Jeep Workshop Manuals
Grand Cherokee 2WD V6-3.7L (2008)
Relays and Modules > Relays and Modules - Windows and Glass > Heated Glass Element Relay > Component Information > Description and Operation > Description > Page 721
Heated Glass Element Relay: Description and Operation
The rear window defogger (EBL) relay is an electromechanical switch that uses a low current input controlled by the A/C-heater control to control the
When the relay coil is de-energized, spring pressure returns the movable relay contact back against the fixed, normally closed contact point. The resistor
The EBL relay terminals are connected to the vehicle electrical system through a receptacle in the junction block (JB) inside the vehicle. The inputs and
Terminal (30) receives battery current through a fuse located in the power distribution center (PDC) at all times.
Terminal (85) receives a ground through the EBL relay control circuit only when the A/C-heater control electronically pulls the circuit to ground.
Terminal (86) receives battery current through the run relay and a fuse located in the JB only when the run relay coil is energized.
Terminal (87) provides battery current to the rear window defogger grid through the EBL relay output circuit and to the heated outside mirrors
Terminal (87A) is not connected to any circuit in this application, but provides a battery current output only when the EBL relay coil is
The EBL relay cannot be repaired and must be replaced if found inoperative or damaged. Refer to the appropriate wiring information for diagnosis and
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