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.
Description & Operation: Inputs
Power is supplied at all times to Smart Entrance Control Unit (SECU) terminal No. 49 and to key switch terminal No. 2, through 7.5-amp fuse No. 24, located in the fuse block (J/B).
When the key switch is "ON" (ignition key is inserted in key cylinder), power is supplied through key switch terminal No. 1, to SECU terminal No. 25.
When the left front door switch is "ON", door is open, ground is supplied to SECU terminal No. 1, through left front door switch terminal No. 1, to left front door switch terminal No. 2, through body grounds "B11", "B22" and "D210".
When the right front door switch is "ON", door is open, ground is supplied to SECU terminal No. 2, through right front door switch terminal No. 1, to right front door switch terminal No. 2, through body grounds "B55" and "B75".
When all the doors switches are "ON", door is open, ground is supplied to SECU terminal No. 3, through front door switch terminals No. 3, to front door switch case grounds and through rear door switch terminals No. 1, to rear door switch case grounds and through back door switch terminal No. 2, to back door switch terminal No. 1, through body grounds "B11", "B22" and "D210".
When left "Lock/Unlock" switch is in "LOCK" position, ground is supplied to SECU terminal No. 5, through left "Lock/Unlock" switch terminal No. 6 and through body grounds "M77" and "M111".
When "Left Lock/Unlock" switch is in "UNLOCK" position, ground is supplied to SECU terminal No. 4, through left "Lock/Unlock" switch terminal No. 19 and through body grounds "M77" and "M111".
Remote controller signal is inputted to SECU (the antenna of the system is combined with SECU).
Use the Manual With the Right Hardware
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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.
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