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Home >> Mazda >> 2023 >> MX-5 Miata Club >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> On-Board Diagnostic - Start Stop Unit >> DTC U201F-12: Keyless Receiver Circuit Malfunction [Start Stop Unit] >> Notes

DTC U201F-12: Keyless Receiver Circuit Malfunction [Start Stop Unit]: Notes

DTC U201F:12 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description Keyless receiver circuit malfunction
Detection condition
  • Start stop unit detects that the keyless receiver circuit voltage of 6.2 V or more for 0.5 s or more.
Fail-safe Not applicable
Possible cause
  • Keyless receiver connector or terminal malfunction
  • Start stop unit connector or terminal malfunction
  • Short to power supply in wiring harness between start stop unit terminal 2Q and keyless receiver terminal A
  • Keyless receiver malfunction
  • Start stop unit malfunction
G15747542Courtesy of MAZDA MOTORS CORP.