DTC B1A69-86: Error Signal Received From Humidity Sensor
B1A69:86 (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Error signal received from humidity sensor |
| Detection condition |
- The dash-electrical supply unit detects a relative humidity signal error received from the humidity sensor.
|
| Fail-safe |
- Fixes the relative humidity input value at 100% and performs control.
- Performs control as a vehicle without the humidity sensor.
|
| Possible cause |
- DTCs are stored in the body control module (BCM). (See DTC TABLE [BCM]
.)
- Malfunction in wiring harness (including connector/terminal) between auto light sensor/rain sensor/solar radiation sensor/humidity sensor and body control module (BCM) (See CIRCUIT INSPECTION
.) (See CONNECTOR INSPECTION
.)
- Humidity sensor malfunction (Refer to [RAIN SENSOR REMOVAL/INSTALLATION
]
).
- Body control module (BCM) malfunction (Refer to [BODY CONTROL MODULE (BCM) 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
.)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Body control module (BCM) |
| 2 |
Auto light sensor/rain sensor/solar radiation sensor/humidity sensor |