TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0015 00 0015 00-6 HEATING SYSTEMS TROUBLESHOOTING (Contd) Table 1. Heating Systems Troubleshooting Procedures (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. ENGINE MANIFOLD HEATER DOES NOT WORK (Contd) Test 8. Check continuity of ignition coil harness. 1. Disconnect ignition coil harness from fuel pump and ignition coil. 2. Set multimeter to RX 1. 3. Connect multimeter negative lead to lead 55 and multimeter positive lead to pin A. Test 9. Test manifold heater fuel system. 1. If continuity is not present, repair harness (WP 0090 00). 2. If continuity is present, go to test 9. Refer to WP 0006 00, table 3, malfunction 1, steps 2 through 4. TEST 8 STEP 3 IGNITION COIL WIRING HARNESS PIN A LEAD 55