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HORN SWITCH (1) Using ohmmeter, connect one lead to ground wire and the other lead to the positive wire (Fig. 3). (2) Depress horn switch, should have continuity repeat for other switch. If no continuity replace HORN RELAY (1) Remove horn relay. ground and terminal 12 of junction block. (a) When the horn switch is not depressed, no continuity. (b) Continuity to ground when horn switch is depressed. (c) If continuity is not correct repair horn switch or wiring as necessary. Refer to Group 8W, Wiring (a) Terminal 11 and 13 test for battery voltage from fuse F30. (b) If voltage is incorrect repair as necessary. Refer to Group 8W, Wiring Diagrams. 15 of the junction block. (a) If horns sound replace relay. and refer to Horn Diagnosis and Testing. SYSTEM TEST CAUTION: Continuous sounding of horns may cause horn relay to fail. Check fuse 18 in the Junction Block and fuse L in the Power Distribution Center. Refer to Horn System Fig. 3 Horn Switch 8G - 2 HORNS 300M DIAGNOSIS AND TESTING (Continued) |