TM 9-2320-361-20 Table 2-4. Electrical Troubleshooting (Contd). MALFUNCTION TEST OR lNSPECTlON CORRECTIVE ACTION Test 7. Test fuel pump-to-ignition coil wiring harness. Step 1. Disconnect wiring harness input from ignition coil. Step 2. Set multimeter to 24 Vdc scale. Step 3. Touch multimeter negative lead to pin B (neg) of wiring harness at ignition coil. Step 4. Touch multimeter positive lead to pin A (pos) of wiring harness at ignition coil. a. If voltage is present, go to test 9. b. If voltage is not present, go to test 8. 2-140