Grand Cherokee 2WD Limited V8-4.7L (2002)
Chime Warning System Diagnosis (Part 2 Of 2)
Refer to the appropriate wiring information. Conventional diagnostic methods may not prove conclusive in the diagnosis of the instrument cluster or the
Programmable Communications Interface (PCI) data bus network. The most reliable, efficient and accurate means to diagnose the BCM and the PCI
data bus network inputs for the chime warning system requires the use of a DRB III scan tool and the appropriate diagnostic information.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE
THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO
DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
