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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (On-Board Diagnostic - Blind Spot Monitoring Control Module) >> DTC U1A4B-54: Radar Aiming Is Not Performed >> Notes

DTC U1A4B-54: Radar Aiming Is Not Performed: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • When replacing a blind spot monitoring (BSM) control module (RH) having any of the following part numbers, it is necessary to replace the blind spot monitoring (BSM) control module (LH) at the same time to perform the configuration normally.
    • DB2R-67Y80
    • DB2R-67Y80 A
Description Radar aiming is not performed or radar sensor axis is deviated (Blind spot monitoring (BSM) control module (RH)
Detection condition 
  • Malfunction in radar aiming of the blind spot monitoring (BSM) control module (RH) detected for 1 s or more  with the ignition switched ON (engine off or on).
Fail-safe 
  • Blind spot monitoring (BSM) system is stopped.
Possible cause 
  • Blind spot monitoring (BSM) radar aiming (RH) was not performed.
  • Deviation of blind spot monitoring (BSM) control module (RH) radar sensor axis
  • Blind spot monitoring (BSM) control module (RH) malfunction
System wiring diagram  Not applicable