Toyota RAV4 manuals

Toyota Sienna Service Manual: Fold Seat Switch Circuit

DESCRIPTION

When the fold seat switch is operated, a switch operation signal is sent to the fold seat control ECU. The ECU receives switch operation signals from each switch and activates the folding motor, reclining motor, and release actuator.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT FOLD SEAT CONTROL ECU

INSPECT FOLD SEAT CONTROL ECU

  1. Remove the fold seat control ECU with connectors still connected.
  2. Measure the voltage according to the value(s) in the table below.

Standard voltage: LH side

Standard voltage

RH side

Standard voltage

2 INSPECT FOLD SEAT SWITCH

  1. Remove the fold seat switch.

INSPECT FOLD SEAT SWITCH

  1. Disconnect the connector from the fold seat switch.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance: LH side

Standard resistance

RH side

Standard resistance

3 CHECK HARNESS AND CONNECTOR (FOLD SEAT SWITCH - FOLD SEAT CONTROL ECU)

CHECK HARNESS AND CONNECTOR

  1. Disconnect the connector from the fold seat control ECU.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance: LH side

Standard resistance

RH side

Standard resistance

4 CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - FOLD SEAT SWITCH)

CHECK HARNESS AND CONNECTOR

  1. Disconnect the connector from the back door courtesy switch.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance: LH side

Standard resistance

RH side

Standard resistance

5 INSPECT BACK DOOR COURTESY SWITCH

INSPECT BACK DOOR COURTESY SWITCH

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

Standard resistance

Standard resistance

6 CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - BODY GROUND)

CHECK HARNESS AND CONNECTOR

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

Standard resistance

Standard resistance

REPLACE FOLD SEAT CONTROL ECU

Power Source Circuit
DESCRIPTION Power is supplied to the fold seat control ECU through the L-RR2 SEAT and R-RR2 SEAT fuses. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT FUSE (L-RR2 SEAT, R-RR2 SEAT) Re ...

Folding Motor Circuit
DESCRIPTION The fold seat control ECU receives a switch operation signal from the fold seat switch and activates the folding motor. At this time, the Hall IC (seat cushion position sensor) detects ...

Other materials:

Terminals of ECU
1. CHECK POWER BACK DOOR ECU Disconnect the P13 and P14 ECU connectors, and check the voltage and resistance of each terminal of the wire harness side connectors If the result is not as specified, there may be a malfunction on the wire harness side.  Reconnect the ECU co ...

Terminals of ECU
1. CHECK POWER BACK DOOR ECU Disconnect the P13 and P14 ECU connectors, and check the voltage or resistance of each terminal of the wire harness side connectors If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the ECU connector ...

Removal
1. PRECAUTION CAUTION: Be sure to read "PRECAUTION" thoroughly before servicing. 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 seconds after disconnecting the cable to prevent the airbag working. 3. REMOVE FRONT SEAT ASSEMBLY (for Manual Seat) 4. REMOVE ...

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