HOW TO USE THIS MANUAL
This manual provides information on the electrical circuits installed on vehicles by dividing them into a circuit for each system.
The actual wiring of each system circuit is shown from the point where the power source is received from the battery as far as each ground point. (All circuit diagrams are shown with the switches in the OFF position.)
When troubleshooting any problem, first understand the operation of the circuit where the problem was detected (see System Circuit section), the power source supplying power to that circuit (see Power Source section), and the ground points (see Ground Point section). See the System Outline to understand the circuit operation.
When the circuit operation is understood, begin troubleshooting of the problem circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing sections to find each part, junction block and wiring harness connectors, wiring harness and wiring harness connectors, splice points, and ground points of each system circuit. Internal wiring for each junction block is also provided for better understanding of connection within a junction block.
2004 COROLLA ELECTRICAL WIRING DIAGRAM SYSTEM CIRCUITS INDEX:
Automatic Glare-Resistant EC Mirror with Compass
Door Lock Control
Electronically Controlled Transmission
Key Reminder Buzzer
Light Reminder Buzzer
Radio and Player
Rear Window Defogger
Remote Control Mirror
Seat Belt Warning
Turn Signal and Hazard Warning Light
Wiper and Washer
Wireless Door Lock Control
Size: 4.36 Mb
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