DTC B10E7:16 [Advanced Keyless Entry And Push Button Start System]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION AND POSSIBLE CAUSE

DETECTION CONDITION	IG1 monitor input circuit voltage less than threshold (2.2-6.5 V ) is detected for 1 s , while IG1 relay output circuit is active
POSSIBLE CAUSE	ENG IG 15 A fuse malfunction Connector or terminal malfunction Short to ground in wiring harness between relay block terminal 1B and keyless control module terminal 2C Relay block malfunction Open circuit in wiring harness between relay block terminal 1B and keyless control module terminal 2C Keyless control module malfunction
Courtesy of MAZDA MOTORS CORP.