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7th October 2019
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Biker
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Join Date: Jun 2019
Posts: 46 Sportster/Buell Model: Sportster 48 Sportster/Buell Year: 2019
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Right Hand Control Module issue (RHCM)
Over the weekend my 2019 Sportster 48 wouldn't start. Ran the trouble code through the FP3 and code U0142 (RHCM lost communication). I've taken apart the whole switch assembly on the right side & wires looked fine, circuit board also looked in good shape. Anyone have any troubleshooting ideas? Any way to identify the actual harness connector behind the left caddy cover by the seat? Would like to shy away from taking off the tank and seat to follow the wires down if possible. Should I just buy a new RHCM first ? Sorry for the ramble but any insight will be greatly appreciated ! ! !
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Sincerely, The Grunt | 2019 Sportster XL1200X
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7th October 2019
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XL FORUM TEAM MEMBER
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Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 7,079 Sportster/Buell Model: Sportster 883►1200 Sportster/Buell Year: 1994
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Your switches are electronically sensed by the circuit board in the RH control... Then the CANbus communicates the position of the switches to the ECM/BCM with digital communication lines...
Make sure your connectors are clean & no pins are out of place (pulled back in the housing)...
Make sure the wires are not pinched anywhere (such as the RH control housing)...
For 2018, the connection to the main harness is listed as 22B-1... I don't know if your connectors are labelled on the bike or not but this connector has 4-pins (be careful, because connector 24B (LH control) also is 4-pins with exactly the same wire colors)...
If you are not experienced with electronics, you might need to simply order a new replacement:
71500297 SWITCH MODULE (Right Hand) - $152
Or check the auction site for used ones (may be too recent for used ones)
See 2019 parts here:
http://partsfinder.onlinemicrofiche....-%20LEFT/RIGHT
This main harness diagram might be helpful:
http://partsfinder.onlinemicrofiche....-%20LEFT/RIGHT
Or this larger one:
https://oem.lenmoto.ru/img/sections/...492/150243.png
IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For FREE Sportster Tech Info from the XLForum:
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### The ride is more enjoyable to nowhere in particular! ###
Last edited by IXL2Relax; 7th October 2019 at 04:54..
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7th October 2019
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Brass Nut
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Join Date: Feb 2005
Location: Western Weald
Posts: 46,106 Sportster/Buell Model: XL1200CB Sportster/Buell Year: 2015 Other Motorcycle Model: CRF250L Other Motorcycle Year: 2017
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If it’s a 2019, it’s still in warranty; take it back to the dealer and get them to fix it.
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Folkie
Super Moderator
South East England Riders
  
There is nothing at the end of any road better than may be found beside it. Edward Thomas (1878 - 1917)
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7th October 2019
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XL FORUM TEAM MEMBER
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Join Date: Jul 2008
Posts: 9,741 Sportster/Buell Model: 1200s Sportster/Buell Year: 2001 Sportster/Buell Model #2: xlch Sportster/Buell Year #2: 1974
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there has been a couple of threads with a grip board going south so it does happen. personally i do not buy parts till i know it is the issue. of the threads that i got involved in, it turned out to be a diode failure. a factory manual will go a long way as well as the electrical manual. a schematic can be downloaded from hd's sip. i find them helpful but too small.
as was brought out, go with the warranty fix.
if you buy a new board, keep the old one as it can be repaired if you take the time and trouble.
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