Door Courtesy Switch Circuit
Table of contents
C1783 TOYOTA Possible Causes
- Faulty Door Courtesy Switch
- Door Courtesy Switch harness is open or shorted
- Door Courtesy Switch circuit poor electrical connection
- Faulty Suspension Control ECU
How do I fix code C1783 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C1783 TOYOTA code
The cost of diagnosing the C1783 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1783 TOYOTA Description
The door courtesy switch comes on when the door is opened and goes off when the door is closed. Therefore, battery positive voltage is applied to a terminal of the Suspension Control ECU when all the doors are closed and 0 V is applied when even one door is opened.