Difficult no start issue
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Novice
Joined: Sep 2019
Posts: 22
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From: MD
To be honest I have not solved it yet it's sitting in my garage and I've had too much other stuff to do to get it to the dealer. I can ground the number for wire coming out of the system's relay and it'll start and run but that's not really the way I wanted to fix it LOL
Tourer
Joined: Feb 2015
Posts: 268
Likes: 36
From: Athens Greece
To be honest I have not solved it yet it's sitting in my garage and I've had too much other stuff to do to get it to the dealer. I can ground the number for wire coming out of the system's relay and it'll start and run but that's not really the way I wanted to fix it LOL
which wire are you grounding? color?
i just want to check the loop on that wire to see if its getting a command somewhere in the circuit from the ECU or TSSM for further confirmation
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Novice
Joined: Sep 2019
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From: MD
Ground to the - coil side of the system relay that is green (I think) but it goes to terminal 4 on the ecm. The system relay is receiving power the ecm is not switching ground to turn it on...
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Novice
Joined: Sep 2019
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From: MD
And please even if you don't find anything let me know before I take it to a dealer ... I I've been researching this for good amount of time I'm kind of running out of options so thanks for all your response
Tourer
Joined: Feb 2015
Posts: 268
Likes: 36
From: Athens Greece
do you have a wiring diagram?
if not, PM me an email address
Y/G is power from system relay,
Y/B neg pulses fron ecu rear coil
B/O neg pulse from ecu front coil
G/B is the ION sense return to ecu..
heres my take on this from exp..
the serial data wire , #5 on ECU, GREEN/PURPLE from the TSSM sends an OK command (no alarm condition) to the ECU allowing the #4 wire system relay power up, FUEL and IGN, since the TSSM sees a fault it wont allow the bike to start, jumping the system relay bypasses pretty much all electronics and will trigger a xmas tree of MILS
if not, PM me an email address
Y/G is power from system relay,
Y/B neg pulses fron ecu rear coil
B/O neg pulse from ecu front coil
G/B is the ION sense return to ecu..
heres my take on this from exp..
the serial data wire , #5 on ECU, GREEN/PURPLE from the TSSM sends an OK command (no alarm condition) to the ECU allowing the #4 wire system relay power up, FUEL and IGN, since the TSSM sees a fault it wont allow the bike to start, jumping the system relay bypasses pretty much all electronics and will trigger a xmas tree of MILS
Last edited by ghost183; Nov 29, 2019 at 04:25 PM.
Thread Starter
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Novice
Joined: Sep 2019
Posts: 22
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From: MD
do you have a wiring diagram?
if not, PM me an email address
Y/G is power from system relay,
Y/B neg pulses fron ecu rear coil
B/O neg pulse from ecu front coil
G/B is the ION sense return to ecu..
heres my take on this from exp..
the serial data wire , #5 on ECU, GREEN/PURPLE from the TSSM sends an OK command (no alarm condition) to the ECU allowing the #4 wire system relay power up, FUEL and IGN, since the TSSM sees a fault it wont allow the bike to start, jumping the system relay bypasses pretty much all electronics and will trigger a xmas tree of MILS
if not, PM me an email address
Y/G is power from system relay,
Y/B neg pulses fron ecu rear coil
B/O neg pulse from ecu front coil
G/B is the ION sense return to ecu..
heres my take on this from exp..
the serial data wire , #5 on ECU, GREEN/PURPLE from the TSSM sends an OK command (no alarm condition) to the ECU allowing the #4 wire system relay power up, FUEL and IGN, since the TSSM sees a fault it wont allow the bike to start, jumping the system relay bypasses pretty much all electronics and will trigger a xmas tree of MILS
Tourer
Joined: Feb 2015
Posts: 268
Likes: 36
From: Athens Greece
it is my understanding based on visual data shown in the software that the TSSM only sends data, doesnt receive, its "trigger alarm" sgnal is triggered by an actual 12v command from the bikes wiring, i.e. "ignition on while armed" would be the only trigger alrm signal input to the TSSM .. the TSSM has the shock and tilt sensor in it
this is why the TSSM can be disabled while still connected, but no more alarm system
which by the way you might still have the option to do if its still getting power and ALL lights work, once the TS and hazards stop thats it.. the TSSM cant be accessed anymore
i can email you a wiring diagram so you can further trace wiring to be sure.. in my case i was pretty set that the tssm needed replacing.. after that i just toyed with the system to learn my way around it
Thread Starter
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Novice
Joined: Sep 2019
Posts: 22
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From: MD
unfortunately no, thats a 5v circuit that sends data.. sometimes shows slight pulsing on a multimeter which would be safe to assume is indicating that data being sent, but no way to actual know what that data is unless you have a diag reader specifically to read and access TSSM throughput.. hence harley davidson dealer or DIAG4BIKE which is what i currently own
it is my understanding based on visual data shown in the software that the TSSM only sends data, doesnt receive, its "trigger alarm" sgnal is triggered by an actual 12v command from the bikes wiring, i.e. "ignition on while armed" would be the only trigger alrm signal input to the TSSM .. the TSSM has the shock and tilt sensor in it
this is why the TSSM can be disabled while still connected, but no more alarm system
which by the way you might still have the option to do if its still getting power and ALL lights work, once the TS and hazards stop thats it.. the TSSM cant be accessed anymore
i can email you a wiring diagram so you can further trace wiring to be sure.. in my case i was pretty set that the tssm needed replacing.. after that i just toyed with the system to learn my way around it
it is my understanding based on visual data shown in the software that the TSSM only sends data, doesnt receive, its "trigger alarm" sgnal is triggered by an actual 12v command from the bikes wiring, i.e. "ignition on while armed" would be the only trigger alrm signal input to the TSSM .. the TSSM has the shock and tilt sensor in it
this is why the TSSM can be disabled while still connected, but no more alarm system
which by the way you might still have the option to do if its still getting power and ALL lights work, once the TS and hazards stop thats it.. the TSSM cant be accessed anymore
i can email you a wiring diagram so you can further trace wiring to be sure.. in my case i was pretty set that the tssm needed replacing.. after that i just toyed with the system to learn my way around it
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Thread Starter
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Novice
Joined: Sep 2019
Posts: 22
Likes: 0
From: MD
It would certainly be good to have the correct wiring diagram the diag4bike can that program also I can probably get another tssm from a dealer friend or an exam if needed I just don't really like my bike leaving my reach . My email is. graffixx2000@gmail.com. Thanks for the help and if you find something good or just want to chat without typing. Give me call or text 4432508189.... Jim
Novice
Joined: Dec 2019
Posts: 18
Likes: 1
From: Australia
Hey brother did you have any luck, I just purchased a 2013 forty eight with exactly the same problem, when I got it home I found the wiring had been hacked and found the fuse block was mossing the system relay and fuel pump was jumped with a fuse, would start that way but wouldnt stop priming , but the problem sounds exactly the same as yours