Trailer ABS Compatibility

sdp dm 11.05.002

The Meritor WABCO ABS is designed to communicate with a trailer ABS, if they are compatible. Compatibility is shown with the illumination of the TRAILER ABS lamp during vehicle start-up and fault detection.

The TRAILER ABS lamp does not illuminate unless a compatible trailer is connected to the tractor. The dash-mounted lamp operates as follows when a compatible trailer is properly connected to the tractor:

  • When the ignition key is turned to the ON position, the TRAILER ABS lamp illuminates momentarily, then turns off.

  • If the lamp illuminates momentarily during vehicle operation, then shuts off, a fault was detected and corrected.

  • If the lamp illuminates and stays on during vehicle operation, there is a fault with the trailer ABS. Repair the trailer ABS system immediately to ensure full antilock braking capability.

Important: If a compatible trailer is connected, and the lamp is not illuminating momentarily when the ignition key is turned to the ON position, it is possible that the lamp is burnt out.

Note:
Parent topic: Meritor WABCO® Antilock Braking System
Document Number: 0000111781
Manual Publication Date: 2024-09-03
Topic Publication Date: 2024-05-02