TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
17. ENGINE COMPRESSION BRAKE DOES NOT WORK.
WARNING
Although KEY SWITCH must be on and battery ground cable connected to test electrical circuit
voltage, turn off KEY SWITCH and disconnect battery ground cable before doing resistance tests
or replacing parts. This will keep you from getting shocked and prevent damage to parts and
equipment.
Step 1.
Set multimeter to 20 vdc scale. Connect red test lead to circuit breaker feed stud (1) and black test lead to
ground. Rotate KEY SWITCH (2) clockwise to on position and check for 11 to 13 vdc on multimeter. Rotate
KEY SWITCH (2) counterclockwise to off position. Disconnect test leads.
a.
If multimeter does not read 11 to 13 vdc, go to step 3.
b.
If multimeter reads 11 to 13 vdc, go to step 2.
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