Grand Cherokee 2WD L6-4.0L VIN S (1997)
Blower Motor Relay: Description and Operation
CIRCUIT OPERATION
Circuit A19 from fuse 7 in the Power Distribution Center supplies battery voltage to the coil and contacts sides of the high speed blower motor
relay. The ATC module provides ground for the coil side of the relay on circuit C41.
When the ATC module grounds the high speed blower motor relay, the relay contacts close and connect circuit A19 to circuit C42. Circuit C42
connects to the blower motor and the ATC module. Circuit Z4 provides ground for the blower motor.
