Toyota RAV4 manuals

Toyota Sienna Service Manual: System description

1. GENERAL DESCRIPTION

  1.  The power seat control system is equipped with the following function:
  1.  The power seat control system (w/ memory) is equipped with the following functions:

2. FUNCTION OF MAIN COMPONENT (w/ MEMORY)

  1.  The following functions are available.

Components

Function

Seat slide motor Slides the driver side seat back and forth based on signals from the position control ECU and switch assembly (power seat control switch and ECU).
Seat reclining motor Reclines the driver side seat back and forth based on signals from the position control ECU and switch assembly (power seat control switch and ECU).
Seat front vertical motor Moves the front part of the driver side seat cushion up and down based on signals from the position control ECU and switch assembly (power seat control switch and ECU).
Seat lifter motor Moves the driver side seat cushion up and down based on signals from the position control ECU and switch assembly (power seat control switch and ECU). This motor operates, and driver side seat rear vertical raises and lowers, and driver side seat rear vertical raises and lowers.
Set switch Memory switch When the set and memory switches are pressed simultaneously, SET, 1 or 2 switch signal is input to the power window regulator switch assembly (power window master switch) and sends the seat memory switch signal via the multiplex communication system.

When only the memory switch is pressed, SET, 1 or 2 switch signal is input to power window regulator switch assembly (power window master switch) and driver side seat position changes according to memory.

Lumbar support adjuster motor Receives signal from lumber front power seat switch, motor operates, and lumber support can be adjusted
Front power seat switch (reclining, lifter, slide, front vertical) Based on switches operated, seat adjuster signals are input into position control ECU and seat is adjusted accordingly
Lumbar front power seat switch Based on switches operated, seat is adjusted accordingly

3. SYSTEM OPERATION

  1.  The front power seats adjustment and position memory are shown in the chart below

SYSTEM OPERATION

*: with Seat Position Memory System In the memory function, the memory switch operation signal is transferred from the outer mirror control ECU LH to the position control ECU and switch assembly (power seat control switch and ECU) via the multiplex communication line. Then, either the seat position is stored in memory or the previously stored seat position is recalled to set the appropriate seat position.

Precaution
1. GENERAL PRECAUTION  When using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur. PARTS LOCATI ...

How to proceed with troubleshooting
HINT:  Use this procedure to troubleshoot the front power seat control system.  The intelligent tester should be used in steps 3 and 5. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER P ...

Other materials:

Open in Front Pretensioner Squib RH Circuit
DTC B0131/64 Open in Front Pretensioner Squib RH Circuit DESCRIPTION The front pretensioner squib RH circuit consists of the center airbag sensor assembly and the front seat outer belt assembly RH. This circuit instructs the SRS to deploy when deployment conditions are met. DTC B0131/64 i ...

Data list / active test
1. DATA LIST HINT: Using the intelligent tester to read the DATA LIST allows the values or states of switches, sensor, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered ...

Unlocking and locking the doors from the outside
Entry function (vehicles with a smart key system) Carry the electronic key to enable this function. Grip the driver’s door handle to unlock the door. Grip the passenger’s door handle to unlock all the doors.* Make sure to touch the sensor on the back of the handle. The doors ...

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