30. OIL PRESSURE LIGHT INOPERATIVE

27. FOUR-WHEEL DRIVE LIGHT INOPERATIVE (TRANSFER CASE IN FOUR-WHEEL DRIVE)

33. HEADLIGHTS INOPERATIVE IN HIGH AND LOW BEAM (ALL OTHER LIGHTS OPERATE)

/.25ton/TM-9-2320-289-20 CUCV Series Trucks at Unit level Manual
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Table 2-4. Electrical Troubleshooting TM 9-2320-289-20 (Con’t) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 3. Disconnect pink fuel tank sending unit lead and touch lead to any ground. If fuel gage reads “E“ (Empty), replace fuel tank sending unit, paragraph 3-11 or 3-12) If fuel gage does not read “E” (Empty), replace fuel gage. paragraph 4-7) 30. OIL PRESSURE LIGHT INOPERATIVE (See (See Step 1. Turn key to “RUN” position. Disconnect lead from oil pressure sending unit and touch lead to any ground. If light goes on, replace oil pressure sending unit. (See paragraph 4-14) If light does not go on, replace bulb. (See paragraph 4-7) If light still does not go on, trace circuit. (See wiring diagram F-4 or F-6) LIGHTING SYSTEM 31. BACK-UP LIGHT (ONE OR BOTH) WILL NOT TURN OFF Step 1. Disconnect lead from back-up light switch. If lights go out, replace switch. (See paragraph 4-19) If lights do not go out, trace circuit. (See wiring diagram 32. BACK-UP LIGHTS (BOTH) INOPERATIVE Step 1. Check 30 amp back-up light fuse. (See paragraph 4-12) Replace fuse if burned out. F-14, F-15, or F-17) Step 2. Ensure that all lead connectors are secure at back-up light switch and at back-up lights. Inspect connections for corrosion or damage. Clean any corroded connections if possible. If connections are damaged, replace. If all connections are secure and there is no damage, check bulbs. (See paragraph 4-28 or 4-29) 2-71

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