Table 1. Indicator, Gauges, and Warning System Troubleshooting - continued

TM 9-2320-361-24-1

0014 00

INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

Table 1. Indicator, Gauges, and Warning System Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 4. Test horn switch continuity.

10. HORN DOES NOT

OPERATE (Contd)

1. Disconnect lead 25 from air

horn solenoid to protect

2. Reinstall horn button cap,

spring, and contact

3. Set multimeter to RX 1 scale.

4. Connect negative lead to a

good frame ground.

5. Touch positive lead to lead 25

1. If continuity is present, reconnect

and press down until contact

lead 25 and recheck horn operation.

touches base plate.

2. If continuity is not present, remove

horn button and clean or replace

TEST 2

PIN A

STEP 4

HORN SOLENOID

PIN B

25 25

TEST 2

LEAD 25

STEP 3

TEST 1

TEST 3

STEP 5

STEP 4

TEST 4

STEP 5

END OF WORK PACKAGE

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