Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Horns System Check performed? | -- | Go to Step 2 | Go to Horns System Check |
2 |
Does the test lamp light? | -- | Go to Step 4 | Go to Step 3 |
3 | Repair the open in CKT 150 (BLK) between connector cavity A of the horns and ground G103. Are the horns still inoperative? | -- | Go to Step 4 | Go to Horns System Check |
4 |
Did the test lamp light? | -- | Go to Step 5 | Go to Step 6 |
5 | Replace the horn assembly. Are the horns still inoperative? | -- | -- | Go to Horns System Check |
6 |
Is continuity present? | -- | Go to Step 8 | Go to Step 7 |
7 | Repair the open in CKT 29 (DK GRN) between the horn relay and the horns assembly. Are the horns still inoperative? | -- | Go to Step 8 | Go to Horns System Check |
8 | Connect an unpowered test lamp between socket cavity E9 of the horn relay and ground. Did the test lamp light? | -- | Go to Step 10 | Go to Step 9 |
9 | Repair the open in CKT 740 (ORN) between the horn fuse and the horn relay. Are the horns still inoperative? | -- | Go to Step 10 | Go to Horns System Check |
10 | Connect an unpowered test lamp between socket cavity D9 of the horn relay and ground. Did the test lamp light? | -- | Go to Step 12 | Go to Step 11 |
11 | Repair the open in CKT 740 (ORN) between splice S127 and the horn relay. Are the horns still inoperative? | -- | Go to Step 12 | Go to Horns System Check |
12 | Connect a fused jumper wire between socket cavity E9 and cavity E7 of the horn relay. Do the horns sound? | -- | Go to Step 13 | Go to Step 14 |
13 | Replace the horn relay. Are the horns still inoperative? | -- | Go to Step 14 | Go to Horns System Check |
14 |
Did the test lamp light? | -- | Go to Step 20 | Go to Step 15 |
15 |
Is continuity present? | -- | Go to Step 17 | Go to Step 16 |
16 | Repair the open in CKT 28 (BLK) between the horn relay and the horn switch. Are the horns still inoperative? | -- | -- | Go to Horns System Check |
17 | Test for continuity of grounding at the horn switch. Is there continuity to ground present? | -- | Go to Step 19 | Go to Step 18 |
18 | Repair the open. Are the horns still inoperative? | -- | -- | Go to Horns System Check |
19 | Replace the horn switch. Are the horns still inoperative? | -- | -- | Go to Horns System Check |
20 | Replace the horn relay. are the horns still inoperative? | -- | Go to Step 15 | Go to Horns System Check |
