LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> IS 250 AWD V6-2.5L (4GR-FSE) >> Repair and Diagnosis >> Body and Frame >> Seats >> Testing and Inspection >> Component Tests and General Diagnostics >> Front Power Seat Control System (w/ Seat Position Memory System) >> Driver Side Seat Memory Switch Circuit
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Driver Side Seat Memory Switch Circuit

Driver Side Seat Memory Switch Circuit

DESCRIPTION
The seat memory switch LH sends signals to the outer mirror control ECU LH via the multiplex communication system 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 LH is later used to send signals to the front power seat switch LH (position control ECU) to return the seat to one of the memorized positions.

- A/T:
The power seat memory switch LH operation can be performed only when the engine switch is on (IG) and the shift lever is in the P position.

- M/T:
The power seat memory switch LH operation can be performed only when the engine switch is on (IG), apply the parking brake, and seat the vehicle speed below 3 km/h (1.9 mph).

WIRING DIAGRAM

Wiring Diagram:





INSPECTION PROCEDURE

Step 1 - 2:




Step 2(Continued) - 3:




Step 4: