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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (On-Board Diagnostic - Start Stop Unit) >> DTC U3004-11: Acc Relay Circuit Malfunction >> Notes

DTC U3004-11: 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 
  • With the ignition switched to ACC or ON (engine off or on), the start stop unit detects ACC relay output monitor voltage of less than specification for 0.05 s or more.
Fail-safe  -
Possible cause 
  • ACC relay malfunction
  • Start stop unit connector or terminal malfunction
  • Short to ground in wiring harness between ACC relay terminal E and start stop unit terminal 2C
  • Start stop unit malfunction
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