Err27 appears when truck is turned on or driving

• Cause of failure: Brake cable is disconnected or unplugged onto the controller; Controller is faulty

  Tools: allen wrench, phillips screwdriver, multimeter

  Checking method:

  1. Visual inspection: check if brake cable is disconnected or unplugged onto the controller

  2. Use a multimeter to check the brake resistance (normal resistance range: 100-200Ω)

  3. If the above causes are ruled out, most likely controller is faulty

  
  

  Required information for warranty claims:

  1. Photo of truck name plate;

  2. Photo of error code ( displayed on handle screen); 

  3. Video of brake resistance measurement;

  4. Photo of the claimed part