Window Control Driver/Passenger Door Module
Table of contents
B18BA RAM Possible Causes
- Faulty Driver/Passenger Door Window Motor
- Driver/Passenger Door Window Motor harness is open or shorted
- Driver/Passenger Door Window Motor circuit poor electrical connection
- Faulty Driver/Passenger Door
How do I fix code B18BA RAM?
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
- B18BA-4B WINDOW CONTROL OVER TEMPERATURE DRIVER/PASSENGER DOOR MODULE (DDM/PDM)
- B18BA-11-WINDOW CONTROL CIRCUIT SHORT TO GROUND DRIVER/PASSENGER DOOR MODULE (DDM/PDM)
- B18BA-12-WINDOW CONTROL CIRCUIT SHORT TO BATTERY DRIVER/PASSENGER DOOR MODULE (DDM/PDM)
- B18BA-13-WINDOW CONTROL CIRCUIT OPEN DRIVER/PASSENGER DOOR MODULE (DDM/PDM)
Cost of diagnosing the B18BA RAM code
The cost of diagnosing the B18BA RAM 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)
B18BA RAM Description
B18BA-4B
The Door Module logic has determined the temperature of the window motor has exceeded 80°C (176°F)
B18BA-11
If both of the Window Driver circuits (Up and Down) are grounded during a window movement command, the motor will be totally inoperative. To lower the window, voltage is applied to the Window Driver (Down) circuit and the Window Driver (UP) circuit remains grounded in the module. To drive the window up, the circuits are reversed.
B18BA-12
If either one of the Window Driver circuits are shorted to battery, the motor will operative in one direction only. If the current remains on when the window is in its full travel, the circuit breaker will open. To lower the window, voltage is applied to the Window Driver (Down) circuit and the Window Driver (UP) circuit remains grounded in the module. To drive the window up, the circuits are reversed.
B18BA-13
If either one of the Window Driver circuits are open, the motor will be totally inoperative. To lower the window, voltage is applied to the Window Driver (Down) circuit and the (Q11) Window Driver (UP) circuit remains grounded in the module. To drive the window up, the circuits are reversed.