Someone sanity check my relay diagram

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Yoshi
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Someone sanity check my relay diagram

Postby Yoshi » Tue Jan 24, 2012 2:28 am

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Ignore the MS plugs and the injectors/coils. I really just need a sanity check on the relays.
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Re: Someone sanity check my relay diagram

Postby Nsquared97 » Tue Jan 24, 2012 2:46 am

Paging Maksim!
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Re: Someone sanity check my relay diagram

Postby ss45466 » Tue Jan 24, 2012 4:34 am

Best I can do under my current condition, need another beer...

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Hope it helps.
-dizzy-
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Re: Someone sanity check my relay diagram

Postby M20_fever » Tue Jan 24, 2012 1:22 pm

^^^that chart is awesome! Does it apply to ms3?
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Re: Someone sanity check my relay diagram

Postby ss45466 » Tue Jan 24, 2012 1:44 pm

I'd have to look @ the build manual for ms3. But it came from chris325ix @ the tech and he's on ms3 so I would assume so.
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Re: Someone sanity check my relay diagram

Postby ss45466 » Tue Jan 24, 2012 2:42 pm

http://www.megasquirt.325ix.com/MS_to_M ... 3.3.1.html

Click on the top link^ for an easier read. This is for an 88 pin DME, M50TU harness.

Motronic 3.3.1 to Megasquirt 3 + MS3x Rough Draft, v0.999a
Firing Order 1-5-3-6-2-4 © 2010 Chris Seigman
Pin Legend: MS3x: 00x
RS232: 0s
Motronic MS3+ MS3x Wire Color Motronic 3.3.1 FN MS3/MS3x FN Motronic 3.3.1 Notes MS3/MS3x Notes
1 37 Brown/Green FP relay, Terminal 85 FP FP/O2
2 27x White/Yellow ICV (closed) VVT PWM Output (3a)
3 16x Brown/Green Cyl 5 Fuel Injector INJ B B
4 10x Brown/Violet Cyl 6 Fuel Injector INJ D D
5 4x Brown/Blue Cyl 4 Fuel Injector INJ F F
6 7 Brown Ground (O2/Coil Shield) Ground
7 27x Green/Blue VANOS Actuator VVT VVT/VANOS is experimental at this stage PWM Output (3a)
8 - Gray Check engine light - Usefull? Probably not..
13 23 Yellow O2 sensor input O2
15 8 Black Ground (Coils) Ground Ignition coils 1-6 (X6456)
16 24 Yellow Crank sensor (+) S TachIn
17 32x Yellow Hall Effect Cam Sensor (Pin 2) Cam Input Pin 1 is +12v, 3 is ground VR/Hall/Opto
23 36x Black/Blue Cyl 4 Coil Spark F FF
24 34x Black/Violet Cyl 6 Coil Spark D DD
25 33x Black/Green Cyl 5 Coil Spark B BB
26 - Red B+12v junction point - Banded end of 1n4001
27 31 Brown ECM relay, terminal 85 IAC2b Collector of 2n2222a, 1n4001
28 9 Brown/Orange Ground (Sensors, Shields) Ground
29 9x White/Green ICV (open) FIDLE PWM Output (3a)
31 13x Brown/Yellow Cyl 3 Fuel Injector INJ C C
32 7x Brown/Red Cyl 2 Fuel Injector INJ E E
33 19x Brown/White Cyl 1 Fuel Injector INJ A A
34 10 Brown Ground (O2/Coil Shield) Ground
36 24x Brown Evaporative emission valve Nitrous 1 Trigger Evap valve - conditions?
38 37 Brown/Green O2 relay, terminal 85 FP FP/O2
40 11 Black Ground (O2 sensor signal) Ground
42 29x Black/White VSS - from cluster N2O IN Can also use MS3x spare ADCs as inputs 12v or GND switched input
43 12 Black Crank sensor (-) N Ground
44 13 Brown Ground (IAT, CLT, TPS) Ground
45 14 - Ground (Ignition Shield) Ground
46 - White/Black Econometer - to cluster Output http://www.seattlecircuit.com Ecometer conditioning board
47 6 Black Tachometer - to cluster JS11 Tachout - SPR4
50 14x Black/White Cyl 1 Coil Spark A AA
51 35x Black/Red Cyl 2 Coil Spark E EE
52 15x Black/Yellow Cyl 3 Coil Spark C CC
54 28 Red/White ECM relay, terminal 87a +12v See Start Circuit Chart & Instructions
55 15 Brown Ground (O2/Coil Shield) Ground
56 29 Green Ignition Switch, Terminal 15 IAC2a Base of 2n2222a
59 26 Red/Yellow TPS +5v Vref (5v)
60 5s Green/Blue Data link (Diagnostics #16) Signal Ground +12v normally, serial port requires a ground however. GND - See Diagnostics Port worksheet
64 21x Violet/Gray Datalog 325ix ABS input SPR ADC Bring C101 pin 17 to X20 #6 (ECU #64) Datalog 325ix ABS input (resistor?)
66 15 Black/Violet GND 325ix ABS input Ground or X20 #7 (ECU #66) Alternatively, GND with 1k resistor
73 22 Brown/Black TPS TPS
77 20 Gray IAT Signal MAT
78 21 Brown/Red CLT Signal CLT
87 2s White/Yellow RxD (output) Receive Data Bring Serial communication to Diagnostics Connector RxD - See Diagnostics Port worksheet
88 3s White/Violet TxD (input/output) Transmit Data TxD - See Diagnostics Port worksheet

Conversion charts and information:
General Notes: http://www.megasquirt.325ix.com/MS_to_M ... Notes.html Read these before doing anything!
Parts List: http://www.megasquirt.325ix.com/MS_to_Motronic/parts list.html Parts list required - will add MS3 related stuff, and any additional BMW parts.
Grounds http://www.megasquirt.325ix.com/MS_to_M ... rounds.htm Maps out all of the grounds for M3.3.1 and Megasquirt.
C101 to X20: http://www.megasquirt.325ix.com/MS_to_M ... o_X20.html Convert the E36 X20 to the E30 C101
E36 / E30 O2: http://www.megasquirt.325ix.com/MS_to_M ... 30_O2.html Connect a wideband O2 (such as the LC1) to the E30/E36 O2 plug.
Start Circuit http://www.megasquirt.325ix.com/MS_to_M ... rcuit.html The preferred method for switching the main relay, avoids high current through ignition switch.
Ignition Drivers: http://www.megasquirt.325ix.com/MS_to_M ... _Drivers.h. Build 6 high current coil outputs for M50 COP, or use the MS3x logic outputs for LSx coils.
Other Wiring: http://www.megasquirt.325ix.com/MS_to_M ... iring.html Explains MPG conditioner, maps E36/E46 cam sensors, SD card logging switch.
MS3 Diagnostics: http://www.megasquirt.325ix.com/MS_to_M ... s_Port.htm Bring MS3 serial communication to the Diagnostics port (completely optional).
Main Relay mod: http://www.megasquirt.325ix.com/MS_to_M ... ay_mod.jpg I'm assuming a similar mod will work with the E36 main relay (use start circuit for best results)
M30 Auto TPS: http://www.megasquirt.325ix.com/MS_to_M ... o_TPS.html For use on M20 conversions; you can also use the E36 TPS with an adapte plate.
Other:
MS3 V3.0 wiring: http://www.megasquirt.325ix.com/MS_to_M ... wiring.png Reference from the official MS3 site
MS3x wiring: http://www.megasquirt.325ix.com/MS_to_M ... wiring.png "" ""

X6000 (88 Pin):
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Re: Someone sanity check my relay diagram

Postby Yoshi » Tue Jan 24, 2012 3:00 pm

http://www.megasquirt.325ix.com/MS_to_M ... wiring.png This helped me the most

the 325ix website is still using the stock M20 so things are different. I really just wanted to check my relay output. Which, according to this is spot on.

Gonna walk through the proc real quick:
All pin 30s are hot. All pin 85s are grounds. This just simplifies wiring and there's no real harm in it.
pin 18 is really the starter relay but meh. the diagram can be wrong on that.
pin 6 (from MY reading) is a diag port power. I accidentally cut 7 too short (the real ignition source) but both wires go hot when ignition is on so I'm using this to trip the main relay.

The main relay powers the MS but also pre powers the FP relay.
When the MS trips the RP relay, the FP gets 12v to start pumping. BUT it also trips the O2 and Coil Relays. This way, the O2 and Coils only get power when the car is running (also priming). No burnt out O2 or coil packs for me!
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Re: Someone sanity check my relay diagram

Postby M20_fever » Tue Jan 24, 2012 3:03 pm

Yoshi, you wanna rename this thread to MS wiring faq or something so I can sticky it? I know im going to need it when I do my install.
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Re: Someone sanity check my relay diagram

Postby Yoshi » Tue Jan 24, 2012 3:04 pm

Meh... I guess? This is particularly MY wiring diagram. You can def do the relays a VERY different way. The prob with the relay portion of the wiring job is that there are many ways of doing it.

The rest of the wiring isn't so hard. Just match up the MS pin to the wire that goes to the sensor/output you want. Ya no?
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