Jeep 1996 Grand Cherokee Service Manual page 671

8W - 47 - 2
DESCRIPTION AND OPERATION (Continued)
Circuit X51, the feed for the left rear door speaker
and circuit X57, the return for the speaker, connect
from the radio to the power amplifier. At the jumper
harness for the left rear door speaker, circuit X93
from the amplifier connects to circuit X52 and circuit
X91 connects to circuit X58. Circuits X93 and X52
feed the speaker. The speaker return is on circuit
X58 and circuit X91.
Circuit X52, the feed for the right rear door
speaker and circuit X58, the return for the speaker,
connect from the radio to the power amplifier. At the
jumper harness for the right rear door speaker, cir-
cuit X94 from the amplifier connects to circuit X52
and circuit X92 connects to circuit X58. Circuits X94
and X52 feed the speaker. The speaker return is on
circuits X58 and X92.
RADIO REMOTE SWITCHES
Premium radios have remote volume, seek, and
preset switches on the steering wheel. The remote
switches connect to the Body Control Module (BCM)
on circuit 709 and ground on circuit Z2. Each switch
is wired in parallel. A resistor in series between each
switch and ground circuit Z2 determines the signal
sensed by the BCM on circuit 709.
After sensing a request from the radio remote
switches, the BCM signals the radio over the CCD
bus to make the requested selection.
POWER ANTENNA—EXPORT ONLY
The power antenna is only used on vehicles built
for export markets.
The power antenna relay supplies voltage to the
power antenna motor. The relay supplies voltage to
8W - 47 AUDIO SYSTEM
the antenna motor to either raise or lower the
antenna.
Circuit A7 from fuse 15 in the Power Distribution
Center (PDC) feeds the relay switch through fuse 13
in the junction block.
When the radio is OFF, the switch in the power
antenna relay is in the DOWN position. In DOWN
position, the relay switch powers circuit X14. Circuit
X14 supplies voltage to power antenna motor to
lower the antenna. The ground path is from the
motor to the relay on circuit X16, through the switch
in the relay to ground on circuit Z1.
Circuit Z1 also provides ground for the coil side of
the power antenna relay. When the radio is turned
ON, circuit X60 from the radio supplies power to the
coil side of antenna relay and the relay switches to
the UP position. In the UP position, the switch pow-
ers circuit X16. Circuit X16 supplies voltage to power
the antenna motor to raise the antenna. The ground
path is from the motor to the relay on circuit X17,
through the switch in the relay to ground on circuit
Z1.
SCHEMATICS AND DIAGRAMS
WIRING DIAGRAM INDEX
The following index covers all components found in
this section of the wiring diagrams. If the component
you are looking for is not found here, refer to section
8W-02 for a complete list of all components shown in
the wiring diagrams.
ZJ