Vision V6-3.5L VIN F (1997)
Antenna: Description and Operation
SYSTEM OPERATION
Power Antenna
The power operated radio antenna is a telescoping type antenna, extended and retracted by a reversible electric motor.
The Automatic Power Antenna is controlled by a combination of an internal relay and limit switches which, are built into the antenna motor
housing. This antenna is actuated when the radio is switched ON and the ignition switch in ON or ACCESSORY position. When the ignition
switch or the radio is turned OFF the antenna mast should retract fully.
Many antenna problems may be avoided by frequent cleaning of the antenna mast telescoping sections. Clean the antenna mast sections with a
clean soft cloth.
Before an antenna is removed, the antenna performance should be tested to decide if it is a reception problem or an operational problem.
Whenever a operational malfunction occurs, first verify that the radio antenna wire harness is properly connected. Check all connectors before
starting normal diagnosis and repair procedures.
Rear Window Antenna
The integrated rear window antenna incorporates the rear window defogger and a electronic module to receive radio signals. The module is located
right C-pillar behind the trim panel.
The FM signal is received via the heated portion of the rear window defogger grid. The AM signal is received via two isolated unheated lines
along the top of the rear window.
NOTE: If an accessory cellular phone glass mount antenna is installed, it should only be along the center of the window, not touching any
conductive lines in the area indicated.
CIRCUIT OPERATION
Power Antenna
The power antenna is used on the premium systems only. Battery feed for the antenna is provided on circuit F35.
This circuit is protected by a 20 amp circuit breaker located in cavity 23 of the junction block. The F35 circuit is spliced and provides power for
the power door locks, power seats, power deck lid pull down, and power sunroof.
The circuit breaker is powered by circuit A3 from the Power Distribution Center (PDC). This circuit is protected by a 30 amp fuse located in
cavity H of the PDC.
Ground for the antenna is provided on circuit Z1 which terminates at the left rear wheel well.
Circuit X60 is also connected from the radio and spliced to the amplifier and the power antenna.
Rear Window Defogger Antenna
The rear window defogger antenna is part of the rear window defogger grid.
Power for the antenna is supplied on circuit X60. This circuit is HOT when the radio is turned ON and is spliced in with the power amplifier.
Ground is supplied on circuit Z1.
