Sebring Sedan V6-2.7L VIN R (2004)
Antenna: Testing and Inspection
Antenna Body and Cable
The following four tests are used to diagnose the antenna with an ohmmeter:
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Test 1 Coax cable at back of radio to ground test
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Test 2 Tip-of-mast to tip-of-conductor test
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Test 3 Body ground to battery ground test
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Test 4 Body ground to antenna coaxial cable shield test.
WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT
TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE
THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO
DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
Antenna Tests - Typical
The ohmmeter test lead connections for each test are shown in the illustration .
NOTE: This model has a two-piece antenna coaxial cable. Tests 2 and 4 must be conducted in two steps to isolate an antenna cable problem. First, test
the primary antenna cable (integral to the body wiring) from the coaxial cable connector just in front of the front seat crossmember of the passenger seat
to the antenna body. Then, test the secondary antenna cable (instrument panel antenna cable) from the coaxial cable connector just in front of the front
seat crossmember of the passenger seat to the coaxial cable connector at the radio.
TEST1
Test 1 checks the antenna conductor components for a short circuit. This test should be performed first on the entire antenna circuit, from the antenna
mast to the center conductor of the coaxial cable connector at the radio. If a short circuit is detected, each of the three antenna conductor components
(antenna mast, antenna body and primary cable unit, instrument panel antenna secondary cable) should be isolated and tested individually to locate the
exact component that is the source of the short circuit. To begin this test, proceed as follows:
1. Disconnect the instrument panel (secondary) antenna cable coaxial connector from the back of the radio.
2. Touch one ohmmeter test lead to the shield ground of the coaxial cable. Touch the other test lead to the center conductor pin of the instrument
panel antenna cable coaxial connector for the radio. Check the ohmmeter reading for continuity.
3. There should be no continuity. The ohmmeter should register an open circuit. Low resistance indicates a damaged or shorted antenna conductor. If
OK, go to Test 2. If not OK, isolate and test each of the individual antenna conductor components. Replace only the faulty antenna conductor
component.
TEST 2
Remove antenna mast or unplug antenna cable to perform this test.
Test 2 checks the antenna conductor components for an open circuit. This test should be performed first on the entire antenna circuit, from the antenna
mast to the center conductor of the coaxial cable connector at the radio. If an open circuit is detected, each of the three antenna conductor components
(antenna mast, antenna body and primary cable unit, instrument panel antenna secondary cable) should be isolated and tested individually to locate the
exact component that is the source of the open circuit. To begin this test, proceed as follows:
1. Disconnect the instrument panel (secondary) antenna cable coaxial connector from the back of the radio.
2. Touch one ohmmeter test lead to the tip of the antenna mast. Touch the other test lead to the center conductor pin of the instrument panel antenna
