July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC B1DA0-23; Top Lock Motor Pulse Input Circuit Malfunction: Notes

Description

Top lock motor pulse input circuit malfunction

Detection condition

The retractable fastback control module cannot detect a pulse signal from the Top lock motor when the Top lock 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 4X and Top lock motor terminal F
- Retractable fastback control module terminal 4Y and Top lock motor terminal B
- Retractable fastback control module terminal 4W and Top lock motor terminal D

Short to ground in wiring harness between the following terminals:
- Retractable fastback control module terminal 4X and Top lock motor terminal F
- Retractable fastback control module terminal 4W and Top lock motor terminal D

Short to power supply in wiring harness between the following terminals:
- Retractable fastback control module terminal 4X and Top lock motor terminal F
- Retractable fastback control module terminal 4Y and Top lock motor terminal B

Line-to-line short circuit in wiring harness between the following terminals:
- Top lock motor terminal F and top lock motor terminal D
- Top lock motor terminal F and top lock motor terminal B
- Top lock motor terminal D and top lock motor terminal B

Retractable fastback control module malfunction
Top lock motor malfunction

Fig 1: Retractable Fastback Control Module Communication Diagram (B1DA0 23)

G11275649

Courtesy of MAZDA MOTORS CORP.