TM 9-2320-387-24-l
INSTRUMENTS CIRCUIT
REFERENCE INFORMATION
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WARNING
Disconnect
negative
battery
cable before disconnecting
and
reconnecting
PCB harness.
WARNING
There is battery voltage at the PCB at all
times. Failure to disconnect battery cable
will result in damage to equipment
or
injury to personnel.
6
CONTROLLER 3
27F
27D
RESISTANCE AND CONTINUITY
04,500 OHMS
STEIlCE-R TEST 91
1. Connect RED clip and BLACK clip to the
terminations indicated in the question.
RED to
the first, BLACK to the second.
2. Start Test 91,0-4.500
Ohms.
3. Displayed reading is in ohms. Less than 5 ohms
is continuity.
If the resistance is over 4.500
ohms, STEIICE-R displays .9.9.9.9.
CONTINUITY (RESISTANCE)
MULTMETER
1. Set the voltmeter to an ohms scale of about
1,000 ohms.
2. Connect the RED and BLACK leads to the
connections stated in the question.
3. Be sure to read the correct scale. Less than 5
ohms indicates continuity.
For an open circuit,
the meter should peg full scale (needle all the
way to the left).
WAIT-TO-START
LAMP
I
GLOW PLUG
CONTROLLER
/%
)
\
1
Repair/replace
harness (para. 4-90).
controller will cause
the circuit to be
I open.
CONTROLLER HARNESS
GLOW PLUG
CONTROLLER
HARNESS
Replace glow plug
controller (para. 4-33).
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PCB ENGINE
CONNECTOR
2-321
