TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 1188 of 1275

TM9-2350-311-20-1

GO I VTM CONNECTIONS AND CHECKOUT—

Does VTM display PASS?

Refer to confidence test fault

isolation in TM 9-4910-571-12&P.

VTM can fail confidence test if bad

transducer is connected to it. If VTM fails

confidence test when powered by W5,

disconnect all cables from J2, J3, and J4 and

try again. If it passes, one of transducers is

bad. If it fails, VTM has failed internally.

Figure 2, Sheet 5 of 20

I-11

Go to Figure 2,

sheet 6.