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 MANUALSTOYOTA2006SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISBODY AND FRAMESEATSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSNON-TROUBLE CODE PROCEDURESMEMORY SWITCH CIRCUIT
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Memory Switch Circuit
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Memory Switch Circuit
Memory Switch Circuit
DESCRIPTION
The seat memory switch sends signals to the position control ECU and switch assembly via multiplex communication to memorize a given seat position. This memory system does not use a position sensor. The seat position is detected by counting pulses that are output when the motor turns. If there is no pulse output from the motor, the motor will stop operating. The seat memory switch is later used to send signals to the position control ECU to return to one of the memorized positions.
The power seat memory operation is performed only when the ignition switch is in the ON position and the park/neutral position switch is in the P (park) position.


INSPECTION PROCEDURE
DESCRIPTION
The seat memory switch sends signals to the position control ECU and switch assembly via multiplex communication to memorize a given seat position. This memory system does not use a position sensor. The seat position is detected by counting pulses that are output when the motor turns. If there is no pulse output from the motor, the motor will stop operating. The seat memory switch is later used to send signals to the position control ECU to return to one of the memorized positions.
The power seat memory operation is performed only when the ignition switch is in the ON position and the park/neutral position switch is in the P (park) position.
Wiring Diagram:
Step 1-2:
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.