System Faults
Warning: LEDs blinking, or one light lluminated on a control, indicate there is a problem or fault with the system. In some instances, the parking brake may be unavailable and the vehicle should NOT be driven. Failure to follow this instruction can result in personal injury and property damage.
See Fig. and see Table. for an interpretation of each LED illumination status.
-
Left LED Trailer Air Supply Control
-
Right LED Trailer Air Supply Control
-
Left LED Parking Brake Control
-
Right LED Parking Brake Control
Fig. 1, Towing Vehicle Controls
Table 1, LED Illumination Key
|
LED Illumination Key |
||||
|
Left LED 1—Trailer Air Supply Control |
Right LED 2—Trailer Air Supply Control |
Left LED 3—Parking Brake Control |
Right LED 4—Parking Brake Control |
Status |
|
ON |
ON |
ON |
ON |
All LEDs illuminate for 3 seconds when ignition is applied. |
|
ON |
ON |
ON |
ON |
3 seconds after ignition is applied - both towing vehicle parking brake and trailer spring brakes are set. |
|
OFF |
OFF |
OFF |
OFF |
3 seconds after ignition is applied - both towing vehicle parking brake and trailer spring brakes are released. |
|
ON |
ON |
OFF |
OFF |
Trailer spring brakes are set. Towing vehicle park brakes are released. |
|
ON |
Blinking |
ON |
ON |
A fault is present on the trailer spring brake system. Both the trailer spring brakes and the towing vehicle parking brakes are set. |
|
OFF |
Blinking |
OFF |
OFF |
A fault is present on the trailer spring brake system. Both the trailer spring brakes and the towing vehicle parking brakes are released. |
|
ON |
ON |
Blinking |
ON |
A fault is present on the towing vehicle park brake system. Both the trailer spring brakes and the towing vehicle parking brakes are set. |
|
OFF |
OFF |
Blinking |
OFF |
A fault is present on the towing vehicle park brake system. Both the trailer spring brakes and the towing vehicle parking brakes are released. |
|
OFF |
Blinking |
Blinking |
OFF |
An internal controller fault has been detected. |
|
Blinking |
Blinking |
OFF |
OFF |
A fault with the trailer pressure sensor has been detected. Immediately chock the wheels and have the system serviced as soon as possible. |
|
OFF |
OFF |
Blinking |
Blinking |
A fault with the towing vehicle pressure sensor has been detected. Immediately chock the wheel and have the system serviced as soon as possible. |