:normal; text-align:left;" | Malfunction Inidicator Light
|-
|-
| 12
| 12
| Input
| Input
| style="font-weight:normal;" | O2 Sensor Bank 2
| style="font-weight:normal; text-align:left;" | O2 Sensor Bank 2
|-
|-
| 13
| 13
| Input
| Input
| style="font-weight:normal;" | O2 Sensor Bank 1
| style="font-weight:normal; text-align:left;" | O2 Sensor Bank 1
|-
|-
| 14
| 14
| Ground
| Ground
| style="font-weight:normal;" | Mass Air Sensor
| style="font-weight:normal; text-align:left;" | Mass Air Sensor
|-
|-
| 15
| 15
| Input
| Input
| style="font-weight:normal;" | Ignition Circuit Monitoring
| style="font-weight:normal; text-align:left;" | Ignition Circuit Monitoring
|-
|-
| 16
| 16
| Input
| Input
| style="font-weight:normal;" | Crankshaft Sensor +
| style="font-weight:normal; text-align:left;" | Crankshaft Sensor +
|-
|-
| 17
| 17
| Input
| Input
| style="font-weight:normal;" | Camshaft Sensor +
| style="font-weight:normal; text-align:left;" | Camshaft Sensor +
|-
|-
| 19
| 19
| Output
| Output
| style="font-weight:normal;" | Secondary Air Pump Relay
| style="font-weight:normal; text-align:left;" | Secondary Air Pump Relay
|-
|-
| 23
| 23
| Output
| Output
| style="font-weight:normal;" | Ignition Coil Cylinder 5
| style="font-weight:normal; text-align:left;" | Ignition Coil Cylinder 5
|-
|-
| 24
| 24
| Output
| Output
| style="font-weight:normal;" | Ignition Coil Cylinder 3
| style="font-weight:normal; text-align:left;" | Ignition Coil Cylinder 3
|-
|-
| 25
| 25
| Output
| Output
| style="font-weight:normal;" | Ignition Coil Cylinder 1
| style="font-weight:normal; text-align:left;" | Ignition Coil Cylinder 1
|-
|-
| 26
| 26
| Input
| Input
| style="font-weight:normal;" | Voltage Supply Terminal 30
| style="font-weight:normal; text-align:left;" | Voltage Supply Terminal 30
|-
|-
| 27
| 27
| Output
| Output
| style="font-weight:normal;" | Main Relay
| style="font-weight:normal; text-align:left;" | Main Relay
|-
|-
| 28
| 28
| Ground
| Ground
| style="font-weight:normal;" | Ground Injection Valves
| style="font-weight:normal; text-align:left;" | Ground Injection Valves
|-
|-
| 29
| 29
| Output
| Output
| style="font-weight:normal;" | Idle Control Valve (Opening)
| style="font-weight:normal; text-align:left;" | Idle Control Valve (Opening)
|-
|-
| 31
| 31
| Output
| Output
| style="font-weight:normal;" | Injection Valve Cylinder 2
| style="font-weight:normal; text-align:left;" | Injection Valve Cylinder 2
|-
|-
| 32
| 32
| Output
| Output
| style="font-weight:normal;" | Injection Valve Cylinder 4
| style="font-weight:normal; text-align:left;" | Injection Valve Cylinder 4
|-
|-
| 33
| 33
| Output
| Output
| style="font-weight:normal;" | Injection Valve Cylinder 6
| style="font-weight:normal; text-align:left;" | Injection Valve Cylinder 6
|-
|-
| 34
| 34
| Ground
| Ground
| style="font-weight:normal;" | Ground Other Amplifier
| style="font-weight:normal; text-align:left;" | Ground Other Amplifier
|-
|-
| 36
| 36
| Output
| Output
| style="font-weight:normal;" | Tank Ventilation Valve
| style="font-weight:normal; text-align:left;" | Tank Ventilation Valve
|-
|-
| 37
| 37
| Output
| Output
| style="font-weight:normal;" | O2 Sensor Heater Relay
| style="font-weight:normal; text-align:left;" | O2 Sensor Heater Relay
|-
|-
| 39
| 39
| Ground
| Ground
| style="font-weight:normal;" | O2 Sensor Bank 2
| style="font-weight:normal; text-align:left;" | O2 Sensor Bank 2
|-
|-
| 40
| 40
| Ground
| Ground
| style="font-weight:normal;" | O2 Sensor Bank 1
| style="font-weight:normal; text-align:left;" | O2 Sensor Bank 1
|-
|-
| 41
| 41
| Input
| Input
| style="font-weight:normal;" | Mass Air Sensor
| style="font-weight:normal; text-align:left;" | Mass Air Sensor
|-
|-
| 42
| 42
| Input
| Input
| style="font-weight:normal;" | Vehicle Speed Signal
| style="font-weight:normal; text-align:left;" | Vehicle Speed Signal
|-
|-
| 43
| 43
| Input
| Input
| style="font-weight:normal;" | Crankshaft Sensor -
| style="font-weight:normal; text-align:left;" | Crankshaft Sensor -
|-
|-
| 44
| 44
| Input
| Input
| style="font-weight:normal;" | Camshaft Sensor -
| style="font-weight:normal; text-align:left;" | Camshaft Sensor -
|-
|-
| 45
| 45
| Ground
| Ground
| style="font-weight:normal;" | Ground Ignition Circuit Monitoring
| style="font-weight:normal; text-align:left;" | Ground Ignition Circuit Monitoring
|-
|-
| 46
| 46
| Output
| Output
| style="font-weight:normal;" | Engine Speed Signal
| style="font-weight:normal; text-align:left;" | Engine Speed Signal
|-
|-
| 47
| 47
| Output
| Output
| style="font-weight:normal;" | Fuel Consumption Signal
| style="font-weight:normal; text-align:left;" | Fuel Consumption Signal
|-
|-
| 48
| 48
| Output
| Output
| style="font-weight:normal;" | Air Conditioning Compressor Relay
| style="font-weight:normal; text-align:left;" | Air Conditioning Compressor Relay
|-
|-
| 50
| 50
| Output
| Output
| style="font-weight:normal;" | Ignition Coil Cylinder 6
| style="font-weight:normal; text-align:left;" | Ignition Coil Cylinder 6
|-
|-
| 51
| 51
| Output
| Output
| style="font-weight:normal;" | Ignition Coil Cylinder 4
| style="font-weight:normal; text-align:left;" | Ignition Coil Cylinder 4
|-
|-
| 52
| 52
| Output
| Output
| style="font-weight:normal;" | Ignition Coil Cylinder 2
| style="font-weight:normal; text-align:left;" | Ignition Coil Cylinder 2
|-
|-
| 54
| 54
| Input
| Input
| style="font-weight:normal;" | Voltage Supply Main Relay
| style="font-weight:normal; text-align:left;" | Voltage Supply Main Relay
|-
|-
| 55
| 55
| Ground
| Ground
| style="font-weight:normal;" | Ground Ignition
| style="font-weight:normal; text-align:left;" | Ground Ignition
|-
|-
| 56
| 56
| Input
| Input
| style="font-weight:normal;" | Voltage Supply Terminal 15
| style="font-weight:normal; text-align:left;" | Voltage Supply Terminal 15
|-
|-
| 59
| 59
| Output
| Output
| style="font-weight:normal;" | +5V Supply Voltage
| style="font-weight:normal; text-align:left;" | +5V Supply Voltage
|-
|-
| 60
| 60
| Input
| Input
| style="font-weight:normal;" | Programming Voltage
| style="font-weight:normal; text-align:left;" | Programming Voltage
|-
|-
| 64
| 64
| Input
| Input
| style="font-weight:normal;" | Air Conditioning Switch
| style="font-weight:normal; text-align:left;" | Air Conditioning Switch
|-
|-
| 65
| 65
| Input
| Input
| style="font-weight:normal;" | Air Conditioning Compressor
| style="font-weight:normal; text-align:left;" | Air Conditioning Compressor
|-
|-
| 66
| 66
| Input
| Input
| style="font-weight:normal;" | Immobilizer
| style="font-weight:normal; text-align:left;" | Immobilizer
|-
|-
| 68
| 68
| Input
| Input
| style="font-weight:normal;" | Knock Sensor 3
| style="font-weight:normal; text-align:left;" | Knock Sensor 3
|-
|-
| 69
| 69
| Input
| Input
| style="font-weight:normal;" | Knock Sensor 2
| style="font-weight:normal; text-align:left;" | Knock Sensor 2
|-
|-
| 70
| 70
| Input
| Input
| style="font-weight:normal;" | Knock Sensor 1
| style="font-weight:normal; text-align:left;" | Knock Sensor 1
|-
|-
| 71
| 71
| Ground
| Ground
| style="font-weight:normal;" | Ground Analog & Knock Sensors
| style="font-weight:normal; text-align:left;" | Ground Analog & Knock Sensors
|-
|-
| 73
| 73
| Input
| Input
| style="font-weight:normal;" | Throttle Position Sensor
| style="font-weight:normal; text-align:left;" | Throttle Position Sensor
|-
|-
| 77
| 77
| Input
| Input
| style="font-weight:normal;" | Intake Air Temperature Sensor
| style="font-weight:normal; text-align:left;" | Intake Air Temperature Sensor
|-
|-
| 78
| 78
| Input
| Input
| style="font-weight:normal;" | Engine Temperature Sensor
| style="font-weight:normal; text-align:left;" | Engine Temperature Sensor
|-
|-
| 82
| 82
| Input
| Input
| style="font-weight:normal;" | Engine Running Detection
| style="font-weight:normal; text-align:left;" | Engine Running Detection
|-
|-
| 84
| 84
| Ground
| Ground
| style="font-weight:normal;" | CAN Bus Shielding
| style="font-weight:normal; text-align:left;" | CAN Bus Shielding
|-
|-
| 85
| 85
| I/O
| I/O
| style="font-weight:normal;" | CAN Bus Low
| style="font-weight:normal; text-align:left;" | CAN Bus Low
|-
|-
| 86
| 86
| I/O
| I/O
| style="font-weight:normal;" | CAN Bus High
| style="font-weight:normal; text-align:left;" | CAN Bus High
|-
|-
| 87
| 87
| I/O
| I/O
| style="font-weight:normal;" | Diagnostic Link TXD
| style="font-weight:normal; text-align:left;" | Diagnostic Link TXD
|}
 
=Vanos Control Unit=
[[File:Bosch M3.3 Page 2.jpg|thumb|right|M3.3 VANOS Pinout]]
 
{| class="wikitable" style="width: 900px; font-weight:bold; text-align:center;"
|- style="text-align:left;"
! colspan="3" style="text-align:center;" | VANOS Control Unit
|-
| Pin
| Type
| style="text-align:left;" | Description
|-
| 1
| Output
| style="font-weight:normal; text-align:left;" | Solenoid 1 (Retard)
|-
| 2
| Ground
| style="font-weight:normal; text-align:left;" | Ground Load
|-
| 3
| I/O
| style="font-weight:normal; text-align:left;" | Diagnostic Link RXD
|-
| 4
| I/O
| style="font-weight:normal; text-align:left;" | CAN Bus Low
|-
| 5
| Ground
| style="font-weight:normal; text-align:left;" | Ground Electronic
|-
| 6
| Input
| style="font-weight:normal; text-align:left;" | Camshaft Sensor Exhaust
|-
| 8
| Input
| style="font-weight:normal; text-align:left;" | Voltage Supply Terminal 15
|-
| 9
| Output
| style="font-weight:normal; text-align:left;" | Solenoid 2 (Advance)
|-
| 10
| Output
| style="font-weight:normal; text-align:left;" | Electronic Cooling Fan Relay
|-
| 11
| I/O
| style="font-weight:normal; text-align:left;" | Diagnostic Link TXD
|-
| 12
| I/O
| style="font-weight:normal; text-align:left;" | CAN Bus High
|-
| 13
| Input
| style="font-weight:normal; text-align:left;" | Voltage Supply Main Relay
|-
| 14
| Input
| style="font-weight:normal; text-align:left;" | Camshaft Sensor Intake
|}
|}

Latest revision as of 12:26, 1 July 2021

BMW S50B30 engine is controlled by seperated control unit for the double VANOS and the Bosch M3.3 for the rest of engine operation. Both control units communicate over CAN bus.

Engine Control Unit

Bosch M3.3 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

Vanos Control Unit

M3.3 VANOS Pinout
VANOS Control Unit
Pin Type Description
1 Output Solenoid 1 (Retard)
2 Ground Ground Load
3 I/O Diagnostic Link RXD
4 I/O CAN Bus Low
5 Ground Ground Electronic
6 Input Camshaft Sensor Exhaust
8 Input Voltage Supply Terminal 15
9 Output Solenoid 2 (Advance)
10 Output Electronic Cooling Fan Relay
11 I/O Diagnostic Link TXD
12 I/O CAN Bus High
13 Input Voltage Supply Main Relay
14 Input Camshaft Sensor Intake
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