In the unlikely event you see an error 30 (communication error) on your RadMini Step-Thru or your RadExpand, you can perform a connector check to ensure all connectors are secure and in good condition.
Follow the steps below to the connectors on your bike to resolve the issue. This guide uses a RadMini Step-Thru 2, but the steps will be practically identical for other RadMini Step-Thru models and for the RadExpand 5.
Tools Needed:
- Flat side cutters
- Flat head screwdriver
- A camera
- Zip ties
Note: The process for checking the connectors below will involve unplugging the connector, inspecting the inside for damage, plugging in the connector, and turning on the bike to check if the error persists while the connector is plugged in.
- Get the bike ready for maintenance. Turn off the bike, remove the battery, and press and hold MODE on the LCD display remote to discharge remaining power.
- Check the battery and battery mounting tray terminal contacts. Visually inspect the terminal contacts. If they are in good condition, reinstall the battery and turn on the bike to check if the issue is resolved. If the bike will not turn on, remove the battery, discharge remaining power, and check the next connector.
- Locate and unplug the connector, starting with the battery connector. Follow the cable from the part to the connector. Snip zip ties for easier access, then pull each side of the connector directly apart without twisting.
- Inspect the inside of the connector. If the inside of the connector is wet, dirty, or damaged, take a photo and contact Product Support. If the connector looks normal, continue to the next step.
- Plug in the connector. If the connector has no visible damage, line up the internal notch and pins (and external indicators) and press directly together without twisting.
- Check if the error persists. Reinstall the battery, turn on the bike, and check if the error persists. If the error persists, continue to the next step.
- Check the next connector. Turn off the bike, remove the battery, discharge remaining power, and check the next connector.
Repeat these steps with the three connectors listed below; the battery connector, display connector, and wiring harness connector.
Color: Black inside
Color: Silver metal connector; black inside
To unplug: Untwist the metal portion of the connector, then pull directly apart without twisting.
To reconnect: Align the internal notch and pins on the connector ends, and press directly together, without twisting. Then, twist the metal portions until the connector is secure.
Color: Black inside
To access the connector:
- Turn the handlebar to the side to create cable slack. Feed the wiring harness cable into the opening at the top of the downtube to create cable slack.
- Use a flat head screwdriver to carefully unseat the rubber grommet at the bottom of the downtube.
- Unplug, inspect, and reconnect the wiring harness connector. Gently pull the connector out of the downtube and check the connector.
- Insert the connector into the downtube. Carefully push the connector back into the downtube, reinstall the grommet, and check if the issue is resolved.
Follow the steps below to check the remaining connectors.
Note: The process for checking the connectors below will involve unplugging the connector and turning on the bike to check if the error persists while the connector is still unplugged.
- Get the bike ready for maintenance. Turn off the bike, remove the battery, and press MODE to discharge remaining power.
- Locate and unplug the connector. Follow the cable from the part to the connector. Snip zip ties for easier access, then pull each side of the connector directly apart without twisting.
- Inspect the inside of the connector. If the inside of the connector is wet, dirty, or damaged, take a photo and contact Product Support. If the connector looks normal, continue to the next step.
- Check if the error persists with the connector unplugged. Leave the connector unplugged. Reinstall the battery, turn on the bike, and check if the error persists. If the error persists, continue to the next step.
If the error is resolved when the connector is unplugged, the part may need to be replaced. Contact us for more help. - Turn off the bike and plug in the connector. If the error persists, turn off the bike, remove the battery, and discharge remaining power. If the connector has no visible damage, line up the internal notch and pins (and external indicators) and press directly together without twisting.
- Repeat steps 1 through 5 on each connector listed below until the error is resolved. Once resolved, replace zip ties and trim to be flush and smooth. Test the bike fully and ride Rad!
Color: Black inside
Color: Blue inside
Color: Blue inside
This connector only exists on bikes made in and after 2019 that also have a rear rack installed. Trace the cable from the first taillight connector to the connector plugged into the controller.
Color: Red inside
Trace the cable from the left brake lever to the connector at the front of the bike.
Color: Red inside
Trace the cable from the right brake lever to the connector at the front of the bike.
Color: Yellow inside
Trace the cable from the throttle to the connector at the front of the bike.
Color: Red inside
Trace the cable from the headlight to the connector.
Color: Yellow inside
