Tssm trouble shooting
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From: Santa Maria ca
Tssm trouble shooting
Posted in the softail section but didn’t get much help
Hi have a 08 fatboy that’s was sitting for a couple months battery was dead tried to jump it got one crank then nothing. Went to buy a new battery, old one was not holding a charge. Replaced the battery went to turn it on and nothing. lights come on fuel pump primes just doesn’t turn over, no clicking or anything.
replaced both batteries including fob
I took the starter relay off (also replaced) and jumped 30 and 87 got the bike to turn over and run but shut off.
Not sure if it’s the starter button on the bars or what. one thing I did notice is my rear turn signals are not turning on not sure why or how to check why they wouldn’t be working iv been trying to research how to check no luck any advice would be appreciated.
now After reading and researching I believe I fried my tssm is there a way to test it?
Hi have a 08 fatboy that’s was sitting for a couple months battery was dead tried to jump it got one crank then nothing. Went to buy a new battery, old one was not holding a charge. Replaced the battery went to turn it on and nothing. lights come on fuel pump primes just doesn’t turn over, no clicking or anything.
replaced both batteries including fob
I took the starter relay off (also replaced) and jumped 30 and 87 got the bike to turn over and run but shut off.
Not sure if it’s the starter button on the bars or what. one thing I did notice is my rear turn signals are not turning on not sure why or how to check why they wouldn’t be working iv been trying to research how to check no luck any advice would be appreciated.
now After reading and researching I believe I fried my tssm is there a way to test it?
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From: South Carolina
Did the starter motor crank the engine over ok?
Did the engine start?
We are not looking over your shoulder here, so we need clear descriptions of what is going on...
On the starter relay: find pin 85, put a jumper wire in there and ground the other end.
Press the start button (ignition switch on), what happens?
Did the engine start?
We are not looking over your shoulder here, so we need clear descriptions of what is going on...
On the starter relay: find pin 85, put a jumper wire in there and ground the other end.
Press the start button (ignition switch on), what happens?
Last edited by Dan89FLSTC; Jul 21, 2021 at 04:58 PM.
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Joined: Nov 2018
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Likes: 8
From: Santa Maria ca
Did the starter motor crank the engine over ok?
Did the engine start?
We are not looking over your shoulder here, so we need clear descriptions of what is going on...
On the starter relay: find pin 85, put a jumper wire in there and ground the other end.
Try cranking, what happens?
Did the engine start?
We are not looking over your shoulder here, so we need clear descriptions of what is going on...
On the starter relay: find pin 85, put a jumper wire in there and ground the other end.
Try cranking, what happens?
just tried and nothing
Last edited by Fabian08flstf; Jul 21, 2021 at 05:07 PM.
Seasoned HDF Member
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From: South Carolina
Pin 85 on the starter relay is the wire that goes to ground.
But the TSSM controls that ground, it decides whether or not to ground that wire, depending on security system.
You need to put a wire into that connector that will contact the pin, and ground that wire, that will give you a ground no matter what the TSSM says...
But the TSSM controls that ground, it decides whether or not to ground that wire, depending on security system.
You need to put a wire into that connector that will contact the pin, and ground that wire, that will give you a ground no matter what the TSSM says...
Thread Starter
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Joined: Nov 2018
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From: Santa Maria ca
Pin 85 on the starter relay is the wire that goes to ground.
But the TSSM controls that ground, it decides whether or not to ground that wire, depending on security system.
You need to put a wire into that connector that will contact the pin, and ground that wire, that will give you a ground no matter what the TSSM says...
But the TSSM controls that ground, it decides whether or not to ground that wire, depending on security system.
You need to put a wire into that connector that will contact the pin, and ground that wire, that will give you a ground no matter what the TSSM says...
Seasoned HDF Member
Joined: May 2008
Posts: 21,026
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From: South Carolina
Yeah, grounding pin 86 would fry the ignition fuse...
The fact that the starter cranks the engine with pin 85 grounded tells us that for some reason, the TSSM does not want the starter to crank the engine...
I don`t think the TSSM is causing the engine to shut off after it starts, but I am not an expert on fuel injection and electronic controls, not by a long shot....
The fact that the starter cranks the engine with pin 85 grounded tells us that for some reason, the TSSM does not want the starter to crank the engine...
I don`t think the TSSM is causing the engine to shut off after it starts, but I am not an expert on fuel injection and electronic controls, not by a long shot....
Last edited by Dan89FLSTC; Jul 21, 2021 at 05:26 PM.
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From: Santa Maria ca
Last edited by Fabian08flstf; Jul 21, 2021 at 05:31 PM.
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Not talking about the running lights in the front turn signal assembly...
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Thread Starter
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Joined: Nov 2018
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From: Santa Maria ca
Seasoned HDF Member
Joined: May 2008
Posts: 21,026
Likes: 12,548
From: South Carolina
Unplug the connector from the TSSM.
Turn ignition switch on.
Read voltage at pin 7 on the connector, it should read system voltage when the right turn signal button is pressed (White/Brown wire).
Read voltage at pin 8 on the connector, it should read system voltage when the left turn signal button is pressed (White/Violet wire).
Turn ignition switch on.
Read voltage at pin 7 on the connector, it should read system voltage when the right turn signal button is pressed (White/Brown wire).
Read voltage at pin 8 on the connector, it should read system voltage when the left turn signal button is pressed (White/Violet wire).