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 TM 10-3930-638-24&P
2-25. INSTRUMENT PANEL TROUBLESHOOTING (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. WARNING LIGHTS INOPERATIVE (cont)
Step 2. (cont)
a.
If warning light is on during test, and inoperative
during high temperature or low oil pressure vehicle
operation, replace associated warning light switch
b.
If warning light is not on, check for open circuit in
wiring or 40 ohm resistor between inoperative
warning light and associated warning light switch.
WARNING LIGHTS, BACK-UP ALARM AND ELECTRIC FUEL PUMP INOPERATIVE
2.
Turn IGNITION switch key to ON position and depress START switch.
a.
If starter cranks engine, replace 6 ampere circuit breaker at IGN terminal of IGNITION switch.
b.
If starter does not crank engine, connect voltmeter leads to BATT terminal of IGNITION
switch and vehicle ground. If voltmeter indicates 24 Vdc, replace IGNITION switch (para 2-28c).
If voltmeter does not indicate 24 Vdc, check for open circuit in wiring between IGNITION switch
BATT terminal and 25 ampere circuit breaker.
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