Kia Optima Hybrid: Body Electrical System / High Voltage Shut-off Procedures

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Body Electrical System / High Voltage Shut-off Procedures

High Voltage Shut-off Procedures

Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

•	High voltage components: High Voltage Battery Pack Assembly, Power Relay Assembly (PRA), BMS ECU, Hybrid Power Control Unit (HPCU), Hybrid Drive Motor, HSG, Electric A/C Compressor, Low DC/DC Converter (LDC), Power Cable, Electric Compressor etc.

1.	Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) terminal.

Remove the safety plug.

(1)	Remove the safety plug cover (A).

(2)	Unfasten the hook (A) and then remove the safety plug (C) by pulling the lever (B) to the direction of arrow.

3.	Wait for more than 5 minutes so that the capacitor in the high voltage system can be fully discharged.

Measure the voltage between the inverter terminals to check that the capacitor in the inverter is discharged completely

(1)	Remove air cleaner assembly and air duct.(Refer to Engine Mechanical System – “Air Cleaner”)

(2)

Disconnect the inverter power cable (A).

Disconnect the inverter power cable as the procedures below.

(3)

Measure the voltage between the inverter (+) terminal and the inverter (-) terminal.

Less than 30V : High voltage circuit properly shut

More than 30V : Faulty on high voltage circuit

If measured more than 30V, check if the safety plug is removed completely.If measured more than 30V despite the safety plug is removed, it can be serious problems on the high voltage circuit. In this case, check DTC and never touch on the high voltage system.

General Safety Information and Caution

Safety Precaution Since hybrid vehicles contain a high voltage battery, if the high voltage system or vehicles are handled incorrectly, this might lead to a serious accidents like electric ...

General Information

General Troubleshooting Information Before Troubleshooting 1. Check applicable fuses in the appropriate fuse/relay box. 2. Check the battery for damage, state of charge, and clean and tight connections. ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Electric Oil Pump (EOP) Repair procedures

Removal 1. Disconnect the 12V battery negative (-) cable. 2. Remove the under cover (A). Tightening torque : 7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft) 3. Remove the electric oil pump (EOP) connector (A, B). 4. Remove the EOP (A) after removing the bolt and nut. Tightening torque : 42.2 ~ 53.9 ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Airbag Module Disposal Description and Operation

Airbag Disposal Special tool required Deployment tool 0957A-34100A Before scrapping any airbags or side airbags (including those installed in vehicle to be scrapped), the airbags or side airbags must be deployed. If the vehicle is still within the warranty period, before deploying the airbags or side ...