Toyota RAV4 manuals

Toyota Sienna Service Manual: Memory Switch Circuit

DESCRIPTION

When the seat memory switch M1 or M2 is pressed, the position control ECU & switch (Seat ECU) transmits a signal of the memorized mirror position to the outer mirror control ECU. Then, the outer mirror control ECU drives the mirror motor.

HINT: The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See the Multiplex Communication System).

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.
  2.  Ignition switch on.
  3.  Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
  4.  Check the DATA LIST for proper function of the seat memory switch.

D-SEAT

D-SEAT

OK: Tester displayed MEM.

2 INSPECT SEAT 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 when the switch is operated.

Standard resistance

Standard resistance

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

CHECK HARNESS AND CONNECTOR

  1. Disconnect the S33 switch connector.
  2.  Disconnect the O9 ECU connector.
  3.  Measure the resistance according to the value(s) in the table below.

Resistance

Resistance

REPLACE OUTER MIRROR CONTROL ECU

Position Sensor Circuit
DESCRIPTION When SET and 1 or 2 are pressed, the position sensor detects the mirror position and sends the signal to the outer mirror control ECU. Then when position 1 or 2 is pressed, the outer ...

Power Source Circuit
DESCRIPTION This is the power source circuit for the outer mirror control ECU. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT OUTER MIRROR CONTROL ECU (POWER SOURCE) Disconnect the O9 o ...

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Problem symptoms table
Use the table below to find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts. Front A/C: Rear A/C: ...

Problem symptoms table
HINT: Proceed to the troubleshooting for each circuit in the table below. AIRBAG SYSTEM Symptom Suspected Area The SRS warning light goes off after the primary check, but then comes on. SRS Warning Light Remains ON When the ignition switch is turned to t ...

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