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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 C1035-12: Electric Vacuum Pump Relay 1 - Short To Power Supply [EVP Control Unit] >> Notes

DTC C1035-12: Electric Vacuum Pump Relay 1 - Short To Power Supply [EVP Control Unit]: Notes

DTC C1035-12: (EVP CONTROL UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

DTC C1035:12 Electric vacuum pump relay 1: short to power supply
DETECTION CONDITION
  • EVP control unit terminal C voltage is 90% or more of the battery voltage for a continuous 0.5 s when electric vacuum pump relay 1 is turned off.
FAIL-SAFE FUNCTION
POSSIBLE CAUSE
  • Electric vacuum pump relay 1 (built-into EVP control unit) stuck ON
  • Short to power supply circuit in electric vacuum pump relay 1 (built-into EVP control unit) circuit
  • Electric vacuum pump relay 1 (built-into EVP control unit) circuit malfunction
  • EVP control unit malfunction
SYSTEM WIRING DIAGRAM -