TM 5-2410-241-23-1
0022
Table 1. Cab Troubleshooting Procedures - Continued.
0022
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Horn Does Not Operate
1. Turn battery disconnect switch
and ignition switch to ON position
(TM 5-2410-241-10).
2. Inspect operation of horn (TM 5-
1. If horn does NOT operate prop-
2410-241-10).
erly, proceed to step 3.
2. If horn operation if OK, problem
does NOT exist at this time.
Resume normal operation.
3. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
4. Open front grille door (WP 0156).
5. Disconnect front lighting harness
top horn connector G-C4 (WP
0018, Figure 156) from top horn
(WP 0182).
6. Disconnect front lighting harness
bottom horn connector G-C5 (WP
0018, Figure 157) from bottom
horn (WP 0182).
7. Turn battery disconnect switch
and ignition switch to ON position
(TM 5-2410-241-10).
8. With assistance, activate and
HOLD horn switch (TM 5-2410-
241-10).
9. Using digital multimeter (WP
1. If 24 Volts is found, replace horns
0296), measure for voltage
(WP 0182). Ensure all harness
between pins 1 and 2 on front
connectors are reconnected. Ver-
lighting harness top horn connec-
ify correct operation of machine
tor G-C4 (WP 0018, Figure 156).
(TM 5-2410-241-10).
2. If voltage is NOT found, proceed
to step 10.
10. Using digital multimeter (WP
1. If 24 Volts is found, replace horns
0296), measure for voltage
(WP 0182) and front lighting har-
between pins 1 and 2 on front
ness (WP 0167). Ensure all har-
lighting harness bottom horn con-
ness connectors are reconnected.
nector G-C5 (WP 0018, Figure
Verify correct operation of
157).
machine (TM 5-2410-241-10).
2. If voltage is NOT found, proceed
to step 11.
11. Release horn switch (TM 5-2410-
241-10).
