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TM 9-2320-364-20-2
2-1164
13.
Repair wire 1175 (see
schematic Fig 2-24)
or notify DS
Maintenance.
Verify repair, go to
Step 14 of this Fault.
YES
NO
22 to 28 vdc register on 24 vdc
voltmeter indicating ENGINE
switch is OK.
10 to 14 vdc register on 12 vdc
voltmeter indicating batteries
are OK.
Domelight operates indicating
10 to 14 vdc present on wire
1084 at BLACKOUT LIGHTS
switch.
Wire 1189 between splice at
blackout service select switch
and 24V relay R12 OK.
Wire 1872 between ENGINE
switch and IGNITION circuit
breaker CB10 OK.
IGNITION circuit breaker CB10
OK.
Wire 1872 between IGNITION
circuit breaker CB10 and 24V
relay R12 OK.
Wire 1435 between 24V
relay R12 and ground OK.
24V relay R12 OK.
Wire 1430 OK.
Wire 1189 between 24V
relay R12 and magnetic
switch R28 OK.
Wire 1435 between magnetic
switch R28 and ground OK.
Wire 1435 between magnetic
switch R28 and rectifier M52
OK.
Magnetic switch R28 OK.
Wire 1175 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 10 to 14 vdc are not present,
wire 1175 is faulty and the bus
between circuit breakers CB1
and CB4 will not receive 10 to
14 vdc.
WARNING
Are 10 to 14 vdc measured on
wire 1175 at circuit breaker
CB4 with ENGINE switch
turned ON?
2. HEADLIGHTS, CLEARANCE LIGHTS, HORN, WORK LIGHTS, DIMMER, OR
BEACON LIGHT DO NOT OPERATE (CONT).
Read WARNING
on Page 2-1165
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