Grand Cherokee 2WD L6-4.0L VIN S (1997)
Body Control Module: All Technical Service Bulletins
Body Control Module - Check Sum Error Fault
NO: 08-31-96
GROUP: Electrical
DATE: Sept. 27, 1996
SUBJECT:
Body Control Module - Check Sum Error Fault
MODELS:
1997 (ZJ) Grand Cherokee
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO AUG. 5, 1996 (MDH 08-05-XX).
DISCUSSION:
A check sum error code may be displayed by the DRB III or MDS when requesting Body Control Module Diagnostic Trouble Codes (DTC's). This a
normal condition on vehicles built prior to 8/5/96. The fault is a result from a programming change, made to eliminate a conflict between the
auto-headlamp, auto parade/funeral (full bright) mode and the headlamp "ON" with wiper feature. The auto parade/funeral mode activates the instrument
panel lights to full bright for day light operation with the headlights on. The error will only be displayed when DTC's are requested with the DRB Ill or
MDS and is not visible to owners. The "check sum error" DTC should be ignored on these vehicles if encountered. Also, the instrument panel display
auto parade/funeral mode will not be activated with the auto headlamp "ON" with wiper feature.
POLICY: Information Only
