Grand Cherokee 4WD V8-5.2L VIN Y (1998)
Brake Warning Indicator: Testing and Inspection
The diagnosis found here addresses an inoperative brake warning lamp condition. If the brake warning lamp stays on with the ignition switch in the On
position and the parking brake released, or comes on while driving, refer to Brakes and Traction Control/Brakes for diagnosis. If no service brake or
parking brake problem is found, proceed as follows.
WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO AIRBAG SYSTEMS BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
If the brake warning lamp fails to light during the bulb test (for about four seconds after the ignition switch is turned to the On position), replace the
bulb with a known good unit. If the brake warning lamp still fails to operate, diagnosis of the park brake switch and circuit, the brake warning switch and
circuit, the Body Control Module (BCM), the instrument cluster circuitry, and/or the CCD data bus should be performed with a DRB scan tool. For
further diagnosis of the brake warning lamp and the instrument cluster circuitry, see Instrument Panel, Gauges and Warning Indicators/Instrument
Panel/Instrument Cluster.
