16. WAIT LIGHT INOPERATIVE (ENGINE COLD)

17. WAIT LIGHT ON CONTINUOUSLY WITH KEY IN RUN POSITION

/.25ton/TM-9-2320-289-20 CUCV Series Trucks at Unit level Manual
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TM 9-2320-289-20 Table 2-4. Electrical Troubleshooting (Con’t) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Wire Color Key Position Instructions and Normal Results Purple/white “START“ Approximately 12.0 volts at wire. If voltage is not correct, trace circuit. Light blue “ RUN “ Jump wire to ground; glow plug relay energizes. If relay does not energize, trace circuit. If circuit is good, replace relay. (See paragraph 4-8) Dark blue Pink/black Orange Yellow "RUN“ “RUN“ “RUN“ “OFF” Jump wire to ground; “WAIT” light turns on. If “WAIT” light does not turn on, replace bulb. (See paragraph 4-7) If “WAIT” light still does not turn on, trace circuit. Approximately 12.0 volts at wire. If voltage is not correct, trace circuit. Jump light blue wire to ground; Approximately 12.0 volts at orange wire. If voltage is not correct, trace circuit. 800 ohms (minimum) at wire (engine cold). If resistance is not correct, trace circuit. If resistance is still not correct, replace glow plug switch. (See paragraph 3-20) Black "OFF" 0 ohms at wire. Clean connection and tighten if not correct. Pink/black and “OFF” 6-10 ohms between wires. If resistance is light blue at not correct, replace glow plug relay. (See glow plug relay paragraph 4-8) 16. “WAIT” LIGHT INOPERATIVE (ENGINE COLD) Step 1. Check 20 amp engine control fuse and 20 amp ignition fuse. (See paragraph 4-12) Replace fuse if burned out. 2-63

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