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451 MHD Starternator Wiring

Mod Details
PremiumNo Difficulty Mod ID1858 Creditevilution For451 Fortwo Linkhttps://www.evilution.co.uk/mod/451-mhd-starternator-wiring.htm Copy to Clipboard

Starter Alternator Unit

Connector 1

Pin Number Wire Colour Connects To Function
1 Brown/Yellow Starter Alternator Controller Pin D2 Ground
2 Violet/White Starter Alternator Controller Pin K3 Sensor 5 volts
3 Orange/Violet Starter Alternator Controller Pin E4 Sensor V
4 Yellow/Green Starter Alternator Controller Pin D4 Sensor U
5 Blue/Pink Starter Alternator Controller Pin F4 Sensor W
6 No Connection No Connection No Connection

The 3 sensors measure the rotation speed because the unit is essentially a 3 phase motor, so the motor tells the controller the position of the rotor so it can switch the phases to either spin it as a starter motor or accept 3 phase power as an alternator.

Connector 2

Pin Number Wire Colour Connects To Function
1 Black/Blue Starter Alternator Controller Pin L4 & M4 Generator Exciter –
2 Green/Red Starter Alternator Controller Pin L3 & M3 Generator Exciter +

The exciter system is responsible for supplying the field current to the main rotor. Without the exciter, it wouldn’t be able to build up or regulate the voltage created.

Connector 3

Pin Number Wire Colour Connects To Function
1 Brown Starter Alternator Controller 3 Phase Connector Phase 1
2 Grey Starter Alternator Controller 3 Phase Connector Phase 2
3 Black Starter Alternator Controller 3 Phase Connector Phase 3

3 Phase Controller

This unit turns DC into 3 phase AC to turn the motor as a starter motor. It also converts 3 phase AC back to DC to charge the battery.

Connector 4

Pin Number Wire Colour Connects To Function
1 Brown Starter Alternator Connector 3 Phase 1
2 Grey Starter Alternator Connector 3 Phase 2
3 Black Starter Alternator Connector 3 Phase 3

 

Connector 5 is a bit bizarre the way it’s labelled. It has 3 rows numbered 2 (top), 3 (middle) and 4 (bottom). However, the pins are lettered instead of numbered.

L & M are probably the larger pins to the right since the have thicker wires connected. I would imagine they are labelled A, B, C, D, E, F, G, H, J, K, L, M.

Connector 5

Pin Letter Wire Colour Connects To Function
A2 Green Speedo Pin 9 CAN Bus Low
B2 Green ESP Controller Pin 14 CAN Bus Low
D2 Brown/Yellow Starter Connector 1, Pin 1 Ground
J2 Black/Yellow SAM Unit Fuse 10 Switched Live
M2 Red/White SAM Unit Fuse 12 Permanent Live
A3 Grey/Pink Start/Stop Button Pin 1 Stop/Start On
E3 Grey/Violet Brake Pressure Switch Brake Pressure Switch
J3 Pink/Brown Transmission Controller Pin 22 Sperre
K3 Violet/White Starter Connector 1, Pin 2 Sensor 5 Volts
L3 Green/Red Starter Connector 2, Pin 2 Motor Exciter +
M3 Green/Red Starter Connector 2, Pin 2 Motor Exciter +
A4 Green/White Speedo Pin 6 CAN Bus High
B4 Green/White ESP Controller Pin 35 CAN Bus High
C4 Orange/Blue Start/Stop Button Pin 2 Stop/Start Off
D4 Orange/Violet Starter Connector 1, Pin 4 Rotation Sensor U
E4 Blue/Pink Starter Connector 1, Pin 3 Rotation Sensor V
F4 Yellow/Green Starter Connector 1, Pin 5 Rotation Sensor W
G4 Blue/White Battery Sensor LIN Bus
L4 Black/Blue Starter Connector 2, Pin 1 Motor Exciter –
M4 Black/Blue Starter Connector 2, Pin 1 Motor Exciter –

 

Connector 6

Pin Number Wire Colour Connects To Function
1 Red 12V Battery + 12 Volts

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