Starter Solenoid Test Circuit; Testing Starter Components; Test Armature For Grounds; Test Armature For Open Circuits - Isuzu C-240PW-28 Technical Manual

b . Set multimeter for volts DC and as shown in FIGURE 3-48, Test A. If voltage is indicated, solenoid is defective.
c. Momentarily connect a jumper as shown in FIGURE 3-48, Test B. Multimeter should indicate battery voltage
and starter should crank the engine. If multimeter does not read battery voltage, the solenoid is defective.
If multimeter indicates battery voltage, but starter does not operate, starter is defective.

3-23.5.2. Testing Starter Components.

a. Test armature for grounds.
(1) Bet multimeter for ohms and touch armature shaft and each commutator bar with multimeter leads.
(2) If multimeter indicates a low reading (approximately zero ohms), armature is grounded and requires re-
placing.
b. Test armature for open circuits.
(1) Check for continuity between commutator segments with multimeter.
(2) If an open is indicated, armature must be replaced.
FIGURE 3-48. Starter Solenoid Test Circuit
ARMY TM 9-2815-254-24
AIR FORCE TO 38G1-94-2
3-89