Toyota RAV4 manuals

Toyota Sienna Service Manual: Driving Position Memory Switch Circuit (w/ Memory)

Toyota Sienna Service Manual / Seat / Front power seat control system / On-vehicle inspection / Driving Position Memory Switch Circuit (w/ Memory)

DESCRIPTION

The seat memory switch 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 is later used to send signals to the front power seat switch to return the seat to one of the memorized positions.

The power seat memory operation can be performed only when the ignition switch is on and the shift lever is in the P position.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester (with CAN VIM) to the DLC3.
  2. Turn the ignition switch on.
  3.  Read the DATA LIST.

D_SEAT (Position control ECU and switch assembly)

Position control ECU and switch assembly

OK: Condition status can be displayed.

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2 INSPECT SEAT MEMORY SWITCH (DRIVING POSITION MEMORY SWITCH)

INSPECT SEAT MEMORY SWITCH

  1. Remove the seat memory switch.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH CIRCUIT)

CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH CIRCUIT)

  1. Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

4 CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU LH - SEAT MEMORY SWITCH)

CHECK HARNESS AND CONNECTOR

  1. Disconnect outer mirror control ECU LH connector.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPLACE OUTER MIRROR CONTROL ECU LH

Power Seat Motor Circuit
DESCRIPTION When the power seat control switch is operated, a command signal is sent to the position control ECU and switch assembly (power seat control switch and ECU). The front power seat swi ...

ECU Power Source Circuit
DESCRIPTION The position control ECU and switch assembly (power seat control switch and ECU) is contained in the switch assembly. During manual operation, only one switch signal is accepted. If ...

Other materials:

Removal
1. REMOVE FRONT WHEEL 2. REMOVE FRONT AXLE HUB LH NUT HINT: (See page AH-4) SST 09930-00010 3. SEPARATE SPEED SENSOR FRONT LH HINT: (See page AH-4) 4. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY LH HINT: (See page AH-4) 5. REMOVE FRONT DISC 6. SEPARATE TIE ROD ASSEMBLY LH HINT: (See pa ...

Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION This circuit sends a signal to the stereo component amplifier to mute noise. Because of that, the noise produced by changing the sound source ceases. If there is an open in the circuit, noise can be heard from the speakers when changing the sound source. If there is a short i ...

Power Slide Door does not Fully Open
DESCRIPTION  When the LH / RH rear window is open 105 mm (5.91 in.) or more, the slide door half-open stopper is activated to force the slide door to stop at approximately 105 mm (5.91 in.) from the fully open position. This is caused by the jam protection function between the sli ...

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