Middle Door Window Motor
Table of contents
B320C CADILLAC Possible Causes
- Faulty Middle Door Window Motor
- Middle Door Window Motor harness is open or shorted
- Middle Door Window Motor circuit poor electrical connection
- Faulty Middle Door Module
How do I fix code B320C CADILLAC?
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.
Tech Notes
- B320C 39 Middle Door Window Motor Internal Electronic Failure/Discard
- B320C 42 Middle Door Window Motor Calibration Data Set Not Programmed
- B320C 4B Middle Door Window Motor Calibration Not Learned
Cost of diagnosing the B320C CADILLAC code
The cost of diagnosing the B320C CADILLAC 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
- Engine Light ON (or Service Engine Soon Warning Light)
B320C CADILLAC Description
The front door, rear door and middle door power window motors communicate with the Drivers Door Module (DDM), Passenger Door Module (PDM) and Rear Door Modules and Middle Door Modules over the LIN BUS. The motors contain a logic module which must be normalized or programmed any time the window motor is serviced to provide proper operation and communication between door modules and window motors. The Diagnostic Trouble Code (DTC) sets when an internal malfunction has been detected by the DDM or PDM in the Front Door, Rear Door, or Middle Door window motor while commanding the window motor UP/DOWN.