2019-2022 Toyota Sienna Wiring Diagram


This is the original OEM manual for the 2019-2022 Toyota Sienna Wiring Diagrams in PDF format.

This is the original factory OEM manual for the 2019-2022 Toyota Sienna Wiring Diagram, Fourth Generation (XL40), in PDF.

File Format PDF
File Language English
You’ll Get 25.2 MB
Pages Count 1,200
Delivery Method Instant Download
Searchable & Printable YES

Get the same comprehensive level of information that your Toyota local dealer technicians have in a simple PDF format. It’s simple and straightforward with only the manufacturer’s authorized service and repair procedures which you can follow and do yourself.

This electrical wiring manual includes the procedures for maintenance, disassembling, reassembling, inspection, and adjustment of electrical components and diagnostics for guidance of experienced technicians. Please use this manual to ensure complete repair work to keep your vehicle in optimum condition.

Contents: 2019-2022 Toyota Sienna Wiring Diagram

  • Abbreviation
  • Fuse List Rating and Location
  • Relay Location and Harness Routing and Connectors
  • Overall System Wiring Diagrams
  • Electrical Wiring Diagrams
  • Sienna HV (Hybrid) Parts Location, 
  • Sienna Hybrid Battery System
  • Sienna Hybrid Control System
Download Full Contents Index

Sample Pages: 

CAUTION: Please note that this electrical wiring manual is made for the use of persons who have special techniques and certifications. If non-specialized or uncertified technicians perform repairs or services only using this manual or without proper equipment or tools, this may cause severe injury to you or other persons nearby and also cause damage to your vehicle. Please follow the instructions to prevent dangerous operations and damage to your vehicle.



File Format


File Language


You'll Get

25.2 MB

Page Count


Instant Download