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DTC U0028-87; Blind Spot Monitoring (BSM) Control Module (LH) And (RH) Communication Error: Notes

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.
DTC U0028-87; BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND (RH) COMMUNICATION ERROR - DETECTION CONDITION & POSSIBLE CAUSE

Description Blind spot monitoring (BSM) control module (LH) and (RH) communication error
Detection condition
  • No communication between blind spot monitoring (BSM) control modules (LH) and (RH) 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) control module (RH) connector or terminal malfunction
  • Blind spot monitoring (BSM) control module (LH) connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • Blind spot monitoring (BSM) control module (LH) terminal G-Blind spot monitoring (BSM) control module (RH) terminal G
      • Blind spot monitoring (BSM) control module (LH) terminal J-Blind spot monitoring (BSM) control module (RH) terminal J
  • Short to power supply in wiring harness between the following terminals:
    • Blind spot monitoring (BSM) control module (LH) terminal G-Blind spot monitoring (BSM) control module (RH) terminal G
      • Blind spot monitoring (BSM) control module (LH) terminal J-Blind spot monitoring (BSM) control module (RH) terminal J
  • Open circuit in wiring harness between the following terminals:
    • Blind spot monitoring (BSM) control module (LH) terminal G-Blind spot monitoring (BSM) control module (RH) terminal G
      • Blind spot monitoring (BSM) control module (LH) terminal J-Blind spot monitoring (BSM) control module (RH) terminal J
  • Blind spot monitoring (BSM) control module (RH) malfunction
  • Blind spot monitoring (BSM) control module (LH) malfunction
G11438304Courtesy of MAZDA MOTORS CORP.
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