TM 9-2320-260-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 3. Test starter lockout ground circuit.
Step 1. Set multimeter to RX1 scale.
Step 2. Disconnect harness connector at protective control box.
Step 3. Touch positive lead of multimeter to lead 93 (pin F) at harness connector.
Step 4. Touch negative lead of multimeter to frame ground. Continuity should be present.
a. If continuity is present, go to test 6.
b. If continuity is not present, go to test 4.
Test 4. Test continuity of lead 93.
Step 1. Disconnect lead 93 at oil pressure starter lockout switch.
Step 2. Disconnect wiring harness at protective control box.
Step 3. Set multimeter to RX1 scale.
Step 4. Touch positive lead of multimeter to contact end of lead 93 at lockout switch.
Step 5. Touch negative lead of multimeter to pin F at protective control box wiring harness.
Continuity should be present.
a. If continuity is present, go to test 5.
b. Repair or replace lead if continuity is not present (para. 4-52).
Test 5. Test continuity of lockout switch.
Step 1. Remove oil pressure starter lockout switch (para. 4-19).
Step 2. Set multimeter to RX1 scale.
Step 3. Touch positive lead of multimeter to contact end of lockout switch.
Step 4. Touch negative lead of multimeter to frame ground.
a. If continuity is present, go to test 6.
b. Replace oil pressure starter lockout switch if continuity is not present (para. 4-19).
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