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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 81 (MULTIPLEX CONTROL SYSTEMS)COMPONENT LOCATIONS
2004 Toyota Celica GT, Standard
Component Locations
2004 Toyota Celica GT, StandardSECTION Component Locations
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For additional multiplex control system locations, see illustration. See Fig 1.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| Body Control Electronic Control Unit | Attached To Driver Side Junction Block |
| Center Airbag Sensor Assembly | Under Center Of Instrument Panel, On Floorpan Tunnel |
| Data Link Connector No. 1 (DLC1) | Right Rear Corner Of Engine Compartment, On Idle Air Control Valve Bracket |
| Data Link Connector No. 3 (DLC3) | Under Left Side Of Instrument Panel, To Right Of Driver Side Junction Block |
| Driver Door ECU | In Driver Door Armrest |
| Driver Side Junction Block | Left Side Of Instrument Panel, Behind Access Panel To Left Of Steering Column |
| Front Passenger Door ECU | In Passenger Door Armrest |
| Multi-Display Information Center | Center Of Instrument Panel, Just Above Air Vent Assembly |
| OPEN DOOR Indicator Light | On Service Reminder Indicators & Warning Buzzer Display Center |
| Service Reminder Indicators & Warning Buzzer Display Center | Part Of Multi-Display Information Center |
| Power Seat ECU (With Driving Position Memory) | Under Driver Seat |
| Theft Deterrent ECU | Behind Passenger Kick Panel |
| Wireless Door Lock Control Receiver | In Right "C" Pillar |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.