DTC B1B93-13; Recliner Motor And Position Sensor Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

Description	Recliner motor and position sensor circuit malfunction
Detection condition	Position memory control module detects the following conditions during the recliner motor operation control: Detects 4 times that current flowing to the recliner motor is less than 1 A. Detects for 0.2 s that there is no change in the recliner sensor pulse. Position memory control module detects any of the following conditions during the recliner motor not operation control: Detects 4 times that current flowing to the recliner motor exceeds 10 A. Detects 4 times that current flowing to the recliner motor exceeds 1 A and a change in the recliner sensor pulse 5 times within 1 s. Position memory control module detects for 5 s that there is no change in the recliner sensor pulse during the recliner motor operation control.
Fail-safe	Memory clearing: If there is a malfunction in the recliner position sensor, clear all the memory positions. Memory seat positioning using position memory switch and remote transmitter: If there is a malfunction in the recliner position sensor, inhibits all memory seat positioning. If there is a malfunction in the recliner motor, inhibits recliner motor seat positioning. Recliner motor seat positioning using power seat switch: If there is a malfunction in the recliner motor, inhibits recliner motor seat positioning. Memory registration using position memory switch and remote transmitter: If there is a malfunction in the recliner position sensor, inhibits the memory registration. If there is a malfunction in the recliner motor and the malfunction is caused by short circuit, inhibits the memory registration.
Possible cause	Recliner motor and position sensor connector or terminal malfunction Position memory control module connector or terminal malfunction Short to ground in wiring harness between the following terminals: Position memory control module terminal 3G-Recliner motor and position sensor terminal B Position memory control module terminal 3H-Recliner motor and position sensor terminal A Position memory control module terminal 3O-Recliner motor and position sensor terminal C Position memory control module terminal 3P-Recliner motor and position sensor terminal D Short to power supply in wiring harness between the following terminals: Position memory control module terminal 3G-Recliner motor and position sensor terminal B Position memory control module terminal 3H-Recliner motor and position sensor terminal A Position memory control module terminal 3O-Recliner motor and position sensor terminal C Position memory control module terminal 3P-Recliner motor and position sensor terminal D Open circuit in wiring harness between the following terminals: Position memory control module terminal 3G-Recliner motor and position sensor terminal B Position memory control module terminal 3H-Recliner motor and position sensor terminal A Position memory control module terminal 3O-Recliner motor and position sensor terminal C Position memory control module terminal 3P-Recliner motor and position sensor terminal D Front seat malfunction Recliner motor and position sensor malfunction Position memory control module malfunction