Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Room Junction Block
2009 Toyota Sienna XLE, FWDSECTION Engine Room Junction Block
Engine Compartment Left (See Figure)
ENGINE ROOM J/B RELAY IDENTIFICATION
| RELAY DESCRIPTION |
|---|
| C/OPN Relay |
| Horn Relay |
| Defog Relay |
| Fuel Pump Relay |
| EFI Relay |
| Head Relay |
ENGINE ROOM J/B FUSE IDENTIFICATION LEGEND
| Fuse | System | |
|---|---|---|
| 7.5A | ALT-S | Charging |
| 10A | DOME | Accessory Meter and Garage Door Opener |
| Back Door Opener (w/o Power Back Door) | ||
| Interior Light | ||
| Multiplex Communication System (BEAN) | ||
| Theft Deterrent | ||
| Wireless Door Lock Control | ||
| 10A | ECU-B | ABS (w/ VSC), TRAC and VSC |
| ABS (w/o VSC) | ||
| Accessory Meter and Garage Door Opener | ||
| Audio System (10 Speaker w/o Navigation System) | ||
| Audio System (6 Speaker w/ Rear Seat Entertainment System) | ||
| Audio System (6 Speaker w/o Rear Seat Entertainment System) | ||
| Automatic Air Conditioning (Front) | ||
| Automatic Air Conditioning (Rear) | ||
| Automatic Light Control | ||
| Back Door Closer | ||
| Back Door Opener (w/o Power Back Door) | ||
| Charging | ||
| Combination Meter | ||
| Cruise Control | ||
| Door Lock Control | ||
| Dynamic Laser Cruise Control | ||
| Electronically Controlled Transmission and A/T Indicator | ||
| Engine Control | ||
| Engine Immobiliser System | ||
| Fog Light | ||
| Headlight | ||
| Illumination | ||
| Interior Light | ||
| Key Reminder | ||
| Light Auto Turn Off System | ||
| Manual Air Conditioning (Front) | ||
| Manual Air Conditioning (Rear) | ||
| Moon Roof | ||
| Multiplex Communication System (BEAN Bus) | ||
| Multiplex Communication System (BEAN) | ||
| Multiplex Communication System (CAN) Navigation System, Audio System | ||
| (10 Speaker w/ Navigation System) and Parking Assist (Rear View Monitor) | ||
| Parking Assist (Intuitive Parking Assist) | ||
| Power Back Door | ||
| Power Rear No.2 Seat with Stowing Function | ||
| Power Seat (Driver's Seat w/ Driving Position Memory) | ||
| Power Slide Door (LH) | ||
| Power Slide Door (RH) | ||
| Power Window (w/ Jam Protection) | ||
| Power Window (w/o Jam Protection) | ||
| Remote Control Mirror (w/ Driving Position Memory) | ||
| Seat Belt Warning | ||
| SRS | ||
| Starting | ||
| Taillight | ||
| Theft Deterrent | ||
| Tire Pressure Warning System | ||
| Wireless Door Lock Control | ||
| 10A | EFI NO.2 | Electronically Controlled Transmission and A/T Indicator |
| Engine Control | ||
| 10A | ETCS | Cruise Control |
| Dynamic Laser Cruise Control | ||
| Electronically Controlled Transmission and A/T Indicator | ||
| Engine Control | ||
| 10A | HORN | Horn |
| Multiplex Communication System (BEAN) | ||
| Theft Deterrent | ||
| Wireless Door Lock Control | ||
| 15A | HAZ | Turn Signal and Hazard Warning Light |
| 15A | H-LP LL | Fog Light |
| Headlight | ||
| Headlight Beam Level Control | ||
| Multiplex Communication System (BEAN) | ||
| Headlight | ||
| Multiplex Communication System (BEAN) | ||
| 15A | RAD NO.1 | Audio System (10 Speaker w/o Navigation System) |
| Audio System (6 Speaker w/ Rear Seat Entertainment System) | ||
| Audio System (6 Speaker w/o Rear Seat Entertainment System) | ||
| Navigation System, Audio System (10 Speaker w/ Navigation System) and Parking Assist (Rear View Monitor) | ||
| 20A | DRL | Headlight |
| Multiplex Communication System (BEAN) | ||
| 20A | EFI NO.1 | Cruise Control |
| Dynamic Laser Cruise Control | ||
| Electronically Controlled Transmission and A/T Indicator | ||
| Engine Control | ||
| 25A | A/F | Engine Control |
| 25A | DOOR NO.2 | Door Lock Control |
| Multiplex Communication System (BEAN) | ||
| Theft Deterrent | ||
| Wireless Door Lock Control | ||
| 30A | AM2 | Ignition |
| Starting | ||
| 30A | MAIN | Automatic Light Control |
| Fog Light | ||
| Headlight | ||
| Headlight Beam Level Control | ||
| Light Auto Turn Off System | ||
| Multiplex Communication System (BEAN) | ||
| Theft Deterrent | ||
| Wireless Door Lock Control | ||
| 30A | RAD NO.3 | Audio System (10 Speaker w/o Navigation System) |
| Navigation System, Audio System (10 Speaker w/ Navigation System) and Parking Assist (Rear View Monitor) | ||
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.