What to Do When Trailer ABS Malfunctions?

1 Answers
KeiraLynn
07/29/25 1:00am
Solutions for trailer ABS malfunctions: 1. If the trailer exhibits dragging brakes during operation, replace the tractor head. Use soapy water to check for air leaks and eliminate potential faults. If leaks persist, inspect the valve body for water ingress or significant rust to determine if replacement is needed. 2. If the trailer fails to start after parking, first disconnect the ABS spiral cable to see if it can start normally. Ensure the tractor is in the air charging state, then disconnect the hand control valve air hose to check if the air pressure is normal. Trailer braking is typically air-operated, with the air source coming from the tractor. The air circuit of a semi-trailer is not overly complex, mainly consisting of three key components: the emergency relay valve, trailer ABS, and brake chambers.
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