Toyota Sienna Service Manual: Power Source Circuit

Toyota Sienna Service Manual / Seat / Rear no. 2 Seat assembly (w/ Power Stowing Function) / On-vehicle inspection / 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

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT FUSE (L-RR2 SEAT, R-RR2 SEAT)

INSPECT FUSE (L-RR2 SEAT, R-RR2 SEAT)

Remove the fuses from the R/B No. 3.
Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

2 CHECK HARNESS AND CONNECTOR (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (POWER SOURCE)

Remove the fold seat control ECU.
Disconnect the connectors from the fold seat control ECU.
Measure the voltage according to the value(s) in the table below.

Standard voltage: LH side

Standard voltage

RH side

Standard voltage

3 CHECK HARNESS AND CONNECTOR (GROUND)

CHECK HARNESS AND CONNECTOR (GROUND)

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

Standard resistance: LH side

Standard resistance

RH side

Standard resistance

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Indicator Circuit

DESCRIPTION This system has two indicator lights. One of the indicator lights is built into the fold seat switch. This indicator light receives power from the fold seat control ECU. It comes on or ...

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 fold ...

Other materials:

Disassembly
1. SEPARATE REAR DRIVE SHAFT INBOARD JOINT BOOT CLAMP (a) Using a screwdriver, remove the 2 rear drive shaft inboard joint boot clamps as shown in the illustration. 2. SEPARATE REAR DRIVE SHAFT INBOARD JOINT BOOT (a) Separate the rear drive shaft inboard joint boot from the inboard joint ...

Open in Rear Curtain Shield Squib LH Circuit
DTC B1636/88 Open in Rear Curtain Shield Squib LH Circuit DESCRIPTION The rear curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly LH. The circuit instructs the SRS to deploy when deployment conditions are met. DTC B1636/88 ...

Inspection
1. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH Release the seat belt (Buckle switch is ON). Check the resistance between the terminals. Standard If the result is not as specified, replace the inner belt assembly. Inspect the buckle switch. Fasten ...