DTC B143A-00: Collision Detection Unlock Function Operation: Notes

WARNING: This page is about a different car, the 2018 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

DTC B143A:00 (REAR BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Collision detection unlock function operation
Detection Condition	Rear body control module (RBCM) operates the collision detection unlock function.
Fail-safe	Not applicable
Possible Cause	CAUTION: The rear body control module (RBCM) operates the collision detection unlock function in the event of a collision to enhance rescue operation from outside the vehicle. The rear body control module (RBCM) operates the collision detection unlock function and outputs this DTC simultaneously. Explain to the customer that this may not indicate a malfunction even if this DTC is output. Collision detection unlock function operated due to vehicle collision. Rear body control module (RBCM) internal malfunction
System Wiring Diagram	Not applicable