B18BA Code: Meaning, Causes, and Symptoms | OBD2 Codes

B18BA – Window Control Driver/Passenger Door Module

 

B18BA Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B18BA 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

 

B18BA Description

 

B18BA-4B The Door Module logic has determined the temperature of the window motor has exceeded 80?? (176??) 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.