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 8. COOLANT TEMPERATURE GAGE DISPLAYS COLD ENGINE READING AND STATUS INDICATOR ALARN AND LIGHT ARE ON (Cont’d) Step 4. Step 5. Step 6, Step 7. Step 8. Check coolant temperature gage reading. If coolant temperature gage displays normal reading, refer to system manual for further troubleshooting. If coolant temperature gage does NOT display normal reading, replace faulty cable assembly W64 (para 3- 25). Reconnect cable W64 to connector 12J1 on tach/hourmeter box . Remove engine access cover and disconnect safety lanyard. Disconnect cable W66 from connector 12J2 on tach/hourmeter box. Check coolant temperature gage reading. If coolant temperature replace faulty harness If coolant temperature reading, go to step 7. gage displays normal reading, assembly (para 3-20). gage does NOT display normal Reconnect cable W66 to connector 12J2 on tach/hourmeter box . Under engine access cover, check “T” connection on cable assembly W66 at wire 33, 33A, and 33B. 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 3-20