TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
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e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT) CAUTION Read CAUTION on following page. TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION This question eliminates possible problems and determines where troubleshooting continues. KNOWN INFO Is continuity present from connector J31 pin 16 to a known good ground? NO CAUTION Read CAUTION on following page. TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION KNOWN INFO Is continuity present from connector PX26 socket 6 to a known good ground? NO YES If continuity is not present, wire 3083 is faulty. YES 10. 11. Faulty dashboard cable assembly. Faulty auxiliary panel cable assembly. Faulty engine control cable assembly. POSSIBLE PROBLEMS Tachometer illuminates. VOLTS gage OK. Engine speed sensor OK. Faulty dashboard cable assembly. Faulty auxiliary panel cable assembly. POSSIBLE PROBLEMS Tachometer illuminates. VOLTS gage OK. Engine speed sensor OK. Repair wire 3083 from connector P38 socket 2 to connector P31 socket 16 (para 2-40) or replace engine control cable assembly (para 7-72). Repair wire 3083 from connector PX26 socket 6 to terminal board TB2 position 26 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). Go to step 11 of this fault. TM 9-2320-365-20-1 2-356.6 Change 1