Kia Forte BD Quiz
DCT (Dual Clutch Transmission) System

DCT Control Module (TCM)

In this manual: DCT (Dual Clutch Transmission) System
General Information — 8Maintenance — 32Engine Mechanical System — 47Engine Electrical System — 17Emission Control System — 10Engine Control System/Fuel System — 32Clutch System — 11Manual Transmission — 11DCT (Dual Clutch Transmission) System — 16Drive Shaft and Axle — 8Suspension System — 26Steering — 9Restraints — 11Brake System — 27Body (Interior and Exterior) — 119Body Electrical System — 98Heating, Ventilation, and Air Conditioning — 27
8steps
~48min
2/5difficulty
Done 0 of 8

Circuit Diagrams

TCM Connector

TCM Terminal Function

Connector [A]

Pin Description Pin Description
1 Clutch actuator (clutch motor 1 (odd) V-phase) 15 Clutch actuator (clutch motor 1 (odd) sensor ground)
2 Clutch actuator (clutch motor 2 (even) V-phase) 18 Clutch actuator (clutch motor 1 (odd) Hall 1)
3 Select actuator (select solenoid 2 (even) sensor ground) 19 Clutch actuator (clutch motor 1 (odd) power)
4 Select actuator (select solenoid 1 (odd) push) 20 Select actuator (select solenoid 1 (odd) sensor power)
5 Clutch actuator (clutch motor 1 (odd) U-phase) 21 Select actuator (select solenoid 2 (even) sensor power)
6 Clutch actuator (clutch motor 2 (even) U-phase) 22 Select Actuator (Select Solenoid 2 (EVEN) Sensor Output)
7 Select actuator (select solenoid 1 (odd) sensor ground) 23 Clutch actuator (clutch motor 2 (even) Hall 2)
8 Select actuator (select solenoid 2 (even) pull) 24 Clutch actuator (clutch motor 2 (even) Hall 3)
9 Clutch actuator (clutch motor 1 (odd) W-phase) 25 Clutch actuator (clutch motor 2 (even) sensor ground)
10 Clutch actuator (clutch motor 2 (even) W-phase) 26 Select Actuator (Select Solenoid 1 (ODD)_Sensor Output)
11 Select actuator (select solenoid 1 (odd) pull) 28 Clutch actuator (clutch motor 2 (even) Hall 1)
12 Select actuator (select solenoid 2 (even) push) 29 Clutch actuator (clutch motor 2 (even) sensor power)
13 Clutch actuator (clutch motor 1 (odd) Hall 2) 30 Select actuator (select solenoid 1 (odd) sensor ground)
14 Clutch actuator (clutch motor (odd) Hall 3) 31 Select actuator (select solenoid 2 (even) sensor ground)

Connector [B]

Pin Description Pin Description
3 IGN/START input 42 Shift actuator (shift motor 2 (even) Hall 3)
5 "P" Position Switch Input 43 "M" lock switch input signal
6 Input Signal from "R" Lock Switch 44 CAN1 communication port 1 High
7 "D" lock switch input signal 45 CAN1 communication port 1 Low
8 Manual mode "Down" switch 48 Flexible ray high (BP)
9 Input speed sensor 2 (even) signal 49 Input Speed Source 1 (Odd)
13 Shift actuator (shift motor 1 (odd) Hall 2) 50 Input Speed Signal 1 (Odd)
14 Shift actuator (shift motor 1 (odd) Hall 3) 54 Shift actuator (shift motor 2 (even) sensor power)
17 Low Battery Charge VBD 55 Shift actuator (shift motor 2 (even) Hall 1)
19 Manual mode "Select" switch 56 Shift actuator (shift motor 2 (even) sensor ground)
20 Input Signal from "N" Lock Switch 57 Power Ground 1 for High-Current Modules
21 Manual mode "Up" switch 58 Power Ground 2 for High-Current Modules
23 Input speed source 2 (even) 59 Shift actuator (shift motor 2 (even) W-phase)
24 5V Backup Power Output 60 Shift actuator (shift motor 1 (odd) W-phase)
26 Shift actuator (shift motor 1 (odd) sensor power) 61 Power ground 3 for high-current modules
27 Shift actuator (shift motor 1 (odd) Hall 1) 63 Shift actuator (shift motor 2 (even) V-phase)
28 Shift actuator (shift motor 1 (odd) sensor ground) 64 Shift Actuator (Shift Motor 1 (ODD)_Phase V)
30 CAN2 communication port 2 High 65 Motor 1 Supply Voltage from Direct Battery
31 CAN2 communication port 2 Low 66 Motor 2 Supply Voltage from Direct Battery
34 Flexible ray bus, BM 67 Shift actuator (shift motor 2 (even) U-phase)
41 Shift actuator (shift motor 2 (even) Hall 2) 68 Shift actuator (shift motor 1 (odd) U-phase)

Terminal input/output signal

Connector [A]

Pin Description Condition Input/Output Value
Type Level
1 Clutch actuator (clutch motor 1 (odd) V-phase) Low Output 0 V
PWM 0 V ~ battery voltage
2 Clutch actuator (clutch motor 2 (even) V-phase) Low Output 0 V
PWM 0 V ~ battery voltage
3 Select actuator (select solenoid 2 (even) sensor ground) Static on Output 0 V
4 Select actuator (select solenoid 1 (odd) push) On Output Battery Voltage
Off 0 V
5 Clutch actuator (clutch motor 1 (odd) U-phase) Low Output 0 V
PWM 0 V ~ battery voltage
6 Clutch actuator (clutch motor 2 (even) U-phase) Low Output 0 V
PWM 0 V ~ battery voltage
7 Select actuator (select solenoid 1 (odd) sensor ground) Static on Output 0 V
8 Select actuator (select solenoid 2 (even) pull) On Output Battery Voltage
Off 0 V
9 Clutch actuator (clutch motor 1 (odd) W-phase) Low Output 0 V
PWM 0 V ~ battery voltage
10 Clutch actuator (clutch motor 2 (even) W-phase) Low Output 0 V
PWM 0 V ~ battery voltage
11 Select actuator (select solenoid 1 (odd) pull) On Output Battery Voltage
Off 0 V
12 Select actuator (select solenoid 2 (even) push) On Output Battery Voltage
Off 0 V
13 Clutch actuator (clutch motor 1 (odd) Hall 2) High Input 4.5 V
Low 0 V
14 Clutch actuator (clutch motor (odd) Hall 3) High Input 4.5 V
Low 0 V
15 Clutch actuator (clutch motor 1 (odd) sensor ground) Ground Ground 0 V
18 Clutch actuator (clutch motor 1 (odd) Hall 1) High Input 4.5 V
Low 0 V
19 Clutch actuator (clutch motor 1 (odd) sensor power) - Power 8.75 V
20 Select actuator (select solenoid 1 (odd) sensor power) - Power 8.75 V
21 Select actuator (select solenoid 2 (even) sensor power) - Power 8.75 V
22 Select Actuator (Select Solenoid 2 (EVEN) Sensor Output) High Input 4 V
Low 1 V
23 Clutch actuator (clutch motor 2 (even) Hall 2) High Input 4.5 V
Low 0 V
24 Clutch actuator (clutch motor 2 (even) Hall 3) High Input 4.5 V
Low 0 V
25 Clutch actuator (clutch motor 2 (even) sensor ground) Ground Ground 0 V
26 Select Actuator (Select Solenoid 1 (ODD)_Sensor Output) High Input 4 V
Low 1 V
28 Clutch actuator (clutch motor 2 (even) Hall 1) High Input 4.5 V
Low 0 V
29 Clutch actuator (clutch motor 2 (even) supply) - Power 8.75 V
30 Select actuator (select solenoid 1 (odd) sensor ground) Ground Ground 0 V
31 Select actuator (select solenoid 2 (even) sensor ground) Ground Ground 0 V

Connector [B]

Pin Description Condition Input/Output Value
Type Level
3 IGN/START input - Power 9 V < Battery Voltage < 16 V
5 "P" Position Switch Input High Input 9 V < Battery Voltage < 16 V
Low 0 V
6 Input Signal from "R" Lock Switch High Input 9 V < Battery Voltage < 16 V
Low 0 V
7 "D" lock switch input signal High Input 9 V < Battery Voltage < 16 V
Low 0 V
8 Manual mode "Down" switch High Input 9 V < Battery Voltage < 16 V
Low 0 V
9 Input speed sensor 2 (even) signal High Input 0.448 V
Low 0.224 V
13 Shift actuator (shift motor 1 (odd) Hall 2) High Input 4.5 V
Low 0,8
14 Shift actuator (shift motor 1 (odd) Hall 3) High Input 4.5 V
Low 0,8
17 Low Battery Charge VBD - Power 9 V < Battery Voltage < 16 V
18 Paddle shifter down signal High Input 9 V < Battery Voltage < 16 V
Low 0 V
19 Shift Lever Selector Switch High Input 9 V < Battery Voltage < 16 V
Low 0 V
20 Input Signal from "N" Lock Switch High Input 9 V < Battery Voltage < 16 V
Low 0 V
21 Manual mode "Up" switch High Input 9 V < Battery Voltage < 16 V
Low 0 V
23 Input speed source 2 (even) - Power 8.75 V
24 5V Backup Power Output - Power 5V
26 Shift actuator (shift motor 1 (odd) sensor power) Power 8.75 V
27 Shift actuator (shift motor 1 (odd) Hall 1) High Input 4.5 V
Low 0.8 V
28 Shift actuator (shift motor 1 (odd) sensor ground) Ground Ground 0 V
30 CAN2 communication port 2 High Write/Home CAN line Recessive: 2.5 V
Dominant: 3.5 V
31 CAN2 communication port 2 Low Write/Home CAN line Recessive: 2.5 V
Dominant: 1.5 V
34 Flexible ray bus, BM Idle CAN line Standby: 2.5 V
Differential Differential: 2.0 V/3.0 V
41 Shift actuator (shift motor 2 (even) Hall 2) High Input 4.5 V
Low 0.8 V
42 Shift actuator (shift motor 2 (even) Hall 3) High Input 4.5 V
Low 0.8 V
43 "M" Position Switch Input Signal High Input 9 V < Battery Voltage < 16 V
Low 0 V
44 CAN1 communication port 1 High Idle CAN line
Differential
45 CAN1 communication port 1 Low Idle/Diff. Write/Home Recessive: 2.5 V
Dominant: 3.5 V
48 Flexible Beam High (BP) Idle/Diff. CAN line Standby: 2.5 V
Differential: 2.0 V / 3.0 V
49 Input Speed Source 1 (Odd) - Power 8.75 V
50 Input Speed Signal 1 (Odd) High Input 0.448 V
Low 0.224 V
54 Shift actuator (shift motor 2 (even) sensor power) - Power 8.75 V
55 Shift actuator (shift motor 2 (even) Hall 1) High Input 4.5 V
Low 0.8 V
56 Shift actuator (shift motor 2 (even) sensor ground) Ground Ground 0 V
57 Power Ground 1 for High-Current Modules Ground Ground 0 V
58 Power Ground 2 for High-Current Modules Ground Ground 0 V
59 Shift actuator (shift motor 2 (even) W-phase) Low Output 0 V
PWM 0 V ~ battery voltage
60 Shift actuator (shift motor 1 (odd) W-phase) Low Output 0 V
PWM 0 V ~ battery voltage
61 Power ground 3 for high-current modules Ground Ground Ground
63 Shift actuator (shift motor 2 (even) V-phase) Low Output 0 V
PWM 0 V ~ battery voltage
64 Shift Actuator (Shift Motor 1 (ODD)_Phase V) Low Output 0 V
PWM 0 V ~ battery voltage
65 Motor 1 Supply Voltage from Direct Battery - Power 9 V < Battery Voltage < 16 V
66 Motor 2 Supply Voltage from Direct Battery - Power 9 V < Battery Voltage < 16 V
67 Shift actuator (shift motor 2 (even) U-phase) Low Output 0 V
PWM 0 V ~ battery voltage
68 Shift actuator (shift motor 1 (odd) U-phase) Low Output 0 V
PWM 0 V ~ battery voltage

Wiring Diagram

Repair Procedures

Inspection

  1. TCM Ground Circuit Inspection: Measure the resistance between the TCM and chassis ground. Use the rear side of the TCM harness connector as the check point on the TCM side.

    Specification: Less than 1 ohm

  2. TCM Connector Inspection: Disconnect the TCM connector and visually inspect the ground terminals on the TCM side and the harness side for bent pins or poor contact pressure.

  3. If the problem is not found in Steps 1 and 2, the TCM may be faulty. Replace the TCM with a new one, then recheck the vehicle. If the vehicle operates normally, the problem was most likely in the TCM.

  4. Retest of Original TCM: Install the original TCM (which may be faulty) in a known good vehicle and check the vehicle. If the problem recurs, replace the original TCM with a new one. If the problem does not occur, it is an intermittent problem. If the problem does not occur, the problem was most likely with other parts.

Removal

  1. Disconnect the negative (-) battery cable.

  2. Remove the Integrated Central Control Unit (ICU).

    (Refer to Body Electrical System - "Integrated Central Control Unit (ICU)")

  3. Disconnect the TCM connectors (A).

  4. Remove the TCM (A) after loosening the nuts.

Installation

  1. Install in the reverse order of removal.

Test yourself

A quick Kia Forte BD quiz: every answer comes with an explanation and a link to the manual page.