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Home >> Mazda >> 2022 >> MX-5 Miata RF Club >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> On-Board Diagnostics - Electric Vacuum Pump (EVP) >> DTC U3000-11/U3000-12/U3000-46/U3000-47/U3000-56/U3000-96: EVP Control Unit Internal Circuit Malfunction [EVP Control Unit] >> Notes

DTC U3000-11/U3000-12/U3000-46/U3000-47/U3000-56/U3000-96: EVP Control Unit Internal Circuit Malfunction [EVP Control Unit]: Notes

DTC U3000-11/U3000-12/U3000-46/U3000-47/U3000-56/U3000-96: (EVP CONTROL UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

DTC U3000:11 EVP control unit internal circuit malfunction
U3000:12
U3000:46
U3000:47
U3000:56
U3000:96
DETECTION CONDITION
  • DTC U3000:11
    • Open or short to ground in the temperature sensor circuit inside the EVP control unit continues for 0.1 s.
  • DTC U3000:12
    • Short to power supply in the temperature sensor inside the EVP control unit continues for 0.1 s.
  • DTC U3000:46
    • ROM/RAM data error in the electric vacuum pump is detected.
  • DTC U3000:47
    • Sub CPU/ROM/RAM error in the EVP control unit is detected.
  • DTC U3000:56
    • ROM/RAM file error in the EVP control unit is detected.
  • DTC U3000:96
    • The A/D converter in the electric vacuum pump unit or the current value of the pump control circuit when the electric vacuum pump is stopped is stuck for a continuous 0.2 s.
FAIL-SAFE FUNCTION
POSSIBLE CAUSE
  • EVP control unit malfunction
SYSTEM WIRING DIAGRAM -