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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 74 (On-Board Diagnostic - Rear Body Control Module (RBCM)) >> DTC B1207-86: Collision Signal Error >> Notes

DTC B1207-86: Collision Signal Error: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
System malfunction location  Collision signal error
Detection condition 
  • When all of the following conditions continue for 3 s.
    • 1.5 s or more have elapsed after ignition was switched ON
    • RBCM received error signal from SAS control module
Fail-safe  -
Possible cause 
  • SAS control module connector or terminal malfunction
  • Rear body control module (RBCM) connector or terminal malfunction
  • Short circuit to ground in wiring harness between SAS control module terminal 2B and rear body control module (RBCM) terminal 3R
  • Open circuit in wiring harness between SAS control module terminal 2B and rear body control module (RBCM) terminal 3R
  • Short to power supply in wiring harness between SAS control module terminal 2B and rear body control module (RBCM) terminal 3R
  • SAS control module malfunction
  • Rear body control module (RBCM) malfunction
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