Grand Cherokee 2WD L6-4.0L VIN S (1997)
Diagnostic Connector: Description and Operation
CIRCUIT OPERATION
Circuits D98 and D99 connect the Speed Proportional Steering Control Module (SPSCM) to the data link connector. Circuit D99 connects to
circuit D83 which continues to the data fink connector. The SPSCM transmits data to the scan tool through the data link connector on circuit D99.
The SPSCM receives data from the scan tool on circuit D98.