TM 5-5420-226-20-1
{
Symptom-”
DETAILED
TROUBLESHOOTING
PROCEDURE
VEHICLE
OPERATION
- POWERPLANT,
RUNNING
4
(Continued)
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Check front accessory harness connector (CKT
‘
415A) at air cleaner blower relay for electrical
power.
Second Technician
(Operator’s
Station)
l Set MASTER BATTERY switch OFF.
First Technician
(Commander’s
Station)
l Remove right-hand floor access cover if not already
removed (page 17-9).
l Disconnect front accessory harness connector (CKT
415A) from air cleaner blower relay.
l Set multimeter to measure 18 to 30 volts dc, or use
STE/ICE
Test No. 89 (page 4-81).
l Connect red probe of meter to contact A (CKT
415A) of front accessory harness connector
and
black probe to ground.
Second Technician
(Operator’s
Station)
l Start engine.
First Technician
(Commander’s
Station)
l Check if meter indicates 18 to 30 volts dc.
Second Technician
(Operator’s
Station)
l Stop engine.
l Set MASTER BATTERY switch OFF.
Did meter indicate 18 to 30 volts dc?
\
I
FOR CLARITY
QUADRANT
ASSEMBLIES
NOT SHOWN
l Check voltage regulator
connector from pin A to pin
H for continuity.
TA10698O
4-291
