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 ...

Other materials:

Removal
1. DRAIN BRAKE FLUID NOTICE: Wash brake fluid off immediately if it adheres to any painted surface. 2. DISCONNECT BATTERY NEGATIVE TERMINAL 3. REMOVE AIR CLEANER ASSEMBLY WITH HOSE 4. REMOVE BRAKE ACTUATOR WITH BRACKET (a) Release the latch of the brake actuator connector to disconnect the c ...

Hazard warning switch
INSPECTION 1. HAZARD WARNING SIGNAL SWITCH ASSEMBLY  Check that there is resistance between the terminals at each switch position as shown in the chart. Resistance Inspect illumination operation.  Connect the positive (+) lead from the battery to the termina ...

Inspection
1. INSPECT CRANKSHAFT POSITION SENSOR  Using an ohmmeter, measure the resistance between the terminals. Standard resistance NOTICE:  "Cold" and "Hot" mean the temperature of the coils themselves. "Cold" is from -10C (14F) to 50C (122F ...

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