DTC P0A94-583 DC / DC Converter Performance; DTC P0A94-584 DC / DC Converter Performance: Description
See the description of the boost converter (see DTC P0A94-442 DC / DC CONVERTER PERFORMANCE ).
The HV control ECU uses a temperature sensor, which is built into the boost converter, to detect the temperature of the boost converter.
The boost converter temperature sensor outputs a voltage, which varies between 0 and 5 V in accordance with the changes in the temperature. The higher the boost converter temperature, the lower the output voltage. Conversely, the lower the temperature, the higher the output voltage.
The HV control ECU limits the load based on the signals transmitted by the boost converter temperature sensor, in order to prevent the boost converter from overheating. Furthermore, the HV control ECU detects a malfunction in the wiring of the boost converter temperature sensor, as well as in the sensor itself.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0A94 | 583 | Open or GND short in boost converter temperature sensor circuit |
|
| P0A94 | 584 | +B short in boost converter temperature sensor circuit |
|
HINT:
After confirming DTC P0A94 (INF 583 or 584), confirm CONVERTER TEMP in DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST using the intelligent tester.
| Temperature Displayed | Malfunction |
|---|---|
| -50°C (-58°F) | +B short circuit |
| 205°C (401°F) | Open or GND short circuit |