DTC B1D9C-79: Exceeds Maximum Number Of Pulse Counts For Rear Roof Link Motor (RH) [Retractable Hardtop Control Module]: Notes

WARNING: This page is about a different car, the 2020 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1D9C:79 (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Exceeds maximum number of pulse counts for rear roof link motor (RH)
Detection condition	The retractable hardtop control module detects a pulse signal exceeding the upper limit of the pulse count number from the rear roof link motor (RH).
Fail-safe	Stops retractable hardtop operation
Possible cause	Rear roof link motor (RH) is disengaged from rear roof link (motor idling) Rear roof link motor (RH) malfunction Retractable hardtop control module malfunction
System wiring diagram	Not applicable