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).
Test or Inspection
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),
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
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).