TM 9-2320-289-34Table 2-2. Electrical Troubleshooting (Con’t)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONStep 7.Trace yellow lead to outside air door switch. (See wiring diagram E-26)If there is voltage, replace “VENT-A/C” switch, (See paragraph 10-22)If there is no voltage, perform step 8.Step 8.Trace yellow lead to 12 volt air conditioner relay, (See wiring diagram E-26)If there is voltage, replace outside air door switch. (See paragraph 10-22)If there is no voltage, repair circuit.2.ONE AIR CONDITIONER CONTROL INOPERATIVE (OTHER CONTROLS OPERATE)Step 1.Pull out air conditioner control panel. (See paragraph 10-22, REMOVAL, steps 2and 3) Connect both battery negative cables. (See TM 9-2320-289-20) Check forvoltage to inoperative switch.If there is voltage, disconnect both battery negative cables (seeTM 9-2320-289-20) and replace switch, (See paragraph 10-22)If there is no voltage, trace circuit. (See wiring diagram E-26)BATTERIES/CHARGING SYSTEM3.GENERATOR LIGHT REMAINS ON OR TURNS ON DURING OPERATION (ALL EXCEPT Ml 010AND Ml 028 WITH 200 amp SYSTEM)Step 1.Test appropriate alternator. (See paragraph 4-2)4.VOLTMETER IN RED (OVERCHARGE) ZONE (ALL EXCEPT Ml 010 AND Ml 028 WITH 200 ampSYSTEM)Step 1.Test appropriate alternator, (See paragraph 4-2)5.VOLTMETER IN YELLOW (UNDERCHARGE) ZONE (Ml 010 AND Ml 028 WITH 200 ampSYSTEM)Step 1.Remove current/voltage regulator cover. (See paragraph 4-4) With key in “OFF”position, check voltage at current/voltage regulator “1“ terminal.If there is no voltage, repair circuit to front battery positive (+) terminal. (Seewiring diagram E-10)If voltage is less than 12.0, perform step 2.If voltage is 12.0-12.6, perform step 3.2-42
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