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:

Standard bolt
HOW TO DETERMINE BOLT STRENGTH SPECIFIED TORQUE FOR STANDARD BOLTS HOW TO DETERMINE NUT STRENGTH HINT: *: Nut with 1 or more marks on one side surface of the nut. Use a nut with the same nut strength classification number (or greater) as the bolt strength classification number ...

Trailer towing tips
Your vehicle will handle differently when towing a trailer. Help to avoid an accident, death or serious injury, keep the following in mind when towing: Speed limits for towing a trailer vary by state or province. Do not exceed the posted towing speed limit. Toyota recommends that the ve ...

Data list / active test
1. USING INTELLIGENT TESTER  Connect the intelligent tester to the DLC3.  Monitor the ECU data by following the prompts on the tester screen. HINT: The intelligent tester has a "Snapshot" function which records the monitored data. Refer to the intelligent tester ope ...

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