The CB1100 Community Forum

CB1100 2018 Neutral problem,green N light didnt lit up ,yellow check engine light on.gear indicator indicate -.bike can be start up but when put on first gear engine cutted off.

clutch switch works,side stand works,neutral switch works.what cause the engine cutted off?

Does anyone have service manual that i can ask for copy? thanks

Hi, no idea but this has got to be a straight warranty issue rather than trying any fix yourself. Go to your dealer.

Don’t know about the neutral light, but the MIL being on is not good. Like Jrfo said, take it to the dealer and let them read the code.

In the meantime, cutting off when put in gear sounds like the sidestand switch. Look at this post and see if it helps any: http://cb1100forum.com/forum/showthread.php?tid=14702

There aren’t any on-line service manuals. You have to buy one.

If it were my bike:
* first, I would retrieve DTC and act accordingly
** 2nd, I would check side stand SWITCH for proper adjustment and its resistance/conductivity, while operating side stand few times, as well as for short to ground: wire and side stand, clutch and neutral switches (all 3).. and diode to neutral switch as per manual p. 5-11


Courtesy of MAX

This may help as well, again courtesy of MAX
http://cb1100forum.com/forum/showthread....#pid248222

I assume that: side stand, clutch and neutral switch diagrams of 2018 = 2013 & 2014. You need electrical knowledge, multimeter (or test light) and jumper wire.

Hello Rocketz,

Would you please clarify some points to help with the diagnosis?

The yellow check engine light comes on when the key is turned on, but does it go out after the engine is running?

Also, when you started the engine, you pulled the clutch lever in?

(09-10-2019, 01:55 AM)rocketz_imp Wrote: [ -> ]CB1100 2018 Neutral problem,green N light didnt lit up ,yellow check engine light on.gear indicator indicate -.bike can be start up but when put on first gear engine cutted off.

clutch switch works,side stand works,neutral switch works.what cause the engine cutted off?

Does anyone have service manual that i can ask for copy? thanks

Hi rocketz,
1 how did this problem start and
2 how did you find out that the neutral switch WORKS
3 it sounds as if the sidestand switch is not working , check for loose bolt on the switch and put sidestand in and out several times to re-activate the switch.

An inconvenient circumstance for a maiden Forum opener.

Nevertheless, some helpful responses from members. Hopefully the issue is something simple.

hello again,sorry my late response.i take video of the bike.N never appear.this video taken with no side stand open.ready to run condition.

https://www.youtube.com/watch?v=ya9ezPhQCXw

(09-10-2019, 08:31 AM)pekingduck_imp Wrote: [ -> ]Hello Rocketz,

Would you please clarify some points to help with the diagnosis?

The yellow check engine light comes on when the key is turned on, but does it go out after the engine is running?

Also, when you started the engine, you pulled the clutch lever in?

hi Pekingduck,below is my vid on youtube.thank you.

(09-10-2019, 09:01 AM)max_imp Wrote: [ -> ]

(09-10-2019, 01:55 AM)rocketz_imp Wrote: [ -> ]CB1100 2018 Neutral problem,green N light didnt lit up ,yellow check engine light on.gear indicator indicate -.bike can be start up but when put on first gear engine cutted off.

clutch switch works,side stand works,neutral switch works.what cause the engine cutted off?

Does anyone have service manual that i can ask for copy? thanks

Hi rocketz,
1 how did this problem start and
2 how did you find out that the neutral switch WORKS
3 it sounds as if the sidestand switch is not working , check for loose bolt on the switch and put sidestand in and out several times to re-activate the switch.

Hi rocketz,
1 how did this problem start and
2 how did you find out that the neutral switch WORKS
3 it sounds as if the sidestand switch is not working , check for loose bolt on the switch and put sidestand in and out several times to re-activate the switch.
hi Maxx,i appreciate for your kind help.the bike is brand new.never run before.i had opened the front sprocket cover on left.i try to use multimeter to test neutral switch.seems work for me.pls advise.for sidestand i checked also using multimeter and it works.

please check my video : https://www.youtube.com/watch?v=ya9ezPhQCXw

(09-10-2019, 12:16 PM)GoldOxide_imp Wrote: [ -> ]An inconvenient circumstance for a maiden Forum opener.

Nevertheless, some helpful responses from members. Hopefully the issue is something simple.

thanks goldoxide.sorry for my bad english.

That's what mine does when I forget to put the side stand up. Surely that switch has to be dodgy?

Hi rocketz, your problem with the neutral switch is that the neutral switch / oil pressure sensor 2 pole connector is unplugged.



This connector is behind the right black plastic cover that is over the injectors/throttle body, has a green and a blue wire connecting to an identical pair of wires.
to remove this cover you have to undo the m8/12 mm head bolt that secures the fueltank, lift the tank CAREFULLY just enough so the little plastic screw that holds the black plastic cover in place can be unscrewed, pulled out ( it's a pushpin clip ) and the cover removed, the connector is located behind the no4 injector and 4 pole iacv connectors and inside a black plastic shroud.
You can also follow the oil pressure switch ( under the engine block just behind the oil pan ) green wire and see where it connects to the wiring loom , you have likely to remove the right hand sidecover to do this.

The engine warning light is on because the e.c.u. cannot detect the ( closed ) contacts of the oil pressure switch in the startup check sequence of the e.c.u.

This screenshot shows u pointing at the "engine warning light" with the engine off, at this point the oil pressure light MUST be on until the oil pump opens the contacts of the oil pressure switch when the engine runs.



The oil pressure light is on in the next screenshot as part of the e.c.u. startup sequence checks, so the light itself is working but it does not stay on because the oil pressure switch is not connected.


The common point for both faults is this 2 pole connector behind the no4 injector.

This could solve the engine cutting out when it is put in gear, i think the e.c.u.is programmed trying to protect the engine, if not the sidestand switch has to be checked for correct operation per this electrical diagram and the connector for the sidestand switch can be located behind the left side cover as the middle connector of three, it has two green wires.'
http://cb1100forum.com/forum/showthread....#pid248214

Se how useful this video was? thanks for posting.