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  #21  
Old 22nd April 2019
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Quote:
Originally Posted by IXL2Relax View Post
Should have no affect on Idle.
+1

The serial data connection to the TSM is to compute distance traveled for auto-cancel. The only TSM function other than turn signals is TSM position 9 output to starter relay.

Debris on VSS may cause erratic speedo.
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  #22  
Old 22nd April 2019
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Ixl2relax

Yes it is right there where you said. Thanks

SportsterDoc Thanks for adding to the elimination process. I will now check all the wiring to the CKP.

I was checking spark by cranking the bike to start .
both ignition module fire after about 10 revolution.
There seems to be a greater delay before it fires.
I'm going to check it again just to make sure that is what I saw.

I'll report later.
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  #23  
Old 23rd April 2019
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Quote:
Originally Posted by Grumpy-Biker View Post
I was checking spark by cranking the bike to start .
both ignition module fire after about 10 revolution.
There seems to be a greater delay before it fires.
I'm going to check it again just to make sure that is what I saw.
This might be relavent:
http://sportsterpedia.com/doku.php/t...ynchronization

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  #24  
Old 24th April 2019
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Hello So the wire on the CKP are good, i have continuity from under the bit to the ignition connector.
Wires from connector to the plug for the coil are good.
I'm going to start checking the other connections.

Ixl2 relax thank for that Info I going to review it carefully.

how long should a map sensor last??/
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  #25  
Old 24th April 2019
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Quote:
Originally Posted by Grumpy-Biker View Post
How long should a map sensor last??/


Were you able to verify whether the STOCK ICM causes the engine to run differently than the DSPT?

Your previous post seemed to indicate that both modules ran the engine the same way... That both were OK and did not produce an error code... Can you confirm?

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  #26  
Old 24th April 2019
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Hi Ixl2relax:

The bike starts with both stock Icm and Dspt . DSPT is alway giving me the U1255 code. No code with stock.
Next step is a test ride .

Good new the TSM works. I had taken it out of the bracket and it was laying on its side to cleaning the connection. I could not get the engine to crank to check fire. As soon put it back in place it turned over.
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  #27  
Old 29th April 2019
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Hello

The battery was not charging any higher than 12.6 after 12 hours on the charger.
12.4 v across when off the charger for about 1/2 hour.
Shows about 9.5v when cranking.
I was thinking that may be the low battery could cause or be part of the problem.
I would need a new battery regardless.
So I got a new one Voltage read 12.8v across and 13.5 on the charger.

So I did a 3 minute run today with the DSPT came up with codes
U1301 Serial Data Open/High Carb
U1301 Serial Data Open/High Instruments
U1301 Serial Data Open/High TSM/TSSM
and
U1255 Serial Data Error
U1255 Serial Data Error/Missing Message Instruments
U1255 Serial Data Error/Missing Message TSM/TSSM

Speedo works fine and the signal lights cancel

Looks like the data is sometimes not getting to where it is needed.
I did not find any interruptions in the wires I checked.

Cleared the codes and went for a one hour ride and the codes did not return.
bike ran fine.

If work and obligations are not to high this week I will test again and check for codes.
I will also test the Old 883 module.
Sorry it took me so long to get back.

thx. J
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Old 29th April 2019
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Looks like you're moving in the right direction - Hopefully the Serial Data Errors will settle down...

The three devices that communicate are the ICM, the TSM & the Speedo... You might want to check the connection at the Speedo (since it seems you did the ICM & the TSM)...

Low voltage can sometimes cause strange problems...

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  #29  
Old 1st May 2019
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Hi
Yes I did all the connections on the CKP VSS Map sensor, ICM and Tsm.

I installed the apes and did internal wiring about four years ago.
It was my first experience of the sort.
I could have induce a weak link that now causes a short due to vibration.
I will certainly check around.
I will strip the bars down and redo the work if see some signs.
I'm also going to double check the ignition (Key) switch.
Thx.
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  #30  
Old 7th May 2019
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hi
Over the weekend I started the bike again before deciding if i should risk going for a riding. The bike was not starting quick. checked the codes DSPT gave U1255 again. The had disappeared last weekend but now there back . So I installed the 883 ignition.
The biker started quicker. I ran it a little bit short run. It gave not codes. I ran it again sunday for a little bit no codes. Also seems to pull stronger with the 883 ignition but I didn't want to push it since i'm still in the brake in process.
I check the compression today 210 PSI in front Cylinder 220 PSI in the rear.

So I put an X on the DSPT and I ordered a TC88. So no more riding till it comes in.
I will query for a mild map .
I'm still going to check the wiring on the handlebars a little later this week.

See ya later.
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