Automatic Air Conditioner

U0424 ELECTRIC COMPRESSOR

Description
The HV ECU and electric compressor 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 MG ECU to the compressor control circuit is shut off.The output DTC is memorized as current 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 removed.

DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE

Step 1-2:

Diagnosis Procedure

Step 1-2:

Step 2 (Continued)-6:

Step 6 (Continued)-7:

Step 8-10:

Step 10 (Continued):