TM 5-3805-298-23-2
0141
Table 1. Horn Does Not Operate - Continued.
0141
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Resistance 5.0 Ohms or Less Install
Horn Does Not Operate -
8. Using digital multimeter
horn fuse (TM 5-3805-298-10).
Continued
(WP 0174), measure resistance
Proceed to Test Step 24.
between terminals of horn fuse.
Resistance Greater Than 5.0 Ohms
Proceed to Test Step 15.
Test Step 15. Test for Shorted Wiring
Harness.
1. Remove dome light
(TM 5-3805-298-10).
2. Disconnect connector G-Dome
(WP 0012, Figure 138) from dome
light.
3. Using digital multimeter
Continuity Proceed to Test Step 16.
(WP 0174), test for continuity
No Continuity Replace horn
between connector G-Dome
(WP 0280).
(WP 0012, Figure 138) terminal 1
Proceed to Test Step 24.
and terminal 2.
Test Step 16. Test for Shorted Upper
Cab Wiring Harness.
1. Disconnect connector G-C3
(WP 0012, Figure 139) from
connector C-C24
(WP 0012, Figure 140).
2. Using digital multimeter
Continuity Proceed to Test Step 17.
(WP 0174), test for continuity
No Continuity Replace upper cab
between connector C-C24
wiring harness (WP 0292).
(WP 0012, Figure 140) terminal 11
Proceed to Test Step 24.
and ground.
Test Step 17. Test for Shorted Lower
Cab Wiring Harness.
1. Remove right lower cab access
panels (WP 0347).
2. Disconnect connector C-C10
(WP 0012, Figure 86) from
connector LE-C1
(WP 0012, Figure 87).
3. Using digital multimeter
Continuity Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C10
Proceed to Test Step 24.
(WP 0012, Figure 86) terminal 7
No Continuity Replace front frame
and ground.
wiring harness (WP 0301).
Proceed to Test Step 24.
0141-8