Hyundai Elantra (CN7): Dual Clutch Transmission Control System / Gear Actuator Assembly

Hyundai Elantra (CN7) 2021-2026 Service Manual / DCT(Dual Clutch Transmission) System / Dual Clutch Transmission Control System / Gear Actuator Assembly

Description and operation

Description

•	Gear actuator uses signals from TCM to control the gear.

Specifications

Specification

Item	Specification
Operation condition	-40 to 257 °F (- 40 to 125 °C )
Rated voltage	12V

Components and components location

Components

1. Gear actuator assembly

Schematic diagrams

[Connector and Terminal Function]

Pin	Description	Pin	Description
1	Ground (Power)	4	CAN3 Low
2	Battery Power	5	CAN4 High
3	CAN3 High	6	CAN4 Low

Repair procedures

Inspection

The DCT system can be more quickly diagnosed for troubles by using the vehicle diagnostic system (diagnostic tool). (Refer to DTC guide)

diagnostic tool provides the following information.

1)	Self diagnosis : Inspects and displays diagnostic trouble code (DTC)

2)	CAN signals : Checks the system input/output value status

3)	Forced operation : Checks the system operating status

4)	Additional function : Controls system options, zero point adjustment and other functions

Removal

1.	Turn ignition switch OFF and disconnect the battery negative (-) terminal.

2.	Remove the air cleaner assembly and air duct. (Refer to Engine Mechnical System - "Air Cleaner")

3.	Remove the battery and battery tray. (Refer to Engine Electrical System - "Battery")

4.	Loosen the bolts and then remove the ground line (A).

5.	Disconnect the gear actuator connector (A).

Remove the gear actuator assembly after loosening bolts (A).

Tightening torque :

19.6 - 26.5 N.m (2.0 - 2.7 kgf.m, 14.5 - 19.5 lb-ft)

Installation

To install, reverse the removal procedure.

•	Check the details below before installing the gear actuator assembly.

1)	Check that the gear actuator is placed in the "neutral" state.

2)	Check the assembled state of the O-rings (A).

3)	Apply gear oil to the surface of O- rings.

4)	Check the assembled state of the dowel pins (A).

•	Perform the clutch touch point learning procedure using the diagnostic tool after replacing the clutch actuator assembly.

❮Clutch Actuator & TCM Assembly

Specifications Specification Item Specification Rated voltage12VRod length79.0 - 80.0 mm (3.1102 - 3.

Input Speed Sensor❯

Description and operation Description• Components location : DCT (Dual Clutch Transmission)• Function The input shaft speed sensor is important in that it detects the input shaft RPM and sends this information to the Transmission Control Module (TCM).

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: A/C Pressure Transducer

Description and operation DescriptionThe A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.

Hyundai Elantra (CN7) 2021-2026 Service Manual: Ambient Temperature Sensor

Description and operation DescriptionThe ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.