TM-9-2320-362-14&P HMMWV Technical Manual Electrical Environmental System (EES) Download
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TM 9-2320-362-14&P Table 3-2. Unit Troubleshooting (Cont’d) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 10. FUEL GAGE DISPLAYS READING OF MORE THAN 3/8-TANK FULL AND STATUS INDICATOR ALARM AND LIGHT ARE ON (Cent’d) Step 6. Using multimeter, measure voltage at cable W66, pin “E.” If multimeter displays correct voltage (fig 3-3), replace faulty harness assembly (para 3-20). If multimeter does NOT display correct voltage (fig 3- 3), go to step 7. Step 7. Reconnect cable W66 to connector 12J2 on tach/hourmeter box . Step 8. Check “T” connection on cable assembly W66 at wires 28 and 11. FURL GAGE INDICATOR 3-2) 28A. If “T” connections are loose, tighten connections. If “T” connections are NOT loose, replace faulty “T” connector or cable assembly W66 (para 3-26). END OF TESTING DISPLAYS READING OF LESS THAN AN EIGHTH TANK FULL AND STATUS ALARM AND LIGHT DO NOT COME ON (REFER TO FIGURES 3-l THRU Condition: HMMWV engine has been running 10-15 minutes. Both light and alarm tests on status indicator are normal. NOTE ● When measuring voltage, measure against ground. ● Before starting procedure, see para 1-1. Step 1. Disconnect cable W64 from connector 12J1 on tach/hourmeter box . Step 2. Check status indicator alarm and fuel light. If alarm and fuel light are on, go to step 3. If alarm and fuel light are not on, refer to system manual for further troubleshooting. 3-23