Jeep 1997 Grand Cherokee Service Manual page 1288

8W - 41 - 4
DESCRIPTION AND OPERATION
HORN
The horn system is powered by circuit F31 from
fuse 6 in the Power Distribution Center (PDC). Cir-
cuit F31 supplies voltage to the coil and contact sides
of the horn relay in the PDC.
When the operator presses the horn switch, a
ground path is completed on the coil side of the horn
relay through the case grounded switch, on circuit
X4. The horn relay contacts then closes to connect
circuit F31 to circuit X2. Circuit X2 powers the
horns. Circuit Z1 provides ground for the horns.
On vehicles equipped with Vehicle Theft Security
System (VTSS), the X4 circuit is spliced to the Body
Control Module (BCM). For operation of the VTSS,
refer to section 8W-39.
CIGAR LIGHTER
The cigar lighter relay powers the cigar lighter.
The relay energizes when the ignition switch is in
the ACCESSORY or RUN position. In the ACCES-
8W - 41 HORN/CIGAR LIGHTER
8W-41 HORN/CIGAR LIGHTER
SORY or RUN position, the switch connects circuit
A1 from fuse 8 in the Power Distribution Center
(PDC) to circuit A31. Circuit A31 powers relay coil.
Circuit Z1 provides ground for the relay coil.
When the relay energizes, its connects circuit F61
from fuse 10 in the PDC to circuit F30. Circuit F30
powers the cigar lighter.
When the operator depresses the lighter, contacts
inside the lighter element close, and voltage from cir-
cuit F30 flows through the heating element to
ground. Circuit Z1 provides ground for the lighter.
HELPFUL INFORMATION
Circuit Z1 also grounds the power outlet.
POWER OUTLET
Circuit A7 from 15 in the Power Distribution Cen-
ter (PDC) powers circuit F38 through fuse 21 in the
junction block. Circuit F38 feeds the power outlet.
Circuits A7 and F38 are HOT at all times. Circuit Z1
provides ground for the power outlet.
ZG