DTC U3004-12: Acc Relay Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

System malfunction location	ACC relay circuit malfunction
Detection condition	The start stop unit detects ACC relay output monitor voltage of 2.5 V or more for 0.5 s or more with the ignition switched off.
Fail-safe	-
Possible cause	ACC relay malfunction Start stop unit connector or terminal malfunction Short to power supply in wiring harness between ACC relay terminal E and start stop unit terminal 2C Start stop unit malfunction