TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 848 of 1313
NO LIGHTS OPERATE WITH DIRECTIONAL SIGNAL CONTROL LEVER IN ANY POSITION - Continued
STEP
5.
IS THERE CONTINUITY BETWEEN TERMINAL A OF THE FLASHER UNIT AND TERMINAL H OF THE
CONTROL UNIT CABLE?
a.
Set up multimeter to measure resistance.
T1032DAA
VOM
2
2
3
A
B
C
H
F
1
1
CONTROL
UNIT CABLE
FLASHER
UNIT CABLE
Figure 5.
Flasher Wire Harness Test.
b.
Connect multimeter red lead to terminal H of the control unit cable. Refer to point to point schematics.
c.
Connect multimeter black lead to terminal A of the flasher units.
d.
Meter reading should be less than 20 ohms.
CONDITION/INDICATION
IS THERE CONTINUITY BETWEEN TERMINAL A OF THE FLASHER UNIT AND TERMINAL H OF THE
CONTROL UNIT CABLE?
DECISION
NO - Repair faulty wire (Volume 3, WP
0352). Go to Step (9) to verify problem is solved.
YES - Go to Step (6).
TM 9-2320-272-23-1
0098
0098-5
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