DTC U3004-16; Acc Relay Circuit Malfunction: Notes
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| Description |
ACC relay circuit malfunction |
| Detection condition |
- Start stop unit detects that the ACC monitor voltage of less than 2.5 V for 1 s or more with the ignition switched to ACC or ON (engine off or on).
|
| Fail-safe function |
Not applicable |
| Possible cause |
- ACC relay malfunction
- ACC relay circuit malfunction
- Short to ground in wiring harness between MAIN 200 A fuse and ACC relay terminal C
- IG2 30 A fuse malfunction
- MAIN 200 A fuse malfunction
- Open circuit in wiring harness between battery positive terminal and ACC relay terminal C
- Start stop unit connector or terminal malfunction
- Short to ground in wiring harness between ACC relay terminal D and start stop unit terminal 1E
- MIRROR 7.5 A fuse malfunction
- Open circuit in wiring harness between ACC relay terminal D and start stop unit terminal 1E
- Start stop unit malfunction
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