Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Blower Motor Relay: Description and Operation
Blower Motor Relay
The blower motor relay is a International Standards Organization (ISO)-type relay. The relay is a electromechanical device that switches battery
current to the blower motor.
When the blower motor switch is in any position except high, the blower motor relay is de-energized and provides battery feed to the blower motor
from a fuse in the fuseblock module through the blower motor resistor. When the blower motor switch is in the high speed position, the blower
motor relay is energized and provides battery feed to the blower motor from a fuse in the Power Distribution Center (PDC), bypassing the
remainder of the blower motor feed circuit.
The blower motor relay coil is controlled by a voltage signal from the blower motor switch. See the Diagnosis and Testing for more information on
the operation of the blower motor relay.
The blower motor relay is installed in a connector located near the passenger side outboard end of the heater-A/C housing in the passenger
compartment, next to the heater-A/C wire harness connector.
The blower motor relay cannot be repaired and, if faulty or damaged, it must be replaced.
