86 Corvette Service Manual
Contents
1. HOT IN ACCY OR AT ALL Times RDO CTSY CLK FUSE BLOCK FUSE 20 AMP Se ee ee THEFT 35 YEL DETERRENT lt SEE FUSE SYEL 43 5240 a BLOCK DETAILS FE Cl 2PNKWHT 40 1 1 1 j 4 C209 40 CONVERTIBLE 4 2 ORN 40 COUPE spam aaa se 4 i SORN COUPE 1 10RN 40 143 SEE FUSE CONVERTIBLE S41 ts OR Ken ae 0209 21 i me BLOCK DETAILS ONLY 40 143 ANTENNA RELAY WHT DK GAN GRY sana a SEE GROUND 40 Qe sem SEE GROUND SPEAKERS PRS EED wey seas gt POWER ANTENNA ANTENNA MAST ANTENNA DOWN 1 MOTOR SWITCH uP ih COAX LEAD roms B 0N 1 i 1 6400 0 9 POWER ANTENNA SYSTEM CHECK 1 With engine running turn Radio On e Antenna Mast rises to full height approximately three feet 2 With Radio playing wiggle Antenna No ignition or vehicle noise picked up by Antenna No noise when Antenna is moved mounting is secure 3 Turn Radio Off e Antenna Mast goes down into fender TROUBLESHOOTING HINTS 1 Check the RDO Fuse and CTSY CLK Fuse Power Antenna goes up or down part way Check Power Antenna mast for bent condition and dirt2. If mast is dirty and or bent straighten the mast and clean off dirt Lube with light oil and check operation Ifmastis straight and clean replace Antenna Motor 3 Power Antenna goes up and down properly but the Radio does not receive Plug a replacement Antenna into the Coax Connector in the rear quarter Ifthe Radio works with a substitute Antenna repair or replace the Power Antenna If the Radio does not work with a substitute Antenna check repair Antenna Coax Lead to Radio COMPONENT LOCATION Page Figure Antenna Relay Rear of car on LH side of roof storage support 201 13 D Fuse Block In RH end of I P 201 10 A C209 15 cavities Behind RH side of I P below fuse block 201 15 A coed uaeeseaeenesanes Behind RH kick panel 201 7 B G400 a re eee On frame above LH rear wheel 201 13 D CaO geccneavaes EEE Base of RH 201 15 A 5240 eee Terre eee eee I P harness left of multi use center 201 10 A aU lov cee Gs che EE eee eens Rear lights harness near base of pillar 201 15 A a ee Rear lights harness near rear of RH door 201 15 A e258 eee Rear of rear compartment right of fuel filler 201 13 A SYSTEM DIAGNOSIS 1 Disconnect the connector C1 with
3. ORN wire from the Antenna Relay With the Ignition Switch in RUN measure the volt ages to ground at the connector VOLTAGES ANTENNA RELAY CONNECTOR C1 Ignition Switch in RUN Terminal Voltage Radio Wire Color To Ground ai ORN Battery On or Off If a voltage is not correct check the wiring or switch supplying that point e If the voltages are correct go to the next step 2 Reconnect the connector Cl to the Antenna Relay and disconnect the connec tor C2 from the Antenna Relay With the Ignition Switch in RUN measure voltages to ground at the pins of the Antenna Relay VOLTAGES ANTENNA RELAY Ignition Switch in RUN Ifavoltages not correct replace the Antenna Relay e If voltages at the Antenna Relay are good repair or replace the Power Antenna unit ALLAAYOO LSL v8 POWER ANTENNA ME CIRCUIT OPERATION When the Radio is turned on voltage is available through the RDO Fuse and the Radio to the Antenna Relay coil The coil is grounded to G401 The Antenna Relay contacts close and Battery voltage is supplied to Antenna Motor through the CTSY CLK Fuse the relay contacts and the DK GRN wire The other motor terminal is grounded through the Up Switch the GRY wire and the relay contacts to G401 The motor drives the Antenna up At the end of its travel the Up Switch opens and the motor stops When the Radio is turned on voltage
4. is available through the RDO Fuse and the Radio to the Antenna Relay coil The coil is grounded to G401 The Antenna Relay contacts close and Battery voltage is supplied to Antenna Motor through the CTSY CLK Fuse the relay contacts and the DK GRN wire The other motor terminal is grounded through the Up Switch the GRY wire and the relay contacts to G401 The motor drives the Antenna up At the end of its travel the Up Switch opens and the motor stops ve ALLAAYOO
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