Hyundai Venue: Automatic Transaxle Control System / Transaxle Control Module (TCM). Repair procedures

Hyundai Venue (QX) (2020-2024) Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Transaxle Control Module (TCM). Repair procedures

Inspection

▶ Transaxle Control Module(TCM) Problem Inspection Procedure

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 is found, repair it.

Specification : Below 1Ω

2.	TEST TCM CONNECTOR: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.

3.	If problem is not found in Step 1 and 2, the TCM could be faulty. If so, make sure there were no DTC's before swapping the TCM with a new one, and then check the vehicle again. If DTC's were found, examine this first before swapping TCM.

RE-TEST THE ORIGINAL TCM: Install the original TCM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original TCM with a new one. If problem does not occur, this is intermittent problem (Refer to “Intermittent Problem Inspection Procedure” in Basic Inspection Procedure).

Removal

1.	Perform the oil pressure characteristics backup procedure using the diagnostic tool when replacing with a new TCM.

2.	Turn ignition switch OFF.

3.	Disconnect the battery (-) terminal (A).

Disconnect the battery (+) terminal (B).

Tightening torque:

(A) 4.0 - 6.0 N.m (0.4 - 0.6 kgf.m, 3.0 - 4.4 lb-ft)

(B) 7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb-ft)

Hyundai Venue. Transaxle Control Module (TCM). Repair procedures

Remove the battery mounting bracket (A) and the battery (B).

Tightening torque :

9.0 - 14.0 N.m (0.9 - 1.4 kgf.m, 6.6 - 10.3 Ib-ft)

Hyundai Venue. Transaxle Control Module (TCM). Repair procedures

6.	Disconnect the TCM connector (A).

7.	Remove the bolts (A) and nut (B).

8.	Remove the TCM (C).

Installation

1.	To install, reverse the removal procedure.

2.	Oil-pressure characteristics input (TCM exchange)

3.	Perform the procedures related in the ECM after replacing the TCM. (Refer to Engine Control / Fuel System - "Engine Control Module")

4.	Perform TCM learning after replacing the transaxle to prevent slow transaxle response, jerky acceleration and jerky startup. (Refer to Automatic Transaxle Control System - "Repair procedures")

Transaxle Control Module (TCM). Schematic diagrams

TCM Connector Connector [A] Pin Description 2 35R clutch control solenoid valve (35R/C_VFS) 4 26 brake control solenoid valve (26/B_VFS) 5 Underdrive brake control solenoid valve (UD/B_VFS) 8 Inhibitor switch signal S2 (R) 19 Line pressure control solenoid valve (LINE_VFS) 21 Input speed sensor power 22 Output speed sensor power 32 Torque converter control solenoid valve (T/CON_VFS) 33 VB (Battery voltage) 34 Solenoid supply power 2 37 Output speed sensor signal 38 Inhibitor switch signal S4 (D) 39 Inhibitor switch signal S1 (P) 40 Manual mode up shift 42 Manual mode select switch 43 Oil temperature sensor (+) 45 VB (Battery voltage) 46 ON/OFF solenoid valve A(SS-A) 47 Overdrive clutch control solenoid valve (OD/C_VFS) 48 VB (Battery voltage) 49 Solenoid supply power 1 52 Input speed sensor signal 54 Inhibitor switch signal S3 (N) 57 Manual mode down shift 58 Oil temperature sensor (-) TCM Terminal input/ output signal Connector [A] Pin Description Condition Input/output value Type Level 2 35R clutch control solenoid valve (35R/C_VFS) - Output 0V/Battery voltage level 9V < Battery voltage level < 16V 4 26 brake control solenoid valve (26/B_VFS) - Output 0V/Battery voltage level 9V < Battery voltage level < 16V 5 Underdrive brake control solenoid valve (UD/B_VFS) - Output 0V/Battery voltage level 9V < Battery voltage level < 16V 8 Inhibitor switch signal S2 (R) High Input 0V/Battery voltage level Low 9V < Battery voltage level < 16V 19 Line pressure control solenoid valve (LINE_VFS) - Output 0V/Battery voltage level 9V < Battery voltage level < 16V 21 Input speed sensor power ON Power 0V/9V OFF 22 Output speed sensor power ON Power 0V/9V OFF 32 Torque converter control solenoid valve (T/CON_VFS) - Output 0V/Battery voltage level 9V < Battery voltage level < 16V 34 Solenoid power 2 Power 0V/Battery voltage level 9V < Battery voltage level < 16V 37 Output speed sensor signal High Input 0...

Transaxle Oil Temperature Sensor. Description and operation

Description • Transaxle oil temperature sensor monitors the automatic transaxle fluid's temperature and conveys the readings to TCM...

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