Kia Optima Hybrid: Automatic Transaxle Control System / Transaxle Control Module (TCM) Schematic Diagrams
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Transaxle Control Module (TCM) Schematic Diagrams
| TCM connector and terminal function |
| TCM terminal function |
Connector [A]
| Pin | Description | Pin | Description |
| 2 | - | 33 | ON/OFF solenoid valve A (SS-A) |
| 3 | Line pressure control solenoid valve (LINE_VFS) | 34 | Ground (Power 1) |
| 4 | Engine clutch control solenoid valve (EC_VFS) | 35 | Ground (Power 2) |
| 5 | 35R clutch control solenoid valve (35R/C_VFS) | 36 | Sports mode down switch |
| 6 | Input speed sensor power | 37 | Sports mode up switch |
| 7 | Output speed sensor power | 38 | Sports mode select switch |
| 8 | Input speed sensor signal | 40 | Inhibitor switch signal "S1" |
| 9 | Output speed sensor signal | 47 | Solenoid supply power 1 |
| 17 | Underdrive brake control solenoid valve (UD/B_VFS) | 48 | Solenoid supply power 2 |
| 49 | TCM Input power 1 (For solenoid) | ||
| 18 | 26 brake control solenoid valve (26/B_VFS) | 50 | TCM Input power 2 (For solenoid) |
| 19 | Shift lock solenoid | 51 | PWM_command |
| 20 | Overdrive clutch control solenoid valve (OD/C_VFS) | 52 | Status_OPU |
| 53 | Oil temperature sensor (-) | ||
| 25 | Inhibitor switch signal "S2" | 54 | Oil temperature sensor (+) |
| 26 | Inhibitor switch signal "S3" | 55 | CAN communication line (HIGH) |
| 27 | Inhibitor switch signal "S4" | 56 | CAN communication line (Low) |
| 32 | ON/OFF solenoid valve B (SS-B) | 56 | CAN communication line (Low) |
| 33 | ON/OFF solenoid valve A (SS-A) | ? | ? |
Connector [B]
| Pin | Description | Pin | Description |
| 1 | Power ground | 4 | Battery power (B+) |
| 2 | Battery power (B+) | 5 | ECU ground |
| 3 | Power ground | 6 | Battery power (B+) |
TCM Terminal input/ output signal
| Pin | Description | Condition | Input/output value | |
| Type | Level | |||
| 3 | Line pressure control solenoid valve (LINE_VFS) | ? | Output | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| 4 | Engine clutch control solenoid valve (EC_VFS) | ? | Output | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| 5 | 35R clutch control solenoid valve (35R/C_VFS) | ? | Output | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| 6 | Input speed sensor power | ON | Power | 0V/7.5V |
| OFF | ||||
| 7 | Output speed sensor power | ON | Power | 0V/7.5V |
| OFF | ||||
| 8 | Input speed sensor signal | High | Input | 0.7V/1.4V |
| Low | ||||
| 9 | Output speed sensor signal | High | Input | 0.7V/1.4V |
| Low | ||||
| 17 | Underdrive brake control solenoid valve (UD/B_VFS) | ? | Output | 0V/Battery voltage level 9V < Battery voltage level < 16V Power supply : V_SOL2 |
| 18 | 26 brake control solenoid valve (26/B_VFS) | ? | Output | 0V/Battery voltage level 9V < Battery voltage level < 16V Power supply : V_SOL2 |
| 19 | Shift lock solenoid | High | Output | 0V/Battery voltage level9V < Battery voltage level < 16V |
| Low | ||||
| 20 | Overdrive clutch control solenoid valve (OD/C_VFS) | ? | Output | 0V/Battery voltage level 9V < Battery voltage level < 16V Power supply : V_SOL1 |
| 22 | Rear lamp relay | R ON | Output | 0V/Battery voltage level 9V < Battery voltage level < 16 |
| Other | ||||
| 25 | Inhibitor switch signal "S2" | High | Input | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| Low | ||||
| 26 | Inhibitor switch signal "S3" | High | Input | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| Low | ||||
| 27 | Inhibitor switch signal "S4" | High | Input | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| Low | ||||
| 32 | ON/OFF solenoid valve B(SS-B) | High | Output | 0V / Battery voltage level 9V < Battery voltage level < 16V |
| Low | ||||
| 33 | ON/OFF solenoid valve A (SS-A) | High | Output | 0V / Battery voltage level 9V < Battery voltage level < 16V |
| Low | ||||
| 34 | Ground (Power 1) | ? ? | Ground | 0V |
| 35 | Ground (Power 2) | Ground | 0V | |
| 36 | Sports mode down switch | Down ON | Input | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| Other | ||||
| 37 | Sports mode up switch | Up ON | Input | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| Other | ||||
| 38 | Sports mode select switch | Sport mode | Input | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| Other | ||||
| 40 | Inhibitor switch signal "S1" | High | Input | 0V/Battery voltage level 9V < Battery voltage level < 16 |
| Low | ||||
| 47 | Solenoid supply power 1 | ON | Power | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| OFF | ||||
| 48 | Solenoid supply power 2 | ON | Power | 0V/Battery voltage level 9V < Battery voltage level < 16V |
| OFF | ||||
| 49 | TCM Input power 1 (For solenoid) | ? | Power | Battery voltage level 9V < Battery voltage level < 16V |
| 50 | TCM Input power 2 (For solenoid) | ? | Power | Battery voltage level 9V < Battery voltage level < 16 |
| 51 | PWM_command | ? ? | Output | 0V / Battery voltage level 9V < Battery voltage level < 16V |
| 52 | Status_OPU | Input | 0V / Battery voltage level 9V < Battery voltage level < 16V | |
| 53 | Oil temperature sensor (-) | ? | Ground | 0V |
| 54 | Oil temperature sensor (+) | ON? | Input? | ?0V/3.3V |
| OFF | ||||
| 55 | CAN communication line (HIGH) | High? | Command? | ? |
| Low? | ||||
| 56 | CAN communication line (Low)? | High? | Command? | ? |
| Low? | ||||
| Circuit Diagram |
Transaxle Control Module (TCM) Description and Operation
Description Transaxle Control Module (TCM) is the automatic transaxle''s brain. The module receives and processes signals from various sensors and implements a wide range of transaxle controls to ensure ...
Transaxle Control Module (TCM) Repair procedures
Inspection TCM Problem Inspection Procedure 1. TEST TCM GROUND CIRCUIT: Measure resistance between TCM and chassis ground using the backside of TCM harness connector as TCM side check point. If the problem ...
Other information:
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: General Information
General 1. Basically, all measurements in this manual are taken with a tracking gauge. 2. When a measuring tape is used, check to be sure there is no elongation, twisting or bending. 3. For measuring dimensions, both projected dimension and actual-measurement dimension are used in this manual. Measurement ...
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Troubleshooting
Basic Troubleshooting Basic Troubleshooting Guide Customer Problem Analysis Sheet Basic Inspection Procedure Measuring Condition of Electronic Parts'' Resistance The measured resistance at high temperature after vehicle running may be high or low. So all resistance must be measured at near to normal ...
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