Kia Optima DL3 Quiz
Automatic Transmission

Speed Sensor

In this manual: Automatic Transmission
General Information — 8Advanced Driver Assistance System (ADAS) — 21Maintenance — 27Engine Mechanical System — 45Engine Electrical System — 11Emission Control System — 11Engine Control System/Fuel System — 25Automatic Transmission — 20Drive Shaft and Axle — 7Suspension System — 22Steering — 7Restraints — 11Brake System — 22Body (Interior and Exterior) — 116Body Electrical System — 90Heating, Ventilation, and Air Conditioning — 32
11steps
~66min
3/5difficulty
02040608010043.132N·mlb·ft
Tightening torque found on this page
Done 0 of 11

Specifications

Specification

Item Specification
Type Hall Effect Sensor
Output voltage (V) High: 1.18–1.68
Low: 0.59–0.84

Description and Operation

Description

Input Speed Sensor

  • The input speed sensor (A) and output speed sensor (B) are built into and installed on the transmission.

  • The speed sensor uses an electric current type Hall sensor, in which the current is changed by magnetic deflection.

  • The sensor provides important input data used for feedback control, engine clutch control, shift control, line pressure control, lock-up clutch pressure control, and sensor malfunction diagnosis.

Components and Component Location

Components

1. Valve Body Cover 4. Output Speed Sensor
2. Main Harness Assembly 5. Input Speed Sensor
3. Valve Body

Repair Procedures

Inspection

  1. The automatic transmission system can be quickly diagnosed for malfunctions using the Kia Diagnostic System (KDS). (Refer to the Diagnostic Trouble Code Manual.)

    KDS provides the following information.

    1. Self-diagnosis: Checks and displays diagnostic trouble codes (DTC).

    2. Data list: Checks the input/output values of the system.

    3. Active test: Checks the operating condition of the system.

    4. Additional functions: System option control, zero point adjustment, and other functions.

Component Inspection

  1. Check the sensor signal waveform using KDS.

Removal

  1. Remove the under cover.

    (Refer to Engine Mechanical System - "Engine Room Cover")

  2. Remove the ATF drain plug (A), allow the fluid to drain, and then reinstall the drain plug.

    Tightening torque: 33.3–43 N·m

  3. Remove the air cleaner assembly.

    (Refer to Engine Mechanical System - "Air Cleaner")

  4. Remove the wire harness bracket (A) and breather hose (B).

    Tightening torque: 9.8–11.8 N·m

  5. Disconnect the hose (A) from the oil cooler hose clamp after draining the automatic transmission fluid.

  6. Raise the vehicle after loosening the upper valve body cover bolts.

  7. Remove the valve body cover (A) by loosening the bolts.

    Tightening torque: 11.8–13.7 N·m

  8. Remove the main harness assembly (A) after removing the bolts.

    Tightening torque: 9.8–11.8 N·m

  9. Remove the valve body (A) after loosening the bolts.

    Tightening torque: 9.8–11.8 N·m

  10. Disconnect the speed sensor connector (A).

  11. Remove the speed sensor (A) after loosening the bolts.

    Tightening torque: 9.8–11.8 N·m

Installation

  1. Install in the reverse order of removal.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.