CENTER ROOF ANTENNA INSPECTION

id092000801700

Type A

1.  Verify that there is no continuity between the center roof antenna terminals A and C using an ohmmeter.

am3zzw00004865

2.  Inspect for continuity between the center roof antenna terminals using an ohmmeter.

•  If not as indicated in the table, replace the center roof antenna.

am3zzw00004866

Type B

Note

•  The center roof antenna has a built-in antenna amplifier.

Antenna amplifier inspection

1.  Turn the audio unit on and select the radio, then measure the voltage at center roof antenna connector terminal A.

am3zzw00004875

•  If the voltage is B+, go to the feeder line inspection.

•  If the voltage is not B+, inspect the audio unit or antenna feeder.

Feeder line inspection

1.  Verify that there is no continuity between the center roof antenna terminals A and E using an ohmmeter.

am3zzw00004876

2.  Inspect for continuity between the center roof antenna terminals using an ohmmeter.

am3zzw00004877

•  If not as indicated in the table, replace the center roof antenna.