Electrical troubleshooting

Unresponsive throttle

1. The most common cause is a stuck left brake lever. It triggers the brake light and regen, and regen blocks the throttle signal. Release the lever.
2. If the lever is free, peel back the rubber boot at the lever’s brake light switch. If the two connectors are touching, that mimics a pulled lever. Reconnect them to the switch.
3. Open the side panel and check for a wire that has worked loose from a connector. This is rare, usually after tugging on the harness.
4. Brake fluid or other corrosive liquid spilled on the throttle can ruin it. The fix is a new throttle.

Horn or running lights dead

Check whether a connector has come apart and reattach it.

Safety

The high-voltage wiring has orange sleeving. Do not touch, remove, or replace it. After the bike is off, the cables can hold charge for up to 60 seconds. In a fire, use a Class D extinguisher on visible flame, then douse with a water-based one.

Controller fault light

The CTY2 manual says the speed controller shows a green light when there are no issues and a flashing red light for a controller or motor error. It points to the Kelly KLS-S user manual (V1.10) for the codes. The RCR V2.0 manual says only that its controller has an LED fault code. CONFIRM: Kelly KLS-S flash code table; neither Onyx manual includes it, and the RCR controller maker is not named

The CTY2 manual also lists these: if the horn or running lights fail, reseat connectors. For a wire that has worked out of a connector, it says to remove the battery tray. Support number: (310) 800-2531.