Hi guys,
Just wondering what the Body 9 and body 13 pins on the ECU do. They're connected to pins 18 and 8 of the gauges, but otherwise go nowhere else...
Cheers,
Suzy
the wiring diagram for my s4 says
Body9 tach out
Body13 warn lamp
maybe thats the ecu fault light ?
i remember seeing in the past when researching gauge clusters that someone changed their gauges and they had a pinout diagram of the gauge connector
there will prob be some more info on the subject if you have a search around
Thanks for that. It confirms my suspicions that there's nothing magical about the comms between the ECU and gauges - all you need to do is give the gauges a tach signal, and they're happy. I guess the CEL light drive is optional.
Here's what I have so far, from scouring the wiring diagrams of the 695, S2R 800, S2R 1000, 999, & 998.
Although each connector has 38 pins, only 20 from each are actually used (at least on those ducs that I checked). This is cool, because it means that the ultra-weird connectors used for the ECU can be replaced with much more manageable ones. My preference at the moment is 2 x 23 pin Ampseal connectors.
Alas there's more to be driven and sensed than pins available on a standard microsquirt.
The wiring colous are from the 695 diagram - I didn't check whether the wiring colours for other models are the same.
Body Colour Function
1 R/Bk Solenoid drive - active low.
4 R/B +12V from fuse 4 - 5A ECU power.
6 Bn/Bk Injector relay coil - active low.
7 O/B Keylock - to pin 15 of gauges.
8 Gr/Bk Headlight relay coil - active low.
9 G Tach out - to pin 18 of gauges
11 Bk/B O2 sensor - pin 4 - heat
13 B/Y Warning lamp out - to pin 8 of gauges
14 G/Bk Fan drive - fan on when grounded (999 only)
16 O/W Diagnostic connector pin 3
17 R/G Keysense - Switched +12V - on when keyswitch is in on position
20 R/W MPXCAN+ (999 only)
22 Lb O2 sensor pin 1
24 Gr/G Hall speed sensor pin 2, Gauges pin 17
27 W/B Engine stop switch - +12V when ign is on and stop switch is on.
28 R/O Starter button - pulled to ground when button pressed
29 R/Bk MPXCAN- (999)
32 G/B O2 sensor pin 2
33 B/W Clutch switch - pulls to ground
38 W/R Side stand switch pin 2 - pulls to ground
Engine Colour Function
3 O TPS pot pin C - drive
5 W Oil temp sensor pin 1
9 W Idle stepper C
10 Gr/G Vertical coil drive
13 Gr/Bk Air temp/pres sensor pin 4
14 Gr/R Air temp/pres sensor pin 2
17 LB Idle stepper A
18 Gr Idle stepper D
19 V Idle stepper B
20 Bk/G TPS pot pin A - sensor ground
22 Bn/R Air temp/pres sensor pin 3 - sensor supply
23 Y/G Neutral switch - pulls to ground
25 sc.1B Crank sensor
28 P/Y Horizontal injector - active low
29 Bk/V Sensor Ground - output from ECU
32 Bn/G TPS pot pin B - wiper
34 field Crank sensor shield
35 sc.1A Crank sensor
37 G/Y Vertical injector - active low
38 Gr/B Horizontal coil drive
Is microsquirt fuel only or does it do fuel ignition like the MS2 board? Im guessing your looking to run the bike on a microsquirt ECU? I would not worry to much about the pin outs of the factory ECU compaired to what the MS board has available as they use different methods for determining fuel demand. I think there was someone who ran a 907ie on megasquirt on the msruns board awhile back. Other than the crank sensor setup & the maps everything else should be the same for the install.