DTC 98

DTC B1498/98 Communication Malfunction (A/C Inverter Local)

DESCRIPTION

DTC Detection Condition:

The hybrid vehicle control ECU and compressor transmit information to one another via the CAN and multiplex communication lines. 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 assembly to the compressor control circuit is shut off.

The output DTC is memorized as previous trouble.

CAUTION:
- 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 because other workers may install it by mistake.
- Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is remove.

NOTE:
- This circuit uses both CAN and multiplex communication. Before performing the inspection, check that the CAN and multiplex communication systems are functioning normally.
- If abnormal information occurs as a result of the timing of the power switch and the high voltage power supply, this DTC may be output. If the DTC is a past trouble, check the fuse and the wire harness. If there is no malfunction, erase the DTC.

Wiring Diagram:

Step 1:

Step 1 (Continued)-3:

Step 4-5:

Step 6:

Step 7-8:

Step 8 (Continued)-10:

Step 10 (Continued):

INSPECTION PROCEDURE