Kia Rio YB Quiz
Automatic Transmission

Transmission Fluid Temperature Sensor

In this manual: Automatic Transmission
General Information — 8Maintenance — 31Engine Mechanical System — 44Engine Electrical System — 14Emission Control System — 9Engine Control System/Fuel System — 30Clutch System — 10Manual Transmission — 10Automatic Transmission — 23Drive Shaft and Axle — 8Suspension System — 15Steering — 9Restraints — 14Brake System — 22Body (Interior and Exterior) — 115Body Electrical System — 84Heating, Ventilation, and Air Conditioning — 28
7steps
~42min
2/5difficulty
Done 0 of 7

Specifications

Specification

Item Specification
Type *NTC thermistor
Temp. [(°C)°F] / Resistance (kΩ) (-40)-40/139,5
(-20)-4,0/47,4
(0)32,0 / 18,6
(20)68,0/8,1
(40)104,0/3,8
(60)140,0/1,98
(80)176,0/1,08
(100)212,0/0,63
(120)248,0/0,38
(140)284,0/0,25
(160)320,0/0,16

*NTC: Negative Temperature Coefficient

Description and Operation

Description

  • The sensor used is a thermistor (NTC), whose resistance changes with temperature.

  • The fluid temperature sensor is installed on the valve body and integrated with the main harness.

Functions

  • The transmission oil temperature sensor monitors the ATF temperature and sends the signal to the TCM.

  • The data from this sensor is used to determine the torque converter clutch activation and deactivation zones within the low and high temperature ranges, and to compensate the hydraulic pressure levels during gear shifting.

Circuit Diagrams

Wiring Diagram

Repair Procedures

Inspection

  1. Turn the ignition off.

  2. Remove the air cleaner.

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

  3. Disconnect the main connector (A).

  4. Measure the resistance between terminal + (6) and terminal - (5).

  5. Make sure the resistance is within specification.

Item Specification
Type *NTC thermistor
Temp. [(°C)°F] / Resistance (kΩ) (-40)-40/139,5
(-20)-4,0/47,4
(0)32,0 / 18,6
(20)68,0/8,1
(40)104,0/3,8
(60)140,0/1,98
(80)176,0/1,08
(100)212,0/0,63
(120)248,0/0,38
(140)284,0/0,25
(160)320,0/0,16

*NTC: Negative Temperature Coefficient

Removal

  1. Remove the valve body assembly.

    (Refer to Hydraulic System - "Valve Body")

  2. Remove the main harness (A) after removing the clip (B).

Installation

  1. Install in the reverse order of removal.

Test yourself

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