TM 9-2320-289-20Table 2-4. Electrical Troubleshooting (Con’t)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONWARNINGResistor may be hot. Use care when performing this step or injury topersonnel may occur.Step 5.Step 6.Step 7.Step 8.Disconnect batteries, pull out bracket and resistor assembly (see paragraph 4-44,REMOVAL, step 4), disconnect output (red wire) from relay, disconnect input (bluewire) from input to resistors. Connect positive lead of multimeter to blue wire;connect negative lead to red wire. Check resistance between resistors and ground.Resistance should be 0.28 ohms.If resistance is not correct, replace resistor, connect glow plug leads andperform step 6.If resistance is correct, connect glow plug leads and perform step 6.Check for voltage between glow plug relay terminal where pink/black lead connectsand ground.If there is voltage, perform step 7.If there is no voltage, trace circuit. (See wiring diagram F-7 or F-8)Check for voltage between glow plug relay terminal where light blue lead connectsand ground.If there is voltage, perform step 8.If there is no voltage, replace glow plug relay. (See paragraph 4-8)Check for voltage at light blue lead on glow plug module.If there is no voltage, trace circuit (See wiring diagram F-7 or F-8)If there is voltage, perform Electrical Troubleshooting malfunction #15.2-65.0/(2-65.1 blank)Change 2
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