Brake Lamps

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The CHMSL is illuminated by several LED units that are soldered to the electronic circuit board within the lamp housing. The brake lamps are powered by high side drivers within the BCM based upon an input to the CAB/ABM from the brake pedal position sensor. If the brake lamps and all of the LED units within the CHMSL fail to operate, diagnose and repair the brake lamps before attempting to repair the CHMSL. If the brake lamps operate but none of the CHMSL LED units illuminate, test and repair the CHMSL ground or feed circuit if required. If some of the CHMSL LED units operate and others do not, the CHMSL assembly must be replaced with a new unit.

CONDITION	POSSIBLE CAUSES	CORRECTION
BRAKE LAMP DOES NOT ILLUMINATE	1. Ineffective or missing bulb.	1. Test and replace brake lamp bulb if required.
	2. Ineffective ground circuit.	2. Test and repair open brake lamp ground circuit if required.
	3. Ineffective fuse.	3. Test and replace the fuse if required.
	4. Ineffective feed circuit.	4. Test and repair open stop lamp output circuit if required.
	5. Ineffective brake pedal position sensor.	5. Test and replace brake pedal position sensor if required.
	6. Ineffective CAB inputs or outputs.	6. Use a diagnostic scan tool to test the CAB/ABM inputs and outputs. Refer to the appropriate diagnostic information.
	7. Ineffective BCM inputs or outputs.	7. Use a diagnostic scan tool to test the BCM inputs and outputs. Refer to the appropriate diagnostic information.
BRAKE LAMP DOES NOT EXTINGUISH	1. Ineffective feed circuit.	1. Test and repair shorted stop lamp output circuit if required.
	2. Ineffective brake pedal position sensor.	2. Test and replace brake pedal position sensor if required.
	3. Ineffective CAB inputs or outputs.	3. Use a diagnostic scan tool to test the CAB/ABM inputs and outputs. Refer to the appropriate diagnostic information.
	4. Ineffective BCM inputs or outputs.	4. Use a diagnostic scan tool to test the BCM inputs and outputs. Refer to the appropriate diagnostic information.