Component Inspection

HEV Battery System
U0001 High Speed CAN Communication Bus off (C-CAN) - Inspection/Repair:_:Component Inspection

Component Inspection

Check resistance in BMS ECU
1. IG KEY OFF.
2. Disconnect Aux. battery (-) cable.
3. Wait for 5 minutes after turning Main Switch OFF.
4. Disconenct BMS ECU connector.
5. Check resistance of BMS ECU C-CAN LOW and C-CAN HIGH.

Specification :Approx. 120 Ohms

WARNING:
** Warning & Notice
Hybrid Battery system uses around 270V voltage.
It may cause death or damage due to electrical shock, if you do not follow below Instructions.
▪ Follows instructions of workshop manual.
▪ Wear and use insulated glooves and tools.
▪ IG "OFF", Disconnect ground cable of auxiliary battery and "OFF" the safety connector of the high voltage battery.
▪ Check high voltage terminal on Power Relay Assembly is lower than 30V.
▪ Be careful that it should not be short between terminals when measuring battery cell voltage. You may be injured due to spark, parts damage or electrical shock.
▪ Metalic material cause high voltage short that may cause damage of life or vehicle. Therefore, get rid of all the metalic material before working. (Metalic Material : Watch, Ring, any metalic products etc.)
▪ After disconnect W/H goes to BMS ECU from High voltage battery, be careful not to happen short between exposed terminal and terminal on high voltage connector.








6. Is the measured value within specification ?