Jeep Workshop Manuals
Grand Cherokee 2WD V6-3.7L (2008)
Relays and Modules > Relays and Modules - Lighting and Horns > Parking Lamp Relay > Component Information > Description and Operation > Description > Page 313
Parking Lamp Relay: Description and Operation
The park lamp relay is an electromechanical switch that uses a low current input from the Front Control Module (FCM) (located on the Integrated Power
The movable common supply contact point is held against the fixed normally closed contact point by spring pressure. When the relay coil is energized,
The inputs and outputs of the park lamp relay include:
Common Supply Terminal (30) - The common feed terminal is connected to the park lamps through a park lamp relay output circuit and
Coil Ground Terminal (85) - The coil ground terminal is connected to a control output of the FCM through a park lamp relay control circuit.
Coil Battery Terminal (86) - The coil battery terminal is connected to a fused B(+) circuit at all times.
Normally Open Terminal (87) - The normally open terminal is connected to a fused B(+) circuit at all times.
Normally Closed Terminal (87A) - The normally closed terminal is not connected to any input circuit in this application, but will be connected
The park lamp relay as well as the hard wired inputs and outputs of the relay may be diagnosed using conventional diagnostic tools and procedures.
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