TM 9-2320-272-24-1
Table 2-3. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 2. Test continuity at air pressure switches.
Step 1. Start engine (TM 9-2320-272-10) and allow air pressure to reach normal operating
pressure.
Step 2. Set multimeter to RX1 for continuity reading.
Step 3. Disconnect lead 57 at air pressure switch B.
Step 4. Touch positive lead of multimeter to contact end of lead 57 and negative lead of
multimeter to frame ground.
a. If continuity is present, go to step 5.
b. If continuity is not present, replace lead 57 (para. 3-131).
Step 5. Connect lead 57 to air pressure switch B.
Step 6. Disconnect lead 578 from air pressure switch A.
Step 7. Touch positive lead of multimeter to contact end of lead 578 and negative lead of
multimeter to frame ground.
a. If continuity is present, go to step 8.
b. If continuity is not present, replace lead 578 (para. 3-131).
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