0xD90104 Foot Brake Module-Voltage Below Normal, Or Shorted To Low Source
â–¶ How to fix
Action: Check the cables and connectors between the central ECU and dFBM. If no fault found check if no disturbing improper devices are mounted.If the problem still persists replace the dFBM. If error still occur replace central ECU.
What you'll see
Symptom:
System reaction
SystemReaction: All user functions are off. Red Warning Lamp.
Diagnostic depth
Detection
Detection: The failure is reported if the communication between the dFBM and the central ECU is disturbed.
Possible cause
Cause: External electrical excitation or noise Electromagnetic disturbance Damage of the cabling between dFBM and ECU Damage of the dFBM Damage of the central ECU