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_____________________________________________________ Electrical System 12-157 ® 05745159 ANTENNA SYSTEM TEST CHART #7 STEP ACTION VALUE(S) YES NO 1 Disconnect negative battery cable. NOTE: To avoid misdiagnosis be sure Is resistance value greater than.15 ohms? > .15 ohms Check the base of the antenna for a good connec- tion to body ground. Check the coaxial cable interconnects for a poor Check the ground connec- tion from the battery nega- tive cable to the body. Repair the antenna ground circuit as necessary. Go to step 2. 2 Grasp the antenna mast. Check the lead-in cable connection to body ground. Check the coaxial cable connection or corrosion. Check the ground connec- tion from the battery nega- tive cable to the body. Repair the antenna ground circuit as necessary. Go to step 3. 3 With a DVOM, measure the resistance NOTE: To avoid misdiagnosis be sure Does the measured resistance equal ap- Less than 3.5 ohms Go to step 4. Check the coaxial cable interconnects for a poor con- nection or corrosion. Repair/replace the antenna coaxial circuit as necessary. 4 While observing the DVOM, wiggle the Check the coaxial cable interconnects for a poor Repair/replace the antenna coaxial circuit as necessary. See troubleshooting hints for noise and poor reception. 4-1-00 |