Shimano Recovering Nonresponsive Di2 Systems
Troubleshooting guide for recovering a non-responsive Di2 system
Troubleshooting guide for recovering a non-responsive Di2 system
Required Tools
1. Diagnostic Unit SM-PCE1 or SM-PCE021 and the included USB and E-TUBE cables
2. A PC running the latest version of the E-TUBE PROJECT App, available at http://e-tubeproject.shimano.com/application/
3. TL-EW02 Di2 Plug Tool
Procedure:
1. Be certain that there is a real problem and not simply an issue with settings or setup – see the standalone
Common Di2 Problems and Their Solutions document and the Dealer Manuals for your components, available at si.shimano.com
2. If this is a new or newly modified build, refer to the compatibility chart at si.shimano.com to verify that the system includes a
valid selection of components
3. Use the TL-EW02 to unplug the E-TUBE wire from the terminal on the Battery or Battery Mount for at least 30 seconds, then
reconnect it
4. Use a TL-EW02 to disconnect and reconnect every component/E-TUBE wire connection2, feeling or listening for a positive
“click” as the wire is connected
a. Check both the E-TUBE wire and the receiving port on the component for accumulated grime or corrosion
– if necessary, clean with isopropyl alcohol and let dry before reconnecting
b. If any component/E-TUBE wire combination fails to click, try again with a different E-TUBE wire that has demonstrated a
positive click on another component
i. If this pairing connects properly, replace the original E-TUBE wire
ii. If it does not connect properly, use an SM-PCE1 or SM-PCE02 to perform a Single Unit connection to the E-TUBE
PROJECT App and carry out an Error Check to determine if there is a fault in the component
5. Inspect all E-TUBE wires for signs of damage – completely severed wires are easy to spot, but also be on the lookout for
discolored or misshapen patches of wire, especially at entry/exit points from the frame and handlebars or anywhere the wire
is subjected to frequent movement
a. Replace any damaged E-TUBE wires
6. Connect the system to a computer via an SM-PCE1 or SM-PCE02 to check that all connected units are recognized and update
firmware as needed
7. If any connected components are not recognized, refer to the standalone Guide To Restoring Firmware
a. If individual components are not recognized when connecting to the complete system but are recognized when plugged in
via a single unit connection, there is a bad connection somewhere within the system
b. If all firmware bearing components – Derailleurs, Shifters, Switches, etc.– are recognized when plugged in individually
and successfully pass the E-TUBE PROJECT App Error Check, the breach is in a non-firmware bearing component – EW-
SD50 E-TUBE wires and SM-JC40 or JC41 Junction Bs are likely culprits
i. By systematically rearranging the system, the break in continuity can be isolated to an individual piece, and that piece
can then be replaced
Keep in mind as you troubleshoot that finding one problem does not mean that you have found all of the problems – if you make
one change and find that the bike is still not functioning 100% correctly, continue through the process until you have worked
through entire system
1 Though both the SM-PCE1 and SM-PCE02 are capable of performing Connection Checks and Error Checks, the SM-PCE02 has
improved Wireless troubleshooting functionality and Battery Consumption check capability that goes beyond the SM-PCE1.
Shimano highly recommends shops upgrade to the SM-PCE02.
2 Internal connections (at an SM-JC41 or an EW-RS910) can be left for last and avoided if the problem is located elsewhere, but it
is sometimes necessary to strip down the entire system.
1. Diagnostic Unit SM-PCE1 or SM-PCE021 and the included USB and E-TUBE cables
2. A PC running the latest version of the E-TUBE PROJECT App, available at http://e-tubeproject.shimano.com/application/
3. TL-EW02 Di2 Plug Tool
Procedure:
1. Be certain that there is a real problem and not simply an issue with settings or setup – see the standalone
Common Di2 Problems and Their Solutions document and the Dealer Manuals for your components, available at si.shimano.com
2. If this is a new or newly modified build, refer to the compatibility chart at si.shimano.com to verify that the system includes a
valid selection of components
3. Use the TL-EW02 to unplug the E-TUBE wire from the terminal on the Battery or Battery Mount for at least 30 seconds, then
reconnect it
4. Use a TL-EW02 to disconnect and reconnect every component/E-TUBE wire connection2, feeling or listening for a positive
“click” as the wire is connected
a. Check both the E-TUBE wire and the receiving port on the component for accumulated grime or corrosion
– if necessary, clean with isopropyl alcohol and let dry before reconnecting
b. If any component/E-TUBE wire combination fails to click, try again with a different E-TUBE wire that has demonstrated a
positive click on another component
i. If this pairing connects properly, replace the original E-TUBE wire
ii. If it does not connect properly, use an SM-PCE1 or SM-PCE02 to perform a Single Unit connection to the E-TUBE
PROJECT App and carry out an Error Check to determine if there is a fault in the component
5. Inspect all E-TUBE wires for signs of damage – completely severed wires are easy to spot, but also be on the lookout for
discolored or misshapen patches of wire, especially at entry/exit points from the frame and handlebars or anywhere the wire
is subjected to frequent movement
a. Replace any damaged E-TUBE wires
6. Connect the system to a computer via an SM-PCE1 or SM-PCE02 to check that all connected units are recognized and update
firmware as needed
7. If any connected components are not recognized, refer to the standalone Guide To Restoring Firmware
a. If individual components are not recognized when connecting to the complete system but are recognized when plugged in
via a single unit connection, there is a bad connection somewhere within the system
b. If all firmware bearing components – Derailleurs, Shifters, Switches, etc.– are recognized when plugged in individually
and successfully pass the E-TUBE PROJECT App Error Check, the breach is in a non-firmware bearing component – EW-
SD50 E-TUBE wires and SM-JC40 or JC41 Junction Bs are likely culprits
i. By systematically rearranging the system, the break in continuity can be isolated to an individual piece, and that piece
can then be replaced
Keep in mind as you troubleshoot that finding one problem does not mean that you have found all of the problems – if you make
one change and find that the bike is still not functioning 100% correctly, continue through the process until you have worked
through entire system
1 Though both the SM-PCE1 and SM-PCE02 are capable of performing Connection Checks and Error Checks, the SM-PCE02 has
improved Wireless troubleshooting functionality and Battery Consumption check capability that goes beyond the SM-PCE1.
Shimano highly recommends shops upgrade to the SM-PCE02.
2 Internal connections (at an SM-JC41 or an EW-RS910) can be left for last and avoided if the problem is located elsewhere, but it
is sometimes necessary to strip down the entire system.
