Brake switch ABS, signal low
â–¶ How to fix
Use SDP3 or Allison diagnostic tool to check the status on ABS which comes via CAN. If a fault is not found on ABS/EBS, contact an Allison dealer
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The control unit is calibrated to receive the ABS status and detects an acceleration while the ABS status is active.
Possible cause
There is probably a fault on ABS/EBS or the gearbox control unit.