TM 5-6115-593-12TO 35C2-3-463-1Table 4-3. Organizational Troubleshooting-ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION3. ENGINE SHUTS DOWN SOON AFTER STARTING-continuedStep 3.Remove short from OP1, and use multimeter to check for presence of 24V DC across oil pressure switchOP1 while engine is being cranked.If 24V DC is present, check lube oil level. If level is low, add oil as required, and proceed to nextstep. If voltage across OP1 reads zero at any time during test, proceed to next step.Step 4.Place temporary short across oil pressure switch OP1 and use multimeter to check for presence of 24V DCacross oil temperature switch OT1 (see figure 4-40)NOTETo check this component refer to FO-3 to determine where these points are electrically accessibleto jumper. If 24V DC is present, switch OT1 may be defective and must be referred to next highermaintenance. If voltage is absent, proceed to next step.Step 5.Use a multimeter to check for presence of 24V DC across coolant temperature switch WT1 (see figure 4-40).NOTETo check this component refer to FO-3 to determine where these points are electrically accessibleto jumper.If 24V DC is present, test coolant temperature switch and replace if defective (see paragraph 4-82).If 24V DC is absent, proceed to next step.Step 6.Use a multimeter to check for presence of 24V DC across contacts of low fuel shutdown relay K8 (part ofAC-DC control relay assembly, 18, figure 4-19).If 24V DC is present, proceed to next step.If voltage is absent, remove temporary short from OP1 and refer to paragraph 4-50 on fuel linemaintenance and proceed to Malfunction 2, Step 2.4-24
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