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.
Checking Opening Using The Key: Notes
This fault-tracing assumes that the lock cylinder is not mechanically defective.
Check door control module connector A and the lock unit connector. Check for contact resistance and oxidation.
Check the cable between door control module connector terminal #A6 and lock unit connector terminal #4. Check for an open-circuit.
Check the cable between door control module connector terminal #A12 and lock unit connector terminal #1. Check for an open-circuit.
Check the cable between door control module connector terminal #A13 and lock unit connector terminal #5. Check for an open-circuit.
If no fault was found, replace the lock unit.
Other information:
- see SIGNAL SPECIFICATION
- see CONNECTING THE BREAKOUT BOX
- To access the driver/passenger door module (DDM/PDM) connector, see PASSENGER DOOR MODULE (PDM), REPLACING
- To access or replace the lock unit, see LOCK MECHANISM FRONT SIDE DOOR, REPLACING
- see CHECKING WIRING AND TERMINALS
- Continue
Refer to SYMPTOM VERIFICATION
NO RELATED
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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.