Kia Optima Hybrid: Hydraulic System / Oil Pump Uni t(OPU) Description and Operation

Description
The oil pump main relay is installed within the HEV fusible link box of the engine room. When the Oil Pump Unit (OPU) triggers the oil pump main relay, electric current needed to operate the Electric Oil Pump (EOP) passes through the Oil Pump Unit (OPU) and is supplied to the Electric Oil Pump (EOP).
In general, the Electric Oil Pump (EOP) operation is controlled by TCM via CAN communication, but in case of CAN communication failure, there is a back-up hard wiring between the TCM and Oil Pump Unit (OPU) as shown below.

Oil Pump Unit(OPU) Control System

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 ...

Oil Pump Uni t(OPU) Specifications

Specifications Operating voltage (V)12 Current15 ~ 20A (normal), 45A (Max.) ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: 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 shock and electric leakage.     • Be sure to shut off the high voltage by removing the ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Driver Airbag (DAB) Module and Clock Spring Description and Operation


Description Driver Airbag (DAB) is installed in the steering wheel and electrically connected to SRSCM via the clock spring. It protects the driver by deploying the airbag when frontal crash occurs. The SRSCM determines deployment of the Driver Airbag (DAB).     Never attempt to measure the ...

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