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

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Automatic Transaxle System / 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: Automatic Transaxle Description and Operation

Description Automatic Transaxle’s Role Both the engine clutch and the motor are mounted within the automatic transaxle assembly. The engine clutch is used to link the engine with the transaxle. The motor is used to turn the input of the transaxle or can be used as a generator. When used as a generator, ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Rear Seat Repair procedures

Replacement Seat Assembly Replacement 1. Remove the rear seat cushion (A). 2. Disconnect the rear seat heater connectors (A). 3. After loosening the mounting bolts, then remove the rear seat back (A). Tightening torque : 16.7 ~ 25.5N.m (1.7 ~ 2.6kgf.m, 12.3~18.8lb-ft) 4. Installation is the reverse of ...