| Author | Message | ||
     Buell_bert |
What does the bank angle sensor do and if it is not used does it degrade the operation? This is on a 2001 M2 Cyclone. I do not have one on the 2000 M2 and did not know the 2001 had one till looking at the wiring schematic. (I bet it helps the tires stick to the pavement better into and out of the corners, EH) Yea Right. Also what does the engine temp sensor do also as it connects to the ignition module and seems to go to the rear cylinder. Any info is appreciated. Thanks. | ||
| Outdoors |
I'm new to Buells however I read a Buell bulletin here on Badweather about the engine temp sensor being added part way through 2000 on the M2. The bulletin indicated if temp went too high that it would decrease engine performance until temp acceptable. | ||
| Bombardier |
Bank Angle Sensor - cuts ignition when you lay the bike on its side. Engine Temp Sensor - adjusts both fuel delivery and ignition timing to both front and cylinders by reading the temp of the rear cylinder. | ||
| Bluzm2 |
The temp sensor cannot adjust the fuel on the M2. Carbed.... If memory serves, it does tweak the timing if the rear head temp goes too high. Funny thing is, I think the ignition modules are the same for 1999 - 2002. Been a while since I dug into the wiring schematic for the post 2000 M2's. | ||
| Buell_bert |
I know now the bank angle sensor kills the ignition over 55 deg. but what I need to know is if it is not plugged in how will it affect the engine. HELP> | ||
| Tim |
Someone with an'01 service manual needs to chime in. In the meantime, here's my $.02. In the '03 XB service manual, there is always voltage running through the sensor. The amount of volts is increased by activation, signaling the ECM to cut off power to the fuel pump and ignition. I am guessing it was not as complicated on the M2's. It is likely an on/off switch. Unplug it. If your bike runs(and that is what you want)you should be good to go. If not you may need to jumper it, but I can't say for sure without a wiring diagram. The head temp sensor is a resistor which loses resistance as the head temp increases(thermistor?). As BluzM2 stated, at a given temp this causes the ignition module to enter a "save the engine"(skip-spark?) mode. Again, I believe this is an on/off type function, if the bike runs OK with out the sensor installed or plugged in, you are good to go. Bluz, You may be right. At first I was thinking it had to be different. So I went out and looked at my bike and confirmed with the wiring diagram (I need a new pair of glasses) for my '99 M2. There are 7 wires from the ignition module on 8 pin connector, in no particular order. 1)Black to ground 2)Violet/White to the voes vacuum switch 3)Pink to coil and (optional) tachometer To timer and pick up in nose cone: 4)Green/White 5)Red/White 6)Black/White and last but not least: 7)Gray/White which connects to Gray wire at the plug leading to relay block and speed sensor. If I'm looking at this right the Gray wire gets power from the relay block when it senses either the neutral light is on, or clutch is in and kickstand is up. If the bank angle sensor is a simple on/off switch, it could be in the gray wire line between the relay block and the ignition module. The only mystery would be the head temp sensor. How does it get into the action without it own wire to the ignition module? Would Buell add a wire to the module and not change the part#, knowing the module would work on the older models? The only "victim" would be someone using an older module on a newer bike. '01-'02 M2 owners please chime in. Does your ignition module have 8 wires? All that and no real answer for Bert. Hmmm. | ||
| Buell_bert |
Hey Tim thanks. I have the service manual but it just shows the wiring but not how it affects the module or running of the bike. And of course the trouble shooting does not explain much. | ||
| Buell_bert |
Well just for future reference the engine will not run with the Bank Angle sensor unplugged. It has 3 pins and does not seem to just be a switch. |
