Hyundai Sonata: Dual Clutch Transmission Control System / Inhibitor Switch Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / DCT (Dual Clutch Transmission) System / Dual Clutch Transmission Control System / Inhibitor Switch Repair procedures

Inspection

•	Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

Inspection flow

Items to check

1.	Inspect DTC code.

Inspect whether N setting matches.

A.	Adjust N setting (refer to automatic transmission system - "inhibitor switch")

Inspect shift cable separation.

A.	Adjust shift cable separation (refer to automatic transmission system - "shift cable")

Inspect whether connector is connected.

A.	Inspect connector thoroughly for looseness, poor connection, bending, corrosion, contamination, deformation, or damage.

Turn ignition key "ON" and engine "OFF" and measure the power supplied to inhibitor switch circuit and voltage between ground.

Specification: approx. 12 V

C.	Fix the pin wiring when connector pin wiring is faulty (refer to ETM - "wiring repair").

Inspect ground condition on reversing light circuit.

A.	Check the ground location of reversing light (refer to ETM - "harness location map").

B.	Reattach reversing light if ground condition is faulty.

Inspect wiring connection on junction box power terminal and fuse lamp.

A.	Check whether fuse holder is separated and holder is holding the fuse tight.

B.	Attach tester fuse to check if it is connected appropriately.

C.	Check whether fuse capacity is appropriate for each circuit.

D.	Check if fuse is damaged.

E.	Check pulling of fuse fixing wiring, inflow of foreign substance, and arrangement condition of terminal.

F.	Relocate the terminal that has been pulled and inspect using the method explained above.

G.	When problem is not solved, refer to the circuit diagram wiring repair instructions to fix or replace the terminal.

Inspect inhibitor switch signal.

A.	Turn ignition key "ON" and engine "OFF".

Measure the voltage between each terminal and chassis ground when shifting lever to "P, R, N, D" range.

Specified value: refer to specification "signal code" table

Removal

1.	Make sure vehicle does not roll before setting shift lever to "N" position.

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

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

4.	Disconnect the inhibitor switch connector (A)

5.	Remove the shift cable mounting nut (B).

6.	Remove the manual control lever (B) and the washer after removing a nut (A).

7.	Remove the inhibitor assembly (A) after removing the bolts.

Installation

1.	Check that the shift lever is placed in the "N" position.

2.	Lightly tighten the inhibitor switch mounting bolts (B) after installing the inhibitor switch (A).

3.	Lightly tighten the manual control lever mounting nut (A) after installing the manual control lever (B).

4.	Align the hole (A) in the manual control lever with the "N" position hole (B) of the inhibitor switch and then insert the inhibitor switch guide pin (SST No.:09480-A3800).

Tighten the bolts (B) after tightening the nut (A) with the specified torque.

Tightening torque

[A] 17.7 ~ 24.5 N.m (1.8 ~ 2.5 kgf.m, 13.0 ~ 18.1 lb-ft)

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

6.	Connect the inhibitor switch connector (A).

7.	Lightly tighten the nut (B) after connected the shift cable (C) in the manual control lever (D).

8.	Push shift cable (C) lightly to "F" direction shown to eliminate free play of shift cable.

Tighten the nut(B) with the specified torque.

Tightening torque :

9.8 ~ 14.7 N.m (1.0 ~ 1.5 kgf.m, 7.2 ~ 10.8 lb-ft)

10.	Remove the inhibitor switch guide pin (SST No.:09480-A3800) from the hole.

11.	Install the air cleaner and air duct. (Refer to Engine Mechanical System - "Air Cleaner")

12.

Install the battery and battery tray.

(Refer to Engine Electrical System - "Battery")

•	Check that operating surely at each range of the inhibitor switch corresponding to each position of shift lever.

Inhibitor Switch Troubleshooting

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