TM 9-2320-260-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 2. Test cold start switch for voltage.
Step 1. Set multimeter to a range that will measure 24 volts.
Step 2. Disconnect leads 569 (pins R and B) and 570 (pin S) from cold start switch.
Step 3. Touch positive lead of multimeter to contact end of lead 569.
Step 4. Touch negative lead of multimeter to frame ground. Voltage should be present.
a. If voltage is present, go to step 5.
b. Repair or replace lead 569 if voltage is not present (para. 4-52).
Step 5. Install lead 569 into cold start switch.
Step 6. Touch positive lead of multimeter to contact end of pins at cold start switch.
Step 7. Touch negative lead of multimeter to frame ground. Voltage should be present.
a. If voltage is present, go to test 3.
b. Replace cold start switch if voltage is not present (para. 4-17).
Test 3. Test continuity of leads and resistor.
Step 1. Disconnect lead 575 from glow plug.
Step 2. Set multimeter to RX1 scale.
Step 3. Touch positive lead of multimeter to contact end of lead 575 at glow plug.
Step 4. Touch negative lead of multimeter to lead 575 at resistor. Continuity be present.
a. If continuity is present, go to step 5.
b. Repair or replace lead 575 if continuity is not present (para. 4-52).
Step 5. Disconnect lead 571 from cold start indicator lamp.
Step 6. Touch positive lead of multimeter to contact end of lead 571 at indicator lamp.
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