DTC B1528-87: Communication Error With PTC Heater
B1528:87 (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error with PTC heater |
| Detection condition |
- The dash-electrical supply unit cannot receive the signals from the PTC heater.
|
| Fail-safe |
|
| Possible cause |
- DTCs are stored in the dash-electrical supply unit. (DTC U3003:16 or U3003:17) (See U3003-16: ). (See U3003-17: ).
- Malfunction in wiring harness (including connector/terminal) between PTC heater and dash-electrical supply unit (See CIRCUIT INSPECTION
.) (See CONNECTOR INSPECTION
.)
- PTC heater malfunction (Refer to [
POSITIVE TEMPERATURE COEFFICIENT (PTC) HEATER 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
.)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Dash-electrical supply unit |
| 2 |
PTC heater |