3-33. STARTING SYSTEM TROUBLESHOOTING (CONT)
TEST OR INSPECTION
3. STARTER CRANKS SLOWLY (UNDER 200 RPM) (Cont).
S t e p 1 . ( C o n t ).
While cranking engine with bad or discharged batteries, VTM may lose
power and come on again after cranking has stopped, displaying -----. If
this happens, turn off VTM power, and clean battery posts and clamps and
try again. If VTM still loses power, connect VTM to another vehicles
battery (refer to TM 9-4910-571-12&P). Connect test probe cable W2 to
VTM J4 and red test clip to loader battery positive post and black test
c l i p t o l o a d e r b a t t e r y n e g a t i v e p o s t . Y o u w i l l h a v e t o e n t e r V I D a nd
condition current probe again.
Crank engine for 5 seconds
s i t i o n.
Record VTM rpm display.
Dial 72 into TEST SELECT.
then turn ignition key switch to off po-
Dial 76 into
l e a se
TEST SELECT if VTM is not powered by loader batteries.
and hold TEST button until CAL appears on VTM display then re-
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
Press and release TEST button.
Wait for GO to appear on display.
When GO appears, crank engine until OFF or an error message is dis-
p l a y e d.
Turn ignition key switch to off position.
a. If VTM display is between (TBD) amps and engine rpm was 200 min-
imum, starter circuit is okay.
b. If VTM display is between (TBD) amps and engine rpm was zero,
starter is not engaging flywheel. Go to step 2 below.
c. If VTM display is not between (TBD) amps, go to step 4 below.
d. If E013 is displayed, repeat this step. If E013 message persists
after three attempts, go to step 4 below .
e. If VTM does not display a number or E013 go to step 4 below.