ENGINE STOP SWITCH DOESN'T STOP ENGINE

TM 9-2320-285-24-1

2-19.

INSTRUMENT PANEL TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

10. ENGINE STOP SWITCH DOESN'T STOP ENGINE

Step 1.

Have assistant depress engine stop button.

Use voltmeter to check for 12 Vdc at both terminals of engine stop switch.

a. If voltmeter indicates 12 Vdc at both terminals, go to step 2 below.

b. If voltmeter indicates 12 Vdc at only one terminal, replace engine stop switch (para 2-26a(3)).

c. If voltmeter indicates zero at both terminals, repair or replace wiring between ignition switch and

engine stop switch (para 2-35c(1)).

Step 2.

Have assistant depress engine stop button.

Use a voltmeter to check for 12 Vdc at engine stop solenoid.

a. If voltmeter indicates zero, repair or replace wiring between engine stop solenoid and engine

b. If voltmeter indicates 12 Vdc, go to step 3 below.

Step 3.

Disconnect electrical lead from engine stop solenoid.

Use an ohmmeter to check for continuity of engine stop solenoid.

If continuity is obtained, notify direct support maintenance (refer to TM 9-2815-205-34 for

troubleshooting of the engine and its components).

b. If continuity is not obtained, replace engine stop solenoid.

2-20.

LIGHT SYSTEMS TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. TRAILER LIGHTS INOPERATIVE (12-VOLT TRAILER)

Step 1.

Check if all trailer lights are inoperative.

a. If all trailer lights are inoperative, go to step 3 below.

b. If one or more trailer lights are operative, go to step 2 below.

2-180