Kia Optima Hybrid: ESC(Electronic Stability Control) System / Steering Angle Sensor Description and Operation

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Brake System / ESC(Electronic Stability Control) System / Steering Angle Sensor Description and Operation

Description

The Steering Angle Sensor (SAS) is installed in MDPS (Motor Driven Power Steering) and it sends messages to HECU through CAN communication line.

The SAS is used to determine turning direction and speed of the steering wheel.

The HECU uses the signals from the SAS when performing ESC-related calculations.

Components (Steering Angle Sensor, Torque Sensor, Failsafe relay, etc.) of the EPS system are located inside the steering column & EPS unit assembly and the steering column. EPS unit assembly must not be disassemble to be inspected. They must be replaced. (Refer to “ST (Steering system) Gr.”)

ESC OFF Switch Repair procedures

Inspection 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the crash pad side switch assembly. 3. Check the continuity between the switch terminals as the ESC OFF switch ...

Parking Brake System

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Removal 1. Disconnect the negative (-) battery terminal. 2. Using a screwdriver or remover, remove the crash pad side cover (A). 3. After loosening the mounting screws, then remove the crash pad lower panel (A). 4. Disconnect the crash pad lower switch connectors (A), diagnosis connector (B), crash pad ...