Kia Sedona: Transaxle Control Module (TCM) Repair procedures - Automatic Transaxle Control System - Automatic Transaxle System - Kia Sedona YP Service ManualKia Sedona: Transaxle Control Module (TCM) Repair procedures

Third generation YP (2014-2021) / Kia Sedona YP Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Transaxle Control Module (TCM) Repair procedures

Inspection
1.
TCM ground circuit test: Measure resistance between TCM and
chassis ground using the backside of TCM harness connector as TCM side check point.

Specification: Below 1Ω

2.
TCM connector test: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins or poor contact pressure.
3.
If problem is not found in Steps 1 and 2, the TCM could be faulty.
If so, replace the TCM with a new one, and then check the vehicle again. If the vehicle operates normally then the problem was likely with the TCM.
4.
The original TCM re-test : 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. If problem does not occur, this is problem of other parts.
Removal
1.
Disconnect the battery negative terminal.
2.
Remove the battery.
(Refer to Engine Electrical System - "Battery")
3.
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
4.
Disconnect the TCM connector (A).
5.
Remove the TCM (B) by loosening bracket nut & bolt.

Tightening torque:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

6.
Remove the TCM from the bracket by loosening the nuts (A).

Tightening torque:
8.8 ~ 11.8 N.m (0.9 ~ 1.2 kgf.m, 6.5 ~ 8.7 lb-ft)

Installation
1.
Install in the reverse order of removal.
   
Perform the TCM adaptive values learning procedure after replacing the TCM.
After replacing the TCM, perform the ECM-related procedures.
(Refer to Engine Control / Fuel System - "Engine Control Module")
Transaxle Control Module (TCM) Schematic Diagrams
TCM Connector TCM terminal function Connector [A] PinDescription10CAN (High)27Ignition switch29Sports mode up switch35CAN (Low)44Inhibitor switch signal ''S1''45Inhibitor switch signal ''S2''4 ...

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