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51180-INS-RE
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PAGE 8
TROUBLESHOOTING GUIDE
Condition
Problem Cause
Possible Solution
LED does not light
No power to brake controller,
no ground on vehicle 7-way
Check vehicle power and ground wiring
Trailer mode not activated for vehicle
Vehicle requires trailer to activate 7-way power
Unable to connect to mobile devices
No power to brake controller,
no ground on vehicle 7-way
Invalid Bluetooth PIN
Check Echo LED status for power
Input PIN from label or quick reference card
Enable Bluetooth or grant permissions
Check smartphone compatibility
Solid red LED for more than 10 seconds
Hardware fault
Contact CURT Product Support
Flashing red LED
Contamination in trailer plug socket
Check for clean and dry trailer plug
Short in trailer brake wiring
Locate and correct short
Accelerometer error
Unplug the brake controller and plug it back in
Short or overload in trailer brakes
Troubleshoot trailer brake circuit per
brake manufacturer's instructions
No trailer brakes, pedal or manual
Mis-wired 7-way connector
Improper or corroded trailer wiring
Weak or missing ground
Confirm vehicle and trailer 7-way connections
No trailer brakes, pedal or manual
(device notification of error)
Loss of trailer connection, unplugged or bad wiring
Confirm vehicle and trailer 7-way connections
No response on manual
override or brake output
Mis-wired 7-way connector
Improper or corroded trailer wiring
No or intermittent power to brake controller
Weak or missing ground
Wireless connectivity error
Confirm vehicle and trailer 7-way connections
Check Bluetooth and application settings
Reduced braking power on
manual override or brake output
Weak or missing ground
Improper max power or sensitivity settings
Improper or corroded trailer wiring
Confirm vehicle and trailer 7-way connections
Check Bluetooth and application settings
Increase max power or sensitivity settings
Trailer brakes on all the time
(LED shows red)
Mis-wired 7-way trailer connector
Confirm vehicle and trailer 7-way connections
App signals 'low voltage'
Low battery voltage
Check vehicle battery and replace if needed
Confirm vehicle 7-way connections and wiring
App signals a 'disconnect'
Trailer connector is disconnected
Reconnect the trailer connector
Confirm vehicle 7-way connections and wiring
App signals 'overload'
Trailer brakes are overloaded
Reconnect the trailer connector
Confirm vehicle 7-way connections and wiring
Check trailer brake wiring for short circuits
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