DTC B100C:11 [Advanced Keyless Entry And Push Button Start System]: Notes

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC B100C:11 (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION	Short to ground in steering lock unit power supply circuit
DETECTION CONDITION	Steering lock unit power supply monitor is off for 0.2 s when the steering lock unit power supply transistor is active.
POSSIBLE CAUSE	Steering lock unit connector or terminals malfunction Keyless control module connector or terminals malfunction Short to ground in wiring harness between the following terminals: Steering lock unit terminal B-Keyless control module terminal 1C Steering lock unit malfunction Keyless control module malfunction
Courtesy of MAZDA MOTORS CORP.