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Post Info TOPIC: Having a problem - engine shuts down when I plug log box into Yosh plug


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Having a problem - engine shuts down when I plug log box into Yosh plug


I have a bike engined car (so modified harness) and Woolich log box.  Trying to set it up and when I plug both SDS and Yosh plugs in the engine shuts down.  I can start the engine with either plug in but not both - the fuel pump will not start.  I am running an auxiliary f/p supplied by the +12 Yellow/red from the bike harness  f/p plug.  If the engine is running and I connect the second plug (either SDS or Yosh) the engine shuts down and when I unplug it the fuel pump will start again.  

 

ECU is - 3292 - 15H10

112100-5872

 

Anyone able to help me diagnose this?  Thanks in advance for any info.

 

update - turns out it is just the Yosh plug 2 wires that go to the ECU from the log box that are causing the fuel pump to shut down - not the SDS



-- Edited by Tokiozulu on Sunday 18th of August 2013 03:12:20 PM



-- Edited by Tokiozulu on Sunday 18th of August 2013 04:14:48 PM

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RE: Having a problem - engine shuts down when I plug log box into Yosh plug or SDS


Seems you may have modified the harness to mess up something in the harness. Are there any trouble codes present?
Be sure teh interface selector switch is in the proper position in order to start the engine. Which interface style do you have?

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Sportbikeryder- thanks for your thoughts. I have Woolich logbox and yes data monitor mode (amber led) was selected. Unfortunately I did not mod the harness myself and no drawing so I'm a little in the dark on that. I did just buy on fleabay a gauge set but have not had time to get back over to the shop and try them out and see what fault codes there may be. Hope to do that tomorrow. I did have a problem when installing the interface harness into the ecu plug and ended up installing a new ecu plug I got from digikey. I took photos of the original plug wiring before transferring the wires. I'll double triple check that to make sure I didn't mix anything up.

I'll let you what I find but if anyone else has any ideas in the mean time please advise. Thanks.

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Had time to triple check all the wiring to the ECU and logbox interface wiring.  All appears good.  I did however narrow the problem down to the Yosh plug wires that go to pins 25 and 28 of the ECU.  If these wires are connected the fuel pump will not run.  The motor will turn over on the starter and ignition is powered but no f/p.  Hoping someone will have an idea of where I should start looking for the problem.



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Hi, are you sure you have the 2 wire harness that goes to pins 25 and 28 installed around the right way? please double check the installation instructions http://www.woolichracing.com/Documents/Bike_Harness_Installation_Suzuki_Type_4.pdf



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Hi Justin -  yes I double checked these connections.  termination images attached

Any ideas what could be causing f/p to shut down when these wires are connected.  The f/p will start again and run for a few seconds when I disconnect.  



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Does it start if the interface is connected but NOT in engine data mode?

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sportbikeryder wrote:

Does it start if the interface is connected but NOT in engine data mode?


 No.  In any mode the fuel pump will not start but the engine will turn over on starter.



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RE: Having a problem - engine shuts down when I plug log box into Yosh plug


The 2 wire harness looks ok, can you send me pics of the main harness so i can check the pin out? Does the FI light come on when it wont start?



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jkwool wrote:

The 2 wire harness looks ok, can you send me pics of the main harness so i can check the pin out? Does the FI light come on when it wont start?


 Here are pics of terminationsat ecu end.  Let me know if you need any other images.  I don't believe I get the FI light when it stops but will check again later today.  

I ran the engine up to  temp tonight, stopping via the Yosh/SDS plugs a few times along the way.  I had edited my original post this am to reflect what I had found in that the Yosh plug seemed to be what was stopping the fuel pp.  Or more specifically the 2 wires going to pins 25 and 28.   Well tonight I experienced what I thought I had the first time - I had the Yosh plug in and the engine was still running and did not shut down till I plugged in the SDS.  It was not like this the other day when I isolated those 2 ECU pins.  This is weird.  After the engine shut down I unplugged the SDS and then the Yosh plug.  The fuel pump started to run again for a few seconds as soon as the Yosh plug was  removed from the harness.

 

I had the gauges hooked up and the only fault code? I got was CHEC --- after the engine had shut down.



-- Edited by Tokiozulu on Tuesday 20th of August 2013 12:46:51 AM

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Does this bike have the stock ignition key and switch and immobilizer if applicable? What is the part number of the ECU?

I would trace out the wiring since you noted you did not do the wiring modifications and you did not have a diagram.

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This thread has a pin-out for the ECU.

 

http://ecuhacking.activeboard.com/forum.spark?aBID=99460&p=3&topicID=25056186



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sportbikeryder wrote:

Does this bike have the stock ignition key and switch and immobilizer if applicable? What is the part number of the ECU?

I would trace out the wiring since you noted you did not do the wiring modifications and you did not have a diagram.


 P/N for ECU is - 

ECU is - 3292 - 15H10

112100-5872

The modified harness is in a car.  The handlebar controls and lighting circuits have been deleted from the harness.  So no immobilizer, key switch or kill sw.  I have a one button push start (Nissan GTR button) that works via an ISIS multiplex system.   Essentially you push the start button and power is applied to ignition and fuel pump starts.  A second or 2 later - with the start button still depressed - the starter turns the motor over.  When running the button is released.  Pretty much the same as the bike without key.

Thanks for the pin out link.  I have actually been using these diagrams along with the color PDF of the wiring that is out there to check all the ecu terminations.

 

 



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I tested again today seeing as the SDS plug came back into the equation. I connected the log box to the ecu only with the blue and brown wires that go to pins 25 and 28 and I could start the engine. I then connected the SDS wires one by one. When either the green or orange wires were attached the fuel pump would not start. SDS ground and power from what I see on the drawing.

Does that tell us anything, I wonder?

According to the guy that modded the harness, it's as per the original diagram with just the non essentials for the car deleted. The engine runs and car drives like a rocket - I just can't map it.



-- Edited by Tokiozulu on Tuesday 20th of August 2013 05:13:32 PM

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to log data with the Log Box you only need to connect to the SDS plug, what happens if you only connect to the SDS plug, are you able to start the engine? what do the LED's on the log box do? Also to flash the ECU you only need to connect the Yosh box plug, are you able to read/write with just the yosh box plug connected?



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jkwool wrote:

to log data with the Log Box you only need to connect to the SDS plug, what happens if you only connect to the SDS plug, are you able to start the engine? what do the LED's on the log box do? Also to flash the ECU you only need to connect the Yosh box plug, are you able to read/write with just the yosh box plug connected?


 Yes the engine will start with only SDS and when the toggle is in log mode - center - I get the 2 green LEDs.  If i try to log i get the "modem failed to initialize .... error.   With Yosh only connected and toggle in flash position - I get the 2 green and 1 red led.   When I try to read ecu I get the " interface is not on or......." Error.



-- Edited by Tokiozulu on Wednesday 21st of August 2013 04:31:04 PM

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Ok something does not seem right with the Log Box, please send back to Woolich Racing so we can test, repair or replace it. Use the contact us form on our web site to send me a message if you dont still have our shipping address.

Cheers



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jkwool wrote:

Ok something does not seem right with the Log Box, please send back to Woolich Racing so we can test, repair or replace it. Use the contact us form on our web site to send me a message if you dont still have our shipping address.

Cheers


 Thanks Justin.  I actually sent  it to Greg yesterday after my last test.



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Ok no problems, i have just been speaking with Greg and he will test and replace as required.



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Just wanted to update - the replacement log box did the trick and I am now able to monitor engine data and will be logging soon.   Thanks to all.



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