DTC B13BD-87: Communication Error With Heated Steering Wheel Control Unit
B13BD:87 (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error with heated steering wheel control unit |
| Detection condition |
- The dash-electrical supply unit cannot receive LIN signal from the heated steering wheel control unit.
|
| Fail-safe |
- Stops the steering warmer output.
|
| Possible cause |
- Malfunction in wiring harness (including connector/terminal) between heated steering wheel control unit and dash-electrical supply unit (See CIRCUIT INSPECTION
.) (See CONNECTOR INSPECTION
.)
- Clock spring malfunction (Refer to [CLOCK SPRING INSPECTION
]
).
- Heated steering wheel control unit malfunction (Refer to [HEATED STEERING WHEEL CONTROL UNIT REMOVAL
]
). (Refer to [HEATED STEERING WHEEL CONTROL UNIT 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
.)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Dash-electrical supply unit |
| 2 |
Clock spring |
| 3 |
Heated steering wheel control unit |