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Home >> Mazda >> 2017 >> 6 Touring, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Connectivity Master Unit >> DTC B1087-87; Communication Error With Commander Switch >> Notes
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DTC B1087-87; Communication Error With Commander Switch: Notes

DETECTION CONDITION & POSSIBLE CAUSES

Description Communication error with commander switch
Detection condition
  • The connectivity master unit (CMU) cannot receive a LIN signal from the commander switch for 5 s or more with the ignition switched ACC or ON (engine off or on).
Fail-safe Not applicable
Possible cause
  • Commander switch connector or terminal malfunction
  • Connectivity master unit (CMU) connector or terminal malfunction
  • Short to ground in wiring harness between connectivity master unit (CMU) terminal 2K and commander switch terminal E
  • Short to power supply in wiring harness between connectivity master unit (CMU) terminal 2K and commander switch terminal E
  • Open circuit in wiring harness between connectivity master unit (CMU) terminal 2K and commander switch terminal E
  • Commander switch malfunction
  • Connectivity master unit (CMU) malfunction
G11544865