Trailer ABS Compatibility

m2 dm 09.03.001

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

The TRAILER ABS lamp will not illuminate unless a compatible trailer is connected to the tractor. The dash-mounted lamp will operate 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 will illuminate momentarily, then turn 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: 0000117801
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-05-09