TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
Page 538 of 1760
CAUTION Read CAUTION on following page. TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION KNOWN INFO e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT) If continuity is not present, wire 1550 in auxiliary panel cable assembly is faulty. If continuity is present, wire 1550 in dashboard cable assembly is faulty. YES NO 9. Faulty dashboard cable assembly. Faulty auxiliary panel cable assembly. POSSIBLE PROBLEMS Tachometer illuminates. VOLTS gage OK. Engine speed sensor OK. Is continuity present from connector P901 pin 4 to connector P913 pin 12? Repair wire 1550 from connector P901 pin 4 to connector P913 pin 12 (para 2-40) or replace auxiliary panel cable assembly (para 7-49). Repair wire 1550 from connector J913 socket 12 to connector PX26 socket 1 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). TM 9-2320-365-20-1 2-356.4 Change 1