Grand Cherokee 4WD V6-3.7L (2009)
Headlamp Igniter Module: Description and Operation
High Intensity Discharge Ballast - Description
DESCRIPTION
Vehicles equipped with the optional High Intensity Discharge (HID) headlamps have an electronic ballast module (1) mounted to the underside of each
front lamp unit. The electronic circuitry of the module is contained within a die cast aluminum module housing, which is secured by two screws through
two integral mounting lugs (3) to the molded plastic front lamp unit housing.
The sealed, self-docking connector receptacle (2) of the module is integral to the side of the housing that mates to the front lamp unit. The connector
receptacle contains terminal pins that connect the module to the vehicle electrical system, to the high tension HID cable and to the front lamp unit
through dedicated take outs and connectors of the front lamp unit wire harness.
The electronic ballast module cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced.