W/Harness Inspection

HEV Battery System
P0A7F Hybrid Battery Pack Deterioration - Inspection/Repair:_:W/Harness Inspection

Terminal & Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found ?






Checking the Max Cell resistance of high voltage battery system

Checking the Max Cell resistance of the High Voltage Battery system
1. Ignition OFF.
2. Connect the GDS.
3. Ignition ON (SSB LED "BLUE")
4. Select "Current Data".
5. Check "Max Cell resistance of the High Voltage Battery ".

Specification :Max Cell resistance less than 13mOhms




Fig.1) SOC 47.5.% of high voltage battery,(Current Data) - the Max Cell resistance of high voltage battery in the KEY ON status.

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.




Fig.1) SOC 47.5.% of high voltage battery,(Current Data) - the Max Cell resistance of high voltage battery in the KEY ON status.
6. Are measured value within specification ?