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ARMY  TM  9-2805-262-14 AIR  FORCE  TO  38G2-90-1 NAVY  NAVFAC  P-8-613-14E Table 5-1. Direct Support Troubleshooting Procedures (cont). Malfunction Test  or  Inspection Corrective  Action Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. NOTE Repeat step 2 for all four high tension cables. Remove high tension cable from spark plug. Ground cable and hold spring approximately 1/4 in. (6 cm.) from engine. Pull start engine and check for spark. If spark is present remove and inspect spark plug (para. 4-28), NOTE Perform steps 3 through 9 for both right and left hand ignition control units. Remove  ignition  control  unit  oover  and  check  for  moisture  or  foreign  material. If moisture is present clean and dry terminals and connections and repeat step 2. Check low voltage cable end to end continuity. If continuity is not present in all three lines replace low voltage cable (para. 5-16). Remove wiring from no.1 terminal on ignition control unit module. Measure resistance between terminal no.1 and ground. If reading is less than 1 Megohm replace ignition module (para.5-14). Remove wiring from terminals no.5 and no.6 and check resistance. Meter should show an initial deflection then a reading of 1 Megohm. If final reading is not 1 Megohm then replace ignition control unit ignition module (para.5-14). Check  transformer  resistance  between  white  and  brown  wires. If resistance is more than 1 ohm replace transformer (para.5-13). Check  transformer  resistance  between  white  wire  and  spring  on  end  of  high  voltage  cable. If resistance is not between 1400 and 2500 ohms, replace transformer (para.5-13). 5-4


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