TM 9-2320-273-20
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Table 5-3. Ether Quick Start Control Circuit Troubleshooting.
INSTRUCTION
INDICATION
YES
NO
REMARKS
SOLENOID CANNOT
Check engine coolant
temperature gage.
Check for voltage at
circuit 51 terminal of
ETHER switch.
Check for voltage at
circuit 51A terminal
of ETHER switch.
Check for voltage at
circuit 51B terminal
of solenoid.
Check for voltage at
circuit 51C terminal
of solenoid.
Check for voltage at
terminal of ETHER
temperature switch.
BE HEARD TO CLICK WHEN ETHER BUTTON IS PUSHED.
Below 50°F (10°C).
Go to Step
2.
NOTE
The ETHER button must be pushed and
released when performing the following checks.
12 voltage nominal.
12 volts dc nominal.
12 volts dc nominal.
12 volts dc nominal.
12 volts dc nominal.
Go to Step
3.
Go to Step
4.
Go to Step
5.
Go to Step
6.
Replace
witch (para
5-74).
Check cir-
cuit breaker
(para 5-5)
and wiring.
Replace
witch
(para 5-74).
Repair
wiring or
connections
Replace
solenoid.
Repair
wiring or
connections
Solenoid is not sup-
posed to work when
coolant is above 50°F
5-31
