Kia Optima Hybrid: ESC(Electronic Stability Control) System / Yaw-rate and Lateral G Sensor Description and Operation

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Brake System / ESC(Electronic Stability Control) System / Yaw-rate and Lateral G Sensor Description and Operation

Description

When the vehicle is turning with respect to a vertical axis the yaw rate sensor detects the yaw rate electronically by the vibration change of plate fork inside the yaw rate sensor.

If yaw velocity reaches the specific velocity after it detects the vehicle''yawing, the ESC control is reactivated.

The later G sensor senses vehicle''s lateral G. A small element inside the sensor is attached to a deflectable leverarm by later G.

Direction and magnitude of lateral G loaded to vehicle can be known with electrostatic capacity changing according to lateral G.

Specifications

Description		Specification	Remarks
Operating voltage		10 ~ 16V
Output signal		CAN Interface
Operating temperature		-40 ~ 85°C (-40 ~ 185°F)
Yaw-rate sensor	Measurement range	-75 ~ 75°/sec
Yaw-rate sensor	Frequency response	15 ~ 45Hz
Lateral G sensor	Measurement range	-14.715 ~ +14.715g
Lateral G sensor	Frequency response	50Hz ± 60%

External Diagram

Rear Wheel Speed Sensor Repair procedures

Removal 1. Remove the rear wheel and tire. Tightening torque: 88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft) 2. Remove the rear wheel speed sensor mounting bolt (A). Tightening torque: 6.9 ~ 10.8 ...

Yaw-rate and Lateral G Sensor Repair procedures

Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the floor console. (Refer to the Body group - "Console") 3. Disconnect the yaw rate & lateral G sensor connector ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Specifications

Specification ItemDescriptionPower source3VOperating temperature-20°C ~ +60°CRF ModulationFSKLF ModulationASKRF frequency315MHzBatteryCR2032Transmissible distance10m or moreLife of battery2years or more(at 20 times per day)Button number4FunctionDoor lockDoor unlockTrunk lid openPanic ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Start/Stop Button Repair procedures

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 ...