DTC B1B91-2A: Driver-Side Tilt Position Sensor (Seat) Circuit Malfunction
B1B91:2A (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE
| SYSTEM MALFUNCTION LOCATION |
DRIVER-SIDE TILT POSITION SENSOR (SEAT) CIRCUIT MALFUNCTION |
| DETECTION CONDITION |
- THE DASH-ELECTRICAL SUPPLY UNIT DETECTS THAT TILT POSITION SENSOR (SEAT) CIRCUIT MALFUNCTION.
|
| FAIL-SAFE |
- INHIBITS THE SEAT POSITION RECALL AND SEAT POSITION PROGRAMMING OF THE POSITION MEMORY SYSTEM.
|
| POSSIBLE CAUSE |
- MALFUNCTION IN WIRING HARNESS (INCLUDING CONNECTOR/TERMINAL) BETWEEN DRIVER-SIDE TILT POSITION SENSOR (SEAT) AND POSITION MEMORY CONTROL MODULE (SEE CIRCUIT INSPECTION
.) (SEE CONNECTOR INSPECTION
.)
- DRIVER-SIDE FRONT SEAT MALFUNCTION (DRIVER-SIDE TILT POSITION SENSOR CIRCUIT MALFUNCTION OR DRIVER-SIDE TILT POSITION SENSOR MALFUNCTION) (REFER TO [FRONT SEAT REMOVAL/INSTALLATION
]
).
- POSITION MEMORY CONTROL MODULE MALFUNCTION (REFER TO [POSITION MEMORY CONTROL MODULE REMOVAL/INSTALLATION
]
).
- DASH-ELECTRICAL SUPPLY UNIT MALFUNCTION (REFER TO [DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION
]
).
|
| REPEATABILITY VERIFICATION PROCEDURE |
- CLEAR THE DTC RECORDED IN THE MEMORY. (SEE CLEARING DTC
.)
- DRIVER-SIDE OPERATE THE TILT MOTOR (SEAT).
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
POSITION MEMORY CONTROL MODULE |
| 2 |
DRIVER-SIDE TILT MOTOR AND POSITION SENSOR (SEAT) |