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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 C101C-72: Electric Vacuum Pump - Logic Inconsistent [EVP Control Unit] >> Notes

DTC C101C-72: Electric Vacuum Pump - Logic Inconsistent [EVP Control Unit]: Notes

DTC C101C-72: (EVP CONTROL UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

DTC C101C:72 Electric vacuum pump: logic inconsistent
DETECTION CONDITION
  • Control status and the PID value of electric vacuum pump relay 1 or 2 (built into EVP control unit) do not correspond for a continuous 0.2 s.
FAIL-SAFE FUNCTION
POSSIBLE CAUSE
  • EVP control unit power supply circuit malfunction
  • Improper operation of electric vacuum pump relay 1 (built-into EVP control unit)
  • Improper operation of electric vacuum pump relay 2 (built-into EVP control unit)
  • EVP control unit malfunction
SYSTEM WIRING DIAGRAM -