Kia Optima: Inspection - Transaxle Control Module (TCM). Repair procedures - Automatic Transaxle Control System - Automatic Transaxle System - Kia Optima TF 2011-2024 Service ManualKia Optima: 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 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.
4. 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).

Transaxle Control Module (TCM). Repair procedures
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Replacement
1. Turn ignition switch OFF. 2. Disconnect the negative (-) battery cable. 3. Disconnect the TCM connector (A). 4. Re ...

See also:

Removal
[Front Seat] 1. Remove the front seat assembly. (Refer to Body group - "Front Seat") 2. Remove the seat back cover and cushion cover.(Refer to Body group ...

Panorama sunroof
If your vehicle is equipped with a sunroof, you can slide or tilt your sunroof with the sunroof control lever located on the overhead console. The sunroof can only be opened, closed, or tilted wh ...

Trailer Towing
We do not recommend using this vehicle for trailer towing. ...

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