DTC B109E-87: Communication Error With Start Stop Unit (BCM): Notes

DTC B109E:87 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Communication error with start stop unit
Detection condition	BCM detects a communication error with the start stop unit for 10 times continuously with the ignition switched ON (engine off or on).
Fail-safe	Not applicable
Possible cause	Start stop unit connector or terminal malfunction BCM connector or terminal malfunction Short to ground in wiring harness between start stop unit terminal 1Q and BCM terminal 2J Open circuit in wiring harness between start stop unit terminal 1Q and BCM terminal 2J Start stop unit malfunction BCM malfunction
Courtesy of MAZDA MOTORS CORP.