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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 424 (TROUBLESHOOTING)DESCRIPTIONDRIVER SIDE JUNCTION BLOCK CONTROL SYSTEM
2004 Toyota Celica GT, Standard

DRIVER SIDE Junction Block CONTROL SYSTEM

2004 Toyota Celica GT, StandardSECTION DRIVER SIDE Junction Block CONTROL SYSTEM
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
DRIVER SIDE J/B CONTROL SYSTEM - TROUBLESHOOTING

Control ECU Master control system Sub control system
Driver side J/B control ECU
  • Automatic light control system
  • Light auto turn off system
  • Illumination system (Switch illuminations, Combination meter illumination)
  • Driver side buckle illumination
  • Illuminated entry system
  • Rheostat light control system
  • Daytime running light system
  • Back-up light system
  • License plate light
  • Stop light system
  • Taillight system
  • Turn signal and hazard warning system
  • Front fog light system
  • Front clearance light
  • Headlight system
  • Side marker light
  • Electric tension reducer system
  • Luggage compartment door opener system
  • Theft deterrent system
  • Combination meter (Pad wear indicator light)
  • Seat belt warning system
  • Remote control mirror system
  • Retract mirror system
  • Power shoulder belt anchorage system
  • Fuel lid opener system
  • Headlight cleaner system
  • Wiper system
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • 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.