TM 5-3805-262-20
3-32. CHARGING SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ALTERNATOR NOT CHARGING BATTERIES (Cont).
Step 6.
Connect transducer cable W4 connector P1 to VTM J2.
Connect transducer cable W4 connector P2 to current probe (TK item
11).
Clamp current probe around battery positive cable with current probe
arrow pointing away from battery. Be sure current probe is closed.
Shut off fuel by pulling fuel SHUT OFF control out.
Dial 90 into VTM TEST SELECT.
Crank engine for 10 seconds then turn ignition key switch to off po-
s i t i o n .
Press and hold TEST button until CAL appears on VTM display then re-
lease TEST button.
Wait for offset value to appear on display. Offset value should be
between -225 to +225. If it is not, STE/ICE is defective (refer to
TM 9-4910-571-12&P).
Press and release TEST button.
Put vehicle lights switch main switch and auxiliary switch in OFF
p o s i t i o n s .
Turn ignition key switch to accessory position (first counterclock-
w i s e p o s i t i o n ).
VTM display should indicate (TBD) amperes.
Turn ignition key switch to off position.
a. If VTM displays (TBD) amperes, go to step 7 below.
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