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DTC B1D9C-23; Rear Roof Link Motor (RH) Pulse Input Circuit Malfunction: Notes

Description Rear roof link motor (RH) pulse input circuit malfunction
Detection condition
  • The retractable fastback control module cannot detect a pulse signal from the rear roof link motor (RH) when the rear roof link motor operation starts.
Fail-safe
  • Stops retractable fastback operation
Possible cause
  • Open circuit in wiring harness between the following terminals:
    • Retractable fastback control module terminal 4Q and rear roof link motor (RH) terminal F
    • Retractable fastback control module terminal 4R and rear roof link motor (RH) terminal B
    • Retractable fastback control module terminal 4O and rear roof link motor (RH) terminal D
  • Short to ground in wiring harness between the following terminals:
    • Retractable fastback control module terminal 4Q and rear roof link motor (RH) terminal F
    • Retractable fastback control module terminal 4O and rear roof link motor (RH) terminal D
  • Short to power supply in wiring harness between the following terminals:
    • Retractable fastback control module terminal 4Q and rear roof link motor (RH) terminal F
    • Retractable fastback control module terminal 4R and rear roof link motor (RH) terminal B
  • Line-to-line short circuit in wiring harness between the following terminals:
    • Rear roof link motor (RH) terminal F and rear roof link motor (RH) terminal D
    • Rear roof link motor (RH) terminal F and rear roof link motor (RH) terminal B
    • Rear roof link motor (RH) terminal D and rear roof link motor (RH) terminal B
  • Retractable fastback control module malfunction
  • Rear roof link motor (RH) malfunction
Fig 1: Retractable Fastback Control Module Communication Diagram (B1D9C 23)
G11275643Courtesy of MAZDA MOTORS CORP.