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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 4. WITH PARKING BRAKE NOT SET, PARKING BRAKE DASH LIGHT IS OFF, AND STATUS INDICATOR ALARM AND LIGHT DO NOT COME ON (Cont’d) Step 3. Reconnect cable W64 to connector 12J1 on tach/hourmeter box . Disconnect cable W64 from connector on shelter. Step 4. Using multimeter, measure voltage at cable W64, pin “G.” If multimeter displays about +28 VDC, refer to system manual for further troubleshooting If multimeter does NOT display about +28 VDC, replace faulty cable assembly W64 (para 3-25). Step 5. 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. Step 6. Using multimeter, measure voltage at If multimeter displays about +28 harness assembly (para 3-20). cable W66, pin “G.” VDC, replace faulty If multimeter does NOT display about step 7. Step 7. Reconnect cable W66 to connector 12J2 on box . +28 VDC, go to tach/hourmeter Step 8. Under engine access cover, check “T” connection on cable assembly W66 at wire 67. If “T” connection is loose, tighten connection. If “T” connection is NOT loose, replace faulty “T” connector or cable assembly W66 (para 3-26). END OF TESTING 3-14