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DTC U0028-87: Communication Error With Rear Body Control Module: Notes

Description  Communication error with rear body control module (RBCM)
Detection condition 
  • Start stop unit detects the communication error with rear body control module (RBCM) 10 times continuously. 
Fail-safe function  Not applicable
Possible cause 
  • Rear body control module (RBCM) connector or terminal malfunction
  • Start stop unit connector or terminal malfunction
  • Short to ground in wiring harness between start stop unit terminal 1Q and rear body control module (RBCM) terminal 3B
  • Open circuit in wiring harness between start stop unit terminal 1Q and rear body control module (RBCM) terminal 3B
  • Rear body control module (RBCM) malfunction
  • Start stop unit malfunction
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