DTC P0A94-589 DC / DC Converter Performance; DTC P0A94-590 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 voltage sensor, which has been built into the boost converter, to detect the high voltage before it is boosted and for boost control.
The boost converter voltage sensor outputs a voltage that varies between 0 and 5 V in accordance with the changes in the high voltage. The higher the high voltage, the higher the output voltage, and the lower the high voltage, the lower the output voltage.
The HV control ECU monitors a signal line of the boost converter voltage sensor and detects a malfunction.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0A94 | 589 | Open or GND short in boost converter voltage (VL) sensor circuit |
|
| P0A94 | 590 | +B short in boost converter voltage (VL) sensor circuit |
|
HINT:
After confirming DTC P0A94 (INF 589 or 590), confirm VL in DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST using the intelligent tester.
| Voltage Displayed | Malfunction |
|---|---|
| 510 V | +B short circuit |
| 0 V | Open or GND short circuit |