TM 9--2350--292--20--1
0140 00--1
PERSONNEL HEATER FAILS TO OPERATE PROPERLY.
0140 00
THIS WORK PACKAGE COVERS:
Personnel Heater Fails To Operate Properly
INITIAL SETUP:
Tools and Special Tools
General mechanic’s tool kit (item 1, WP 0717 00)
Multimeter (item 84, WP 0717 00)
Equipment Conditions
Vehicle MASTER switch OFF (TM 9--2350--292--10)
Batteries fully charged
Personnel Required
Two
Does lamp light?
Press heater indicator test lamp on heater control
box.
no
yes
no
yes
A
B
CONTINUED ON NEXT PAGE
1. Disconnect harness 4W127 lead 400 from
heater control box.
2. Place multimeter red lead in harness 4W127
lead 400 and black lead to ground. Check for
voltage.
Is 24 V dc present?
WARNING
Remove rings, bracelets, wristwatches,
and neck chains before working on any
vehicle. Jewelry can catch on equip-
ment and cause injury, or may short
across an electrical circuit and cause
severe burns or electrical shock.
Go to Step H.
Go to Step F.
no
yes
C
1. Open left side air intake grilles above battery
compartment (TM 9--2350--292--10).
2. Disconnect harness 3W218 lead 400 from
battery side of 30 amp circuit breaker.
3. Place multimeter red lead in harness 3W218
lead 400 circuit breaker connect socket and
black lead to ground. Check for voltage.
Is 24 V dc present?
Repair (WP 0290 00) or replace
harness (WP 0310 00) 3W218
lead 400. Verify fault is corrected.
