Hyundai Santa Cruz: Dual Clutch Control System / DCT Control Module (TCM)

- Components Location

1. Dual Clutch Transmission(DCT) assembly
2. DCT control module (TCM)

1. DCT control module (TCM)

Connector [A]

Connector [B]

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

• GDS provides the following information.

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

(2)Sensor data : 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

Transmission Control Module (TCM) Inspection Procedure

1.Inspecting TCM ground circuit: Measure the resistance between the TCM and chiassis ground. (Check the Pin connected to the chassis ground while using the back of the harness connector as the base point for TCM.)

Normal reading (resistance) : Below 1Ω

2.Inspecting the TCM connector: Disconnect the TCM connector and visually inspect to see whether there is a bend on the ground Pin of the harness connector. Also visually check the connection pressure.

3.If no problem is found during inspection in step 1 and step 2, then the problem is with the TCM itself. In this case, replace the TCM and inspect the vehicle again.

4.Re- inspecting TCM: Install the TCM that was determined to have malfunctioned from step 3 in another vehicle. Reset the error code and then check the operation in that vehicle. If the vehicle operates without any problems, then inspect the first vehicle with the initial problem again.

• Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.(Refer to General Information - "Lift and Support Points")

1.Perform the line pressure removal mode off procedure by using the diagnostic tool.

2.Turn ignition switch OFF and disconnect the negative (-) battery cable.

3.Remove the air cleaner assembly and air duct.(Refer to Engine Mechanical System - "Air cleaner")

4.Loosen the TCM upper mounting bolts (A).

Tightening torque :9.8 - 11.7 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.6 lb·ft)

5.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Under Cover")

6.Disconnect the TCM connector (A).

7.Remove the TCM (C) after loosening the mounting bolts (A, B).

Tightening torque:(A) : 9.8 - 11.7 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.6 lb-ft) (B) : 7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb-ft)

• Be careful not to damage the TCM pin part (A) when removing the TCM assembly.

1. To install, reverse the removal procedures.

• Make sure the TCM pin part (A), and E-module part (B) fit when installing.

• When reinstalling the TCM, must be replaced the TCM connector moungting bolt (A) with new one and apply the oil to the O-ring (B) before tightening it.

2.Perform the air bleeding procedure by using the diagnostic tool.

3.Perform the factory mode exit procedure by using the diagnostic tool if replaced transmission with a new one.

4.Perform the clutch touch point learning procedure using the diagnostic tool after replacing TCM

5.Perform the touchpoint curve learning procedures.

• Perform to learn a touchpoint curve.

(1)Drive the accelerator pedal at a low angle after starting from a stop condition P → D, P → R (Drive while accelerating pedal from 10% to 30% and gradually increasing)

(2)Drive the accelerator pedal at a middle angle after starting from a stop condition P → D, P → R (Drive while accelerating pedal from 30% to 50% and gradually increasing)

• An accelerator pedal angle doesn't need to be driven exact but needs to drive while gradually increasing the angle to ensure a good learning procedure.

(3)Repeat the above procedure. (Test time 2 min)

6.Re- perform the touchpoint curve learning procedures after DCT learning procedure, when there is delayed acceleration or shift shock occurs. (Maximum 5 time)