Operation CHARM: Car repair manuals for everyone.

U029A

U029A-123

Description
The battery smart unit detects the HV battery conditions (voltage, current, and temperature) and the battery cooling fan voltages, and sends the detected information to the hybrid vehicle control ECU via serial communication.

DTC Logic

DTC DETECTION LOGIC






Diagnosis Procedure

Step 1-3:




Step 3 (Continued)-5:




Step 5 (Continued)-6: