TM-9-2330-342-23-P
PALLETIZED LOAD SYSTEM TRAILER (PLST) M1076 A1
TECHNICAL MANUAL; FIELD MANUAL
OCTOBER 2012
TM-9-2330-342-23-P - Page 233 of 1348
LED
COMPOSITE
LIGHT
LED COMPOSITE
LIGHT WIRES
WIRE
HARNESS
WIRES
WIRE 1678C
WIRE 23
Figure 2.
Rear LED Composite Light and Wire 1678C/23.
6.
Connect button probe cable red lead to wire 1678C.
7.
Connect button probe cable black lead to a known good ground.
8.
Have assistant turn engine start switch to ON. Refer to vehicle Operator's manual (WP
0190).
9.
Have assistant turn ON Blackout Lights selector switch. Refer to vehicle Operator's manual (WP
0190).
10.
Have assistant fully depress brake pedal. Refer to vehicle Operator's manual (WP
0190).
11.
Perform ICE Test 89.
12.
Meter should display a reading between 22 and 28 vdc.
CONDITION/INDICATION
Are 22 to 28 vdc measured on wire 1678C/23 at LED composite light?
DECISION
VOLTAGE OK - Replace LED composite light (WP
0056). Go to (Step 7 - Do blackout stoplights operate?) to verify
problem is solved.
VOLTAGE FAULTY - Go to (Step 3 - Can composite light harness wire 1678C be repaired?).
STEP 3
Can composite light harness wire 1678C be repaired?
WARNING
Remove all jewelry such as rings, ID tags, bracelets, etc. prior to working on or around vehicle.
Jewelry and tools can catch on equipment, contact positive electrical circuits, and cause a
direct short, severe burns, or electrical shock. Failure to comply may result in injury or death
to personnel.
NOTE
Wire is not repairable if damage cannot be visually located or if a prior repair has already
reduced length of wire. Wire is not repairable if after repair, wire is too short to reach its
connection point.
1.
Have assistant release brake pedal. Refer to vehicle Operator's manual (WP
0190).
2.
Have assistant turn OFF Blackout Lights selector switch. Refer to vehicle Operator's manual (WP
0190).
3.
Have assistant turn engine start switch to OFF. Refer to vehicle Operator's manual (WP
0190).
TM 9-2330-342-23&P
0019
0019-3
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