Automatic Transmission
Input Speed Sensor
In this manual: Automatic Transmission
3steps
~18min
2/5difficulty
Done 0 of 3
Specifications
Specification
| Item | Specification |
| Type | Hall Effect Sensor |
| Current | 22 mA (max.) |
| Output Voltage | High: 4.8 V - 5.2 V |
| Low: Below 0.8 |
Description and Operation
Description
Measures the rotational speed of the input shaft inside the transmission and sends the reading to the TCM.
The sensor provides important inputs used in feedback control, torque converter clutch control, shift control, line pressure control, clutch pressure activation control, and sensor malfunction analysis.

Circuit Diagrams
Wiring Diagram

Repair Procedures
Inspection
Check the input speed sensor signal waveform using KDS/GDS.
Low speed

High speed

Removal
Remove the air cleaner.
(Refer to Engine Mechanical System - "Air Cleaner")
Disconnect the input speed sensor connector (A).

Remove the input speed sensor (A) after loosening the bolt.
Tightening Torque: 9.8–11.8 N·m

Installation
Install in the reverse order of removal.
Test yourself
A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.
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