9-5 Aero (9600) L4-2.3L Turbo (B235) HO (2000)
Unplug the connector:
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Radio antenna amplifier, signal output (624).
Measure the resistance. The value should be infinite.
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2
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Radio antenna amplifier, signal output
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B-
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness.
Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the reading correct?
NO
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See: Poor Radio Reception/Diagnostic Procedures/4-Door/AM and FM Reception/Antenna System 2/Diagnostic Procedure - III
YES -
Continue with Check The Antenna Cable.