DTC B1498/98: Communication Malfunction (A/C Inverter Local): Description
The hybrid vehicle control ECU and compressor with motor assembly transmit information to one another via a communication line. Compressor control is stopped and the DTC is output if communication information is cut off or abnormal information occurs.
The DTC is also detected if high-voltage power supplied from the inverter with converter assembly to the compressor control circuit is shut off.
The output DTC is memorized as previous trouble.
- Wear electrically insulated gloves and pull out the service plug grip before inspection as procedures may require disconnecting high-voltage connectors. Be sure to carry the removed service plug grip to prevent other technicians from accidentally reinstalling it.
- Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is removed.
- When working or high voltage wiring or components, be sure to follow all safety precautions listed in the HYBRID VEHICLE CONTROL information. Refer to PRECAUTION .
- After removing the service plug grip, turning the ignition switch to ON (READY) may cause a malfunction. Do not turn the ignition switch to ON (READY) unless instructed by the repair information.
Depending on the timing of the power supply to the 12 V power supply circuit and high-voltage circuit when the ignition switch to ON (READY), an abnormal information signal may be output, causing this DTC to be stored. If the output DTC is a code that was memorized in the past, check the fuses and wire harnesses. If there is no malfunction, erase the DTC.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1498/98 |
|
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