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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - Blind Spot Monitoring (BSM) Control Module >> DTC U0401-68: Error Signal Received From Pcm [Blind Spot Monitoring (BSM) Control Module] >> Notes

DTC U0401-68: Error Signal Received From Pcm [Blind Spot Monitoring (BSM) Control Module]: Notes

DTC U0401:68 (BLIND SPOT MONITORING CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Error signal received from PCM
DETECTION CONDITION
  • Blind spot monitoring (BSM) control module (LH) receives the error signal from the PCM for 2 s or more with the ignition switched ON (engine off or on).
Fail-safe
  • Blind spot monitoring (BSM) system is stopped.
Possible cause
  • DTCs are stored in the PCM.
    • PCM malfunction
  • DTCs are stored in the instrument cluster.
    • Instrument cluster malfunction
  • Blind spot monitoring (BSM) control module (LH) malfunction
SYSTEM WIRING DIAGRAM Not applicable