TM 5-3805-293-23-2
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FUEL TRANSFER PUMP TEST CONTINUED
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Test Step 4. Fuel Prime Pump Relay and Fuel Prime Pump Circuit.
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1. Turn ignition switch and battery disconnect switch to the OFF position.
2. Disconnect harness connector FE-C4 (Figure 17, Item 3) from the fuel prime pump relay (Figure 17, Item 1).
3. Using a digital multimeter, test fuel prime pump control circuit A893-OR for continuity between relay harness
connector FE-C4 terminal 4 (Figure 17, Item 4) and fuel prime pump harness connector FE-C4 terminal 1
(Figure 17, Item 5). There should be good continuity.
a. Continuity - Relay is faulty.
(1) Remove screw (Figure 17, Item 2) and fuel prime pump relay (Figure 17, Item 1) from machine.
(2) Install new fuel prime pump relay (Figure 17, Item 1) and screw (Figure 17, Item 2) on machine.
(3) Connect harness connector FE-C4 (Figure 17, Item 3) to the fuel prime pump relay (Figure 17, Item 1).
b. No Continuity - Fuel prime pump control circuit A893-OR is open between relay harness connector FE-C4
and fuel prime pump harness connector FE-C4. Replace fuel harness (WP 0064).
Figure 17. Fuel Prime Pump Relay and Fuel Prime Pump Connectors.
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END OF TASK