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.
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HOMESERVICE MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISBODY AND FRAMELOCKSPOWER LOCKSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSREAR DOOR UNLOCK DETECTION SWITCH RH CIRCUIT
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Rear Door UNLOCK Detection Switch RH Circuit
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Rear Door UNLOCK Detection Switch RH Circuit
Rear Door UNLOCK Detection Switch RH Circuit
DESCRIPTION
The rear left side door unlock detection switch is built into the rear left side door lock assembly. The switch turns on when the rear left side door is locked and turns off when the door is unlocked.
The body ECU is connected to the rear left side door lock assembly via terminal LSWR and rear left side door lock/unlock state signals are input to the ECU.
The body ECU applies voltage to the door unlock detection switch via terminal LSWR. When the door unlock detection switch is on (there is continuity between the switch terminals), a lock state signal is input to the ECU. When the switch is off (there is no continuity between the switch terminals), an unlock state signal is input.
INSPECTION PROCEDURE
DESCRIPTION
The rear left side door unlock detection switch is built into the rear left side door lock assembly. The switch turns on when the rear left side door is locked and turns off when the door is unlocked.
The body ECU is connected to the rear left side door lock assembly via terminal LSWR and rear left side door lock/unlock state signals are input to the ECU.
The body ECU applies voltage to the door unlock detection switch via terminal LSWR. When the door unlock detection switch is on (there is continuity between the switch terminals), a lock state signal is input to the ECU. When the switch is off (there is no continuity between the switch terminals), an unlock state signal is input.
Wiring Diagram:
Step 1:
Step 1(continued)-2:
Step 3:
INSPECTION PROCEDURE
RENDER: 1.0x
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.