Hyundai Creta: Automatic Transaxle Control System / Input Speed Sensor

Hyundai Creta GS 2014-2025 Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Input Speed Sensor

Description and operation

Description

•	Input speed sensor uses an electric current type hall sensor in which the current is changed by the magnetic variation.

•	Input speed sensor (A) and output speed sensor are integrated and installed in the transaxle.

Functions

•	Measures the rate of rotation of the input shaft inside the transaxle and delivers the readings to the TCM.

•	The sensor provides critical input data that's used in feedback control, torque converter clutch control, gear setting control, line pressure control, clutch activation pressure control, and sensor fault analysis.

Specifications

▷ Type: Hall Effect Sensor

Operation condition [°C(°F)]		(-40 ~ 150) -40 ~ 302
Output voltage (V)	High	1.18 ~ 1.68
Output voltage (V)	Low	0.59 ~ 0.84

Schematic diagrams

Circuit Diagram

Repair procedures

Inspection

Using the GDS, check the input / output speed sensor waveforms.

–	Turn the ignition key OFF

–	Connect the GDS to the Data Link Connector (DLC) on the lower crash pad.

–	Turn the ignition key ON and the engine ON.

–	Check the input / output speed sensor waveforms at high speed and low speed.

Fig 1) Input / Output speed sensor at low speed

Fig 2) Input / Output speed sensor at high speed

Removal

1.	Remove the valve body assembly. (Refer to Valve body System - "Valve Body")

2.	Disconnect the input & output speed sensor connector (A) from the main wiring.

Remove the input & output speed sensor (B) after removing the bolts (2ea).

Tightening torque :

9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

Installation

1.	To install, reverse the removal procedure.

2.	Check fluid level after filling the automatic transaxle with fluid. (Refer to Hydraulic System - "Fluid")

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Output Speed Sensor

Description and operation Description • Output speed sensor uses an electric current type hall sensor in which the current is changed by the magnetic variation ...

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