COMPONENT TESTS
Note. Whenever a operational malfunction occurs, first verify that radio antenna wire harness is properly connected. Check all connectors before starting with antenna testing procedures.
ANTENNA SYSTEM
- Check antenna coaxial cable connections at rear of radio, connection from body harness to I/P harness, and antenna body. Repair as necessary.
- If coaxial connections are good, use a test antenna to test reception. Exchange radio if test antenna does not work.
- If reception is good, replace or repair antenna or lead.
- To extend antenna, using jumper wires, attach one end to a battery positive source and other end to Red and Green wire terminals for up direction. Connect second lead to a good ground or antenna mounting bracket. (Scheme 3)
- To retract antenna, attach battery positive source to Red wire terminal for down direction. Connect second lead to good ground or antenna mounting bracket.
- If motor will not operate, replace antenna assembly. See «POWER ANTENNA»(ref-141957-S07433224722002071200000) under REMOVAL & INSTALLATION.
- If motor runs freely and antenna does not extend or retract, mast or drive assembly is at fault. Remove mast and verify all teeth are intact. If not, replace mast. See «POWER ANTENNA MAST»(ref-141957-S14927927292002071200000) under REMOVAL & INSTALLATION.
- If mast jumps or travel rate is slow during motor operation or motor labors, check: Bent Mast If bent, replace mast. See «POWER ANTENNA MAST»(ref-141957-S14927927292002071200000) under REMOVAL & INSTALLATION. Dirty Mast Clean as necessary. If corroded, replace mast. If cleaning antenna sections does not solve problem, then replace antenna. See «POWER ANTENNA»(ref-141957-S07433224722002071200000) under REMOVAL & INSTALLATION.
- If mast fails to extend or retract completely, or motor continues to operate after full extension or retraction of mast, check for broken teeth on mast drive rod or bent mast.
- If mast check is good, antenna needs to be replaced. See «POWER ANTENNA»(ref-141957-S07433224722002071200000) under REMOVAL & INSTALLATION.
- If fault is in antenna assembly, it may be traced to one or more of the following conditions: Broken lead-in wire or shielding. Grounded lead-in wire or mast. Moisture in support tube or lead-in assembly. Poor connection at antenna lead-in assembly or shielding ground.
