DTC B1547-00: Refrigerant Pressure Sensor: Negative Pressure Malfunction In Refrigerant For Cooling Vehicle Interior
B1547:00 (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Refrigerant pressure sensor: Negative pressure malfunction in refrigerant for cooling vehicle interior |
| Detection condition |
- The dash-electrical supply unit detects a negative pressure malfunction in the refrigerant for cooling the vehicle interior.
|
| Fail-safe |
|
| Possible cause |
- Refrigerant leakage from refrigerant passage
- Refrigerant pressure sensor malfunction (Refer to [REFRIGERANT PRESSURE SENSOR INSPECTION
]
).
- 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
.)
- Switch the main power OFF.
- Switch the main power ON (READY on).
- Turn the A/C on and verify that the electric compressor operation sound is heard.
- Wait for 30 s or more.
|
| System wiring diagram |
|