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Solid Red LED, No Data

Posted
Updated
Byjacky4566

If the cruise controller displays a solid red light, it typically indicates that the unit does not have a valid data connection with the motorcycle.

Recommended checks:

Verify diagnostic connection
Ensure the diagnostic connector is properly plugged in and fully seated. A loose or partially connected plug can interrupt communication.

Inspect connector pins / Bent Pins
Carefully examine the pins inside the connector for any signs of bending or damage. These pins are VERY delicate and can be easily misaligned, which may prevent proper contact. Even slight off and the male pin will slide under the female contact into the plastic.

In most cases the pins needs to be bent slightly towards the clip.

Connectors should slide together with little resistance.

Measure supply and signal voltages

If the issue persists, verify the electrical signals at the harness:

  • Disconnect the 18-pin connector.
  • Using a multimeter, measure the following pins:
    • Red → +12V supply
    • Black → Ground
    • Green/White → ~2.5V (data line reference)