DTC B1D9C-23: Rear Roof Link Motor (RH) Pulse Input Circuit Malfunction [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:23 (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
Rear roof link motor (RH) pulse input circuit malfunction |
| Detection condition |
- The retractable hardtop control module cannot detect a pulse signal from the rear roof link motor (RH) when the rear roof link motor operation starts.
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| Fail-safe |
- Stops retractable hardtop operation
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| Possible cause |
- Short to ground in wiring harness between the following terminals:
- Retractable hardtop control module terminal 4Q and rear roof link motor (RH) terminal F
- Retractable hardtop control module terminal 4O and rear roof link motor (RH) terminal D
- Short to power supply in wiring harness between the following terminals:
- Retractable hardtop control module terminal 4Q and rear roof link motor (RH) terminal F
- Retractable hardtop control module terminal 4R and rear roof link motor (RH) terminal B
- Open circuit in wiring harness between the following terminals:
- Retractable hardtop control module terminal 4Q and rear roof link motor (RH) terminal F
- Retractable hardtop control module terminal 4R and rear roof link motor (RH) terminal B
- Retractable hardtop control module terminal 4O and rear roof link motor (RH) terminal D
- 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
- Rear roof link motor (RH) malfunction
- Retractable hardtop control module malfunction
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 Courtesy of MAZDA MOTORS CORP.
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