Help Needed: Giant 2021 Trance E+ Dead After Bending Pin

slider

New Member
Sep 20, 2024
11
6
Sweden
Hi everyone,

I'm new to the forum and recently bought a 2021 Giant Trance E+ second-hand. I wanted to add a EVO SG display to the bike, but while connecting it, I accidentally bent one of the pins on the cable which is connnecting to the ridecontrol switch on the steeringwheel. I carefully bent the pin back into place, but now the bike is completely dead—no power, nothing, when i connect the charger it says no battery but the battery is fully charged

Has anyone experienced something similar or have any idea what the issue might be? I'm hoping it's something I can fix without too much trouble. Any advice or guidance would be greatly appreciated!

Thanks in advance!
 

Astro66

Member
May 24, 2024
220
404
Sydney Australia
You need to determine if something is shorting out, or just missing a connection.

Unplug all devices on the handlebar and plug in the charger. If the charger now sees the battery. There is a short circuit in the connections to one of your handlebar devices. If the charger still sees no battery, then there is a missing connection to your handlebar devices.

Once you have determined whether it's a short circuit or a broken connection. You'll need to find the problem using a multimeter.

I'm an electronic technician. I hope this helps.
 

slider

New Member
Sep 20, 2024
11
6
Sweden
@Astro66 did remove the display connection and the charger led did the following squense "blink 1 time red - green - red " and thats it ..makes any sense ( no display was connected ordered now a new ride control )
 

Astro66

Member
May 24, 2024
220
404
Sydney Australia
@Astro66 did remove the display connection and the charger led did the following squense "blink 1 time red - green - red " and thats it ..makes any sense ( no display was connected ordered now a new ride control )
I'm not familiar with the lights on the Giant charger. But if the charger lights display correctly when ride control is unplugged. Then it's quite possible the ride control switches are the problem. But it could also be the cables. Part swapping is the only way to work that out.

But it's difficult to make a diagnosis remotely, which is why you would get so few replies.
 

slider

New Member
Sep 20, 2024
11
6
Sweden
It actually didn’t matter if the ride control is connected or not - sequence is always red green red, not sure what this means but before it always blinked green when the charger was connected
 

jeanmarc

Well-known member
Mar 2, 2021
439
430
Canada
Blinking green is the correct behaviour when charging. Sorry to hear you're having trouble, is there not a local Giant dealer that could help?
 

slider

New Member
Sep 20, 2024
11
6
Sweden
It actually didn’t matter if the ride control is connected or not - sequence is always red green red, not sure what this means but before it always blinked green when the charger was connected
Not really no - there is a shop 50km from me will contact them 🥲
 

jeanmarc

Well-known member
Mar 2, 2021
439
430
Canada
Well, Giant is not a direct to consumer brand and they do support a network of retailers that should (usually) be trained on their products. The net value for the retailer, even if you didn’t buy the bike there, is most likely you will end up buying some parts from them and probably be one more happy customer shopping there... 😊
 

slider

New Member
Sep 20, 2024
11
6
Sweden
Nope just my own DYI - one more question previously the bike was " unlocked speed wise " how is this again actived ? now it just goes to 25km with support.
 

jeanmarc

Well-known member
Mar 2, 2021
439
430
Canada
I don't think this bike can be unlocked for speed without voiding warranty... May be different for Europe?
 

DaveMatthews

Well-known member
Aug 12, 2018
475
322
Vancouver, B.C. Canada
Nope just my own DYI - one more question previously the bike was " unlocked speed wise " how is this again actived ? now it just goes to 25km with support.
I have heard numerous horror stories of Giant/Yamaha motors needing replacement after a short time using an unlocker.
This on recent bikes/firmware.
I have a 2021 and definitely will not try my luck.
YMMV...
 

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