Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE
ECM Terminal Layout With TCM
ECM Terminal Layout Pinouts With TCM:
ECM Terminal Layout Pinouts With TCM
Connector B-01 (Ter. A1 - A27):
Connector B-01 (Ter. A28 - A35):
Connector B-01
Connector B-02 (Ter. B1 - B26):
Connector B-02
Connector B-03 (Ter. C1 - C28):
Connector B-03
Connector B-04 (Ter. D1 - D30):
Connector B-04
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.