TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 2.
Check fuses A5F1, A5F2, and A5F3 on AC transformer box (ATB) A5 (FO-4,
STEP 3.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP set ENGINE CONTROL switch to START. Do not connect a load.
NOTE
Voltage should correspond with reconfiguration board settings line-to-line.
STEP 4.
Measure the line-to-line voltage between the fuses on ATB A5. If voltages are not
correct, repair or replace wiring between generator and ATB A5 (WP 0043 and
STEP 5.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 6.
Disconnect P7 from rear of GSC (FO-4, sheet 1).
a. Measure resistance between P7-16 to P7-10. If resistance is not 6 to 8 ohms,
check wiring or replace ATB A5 (WP 0041 Guide).
b. Measure resistance between P7-16 to P7-11. If resistance is not 6 to 8 ohms,
check wiring or replace ATB A5 (WP 0041 Guide).
c.
Measure resistance between P7-16 to P7-12. If resistance is not 6 to 8 ohms,
check wiring or replace ATB A5 (WP 0041 Guide).
STEP 7.
Reconnect P7 to rear of GSC (FO-4, sheet 1).
STEP 8.
Remove A5F1, A5F2 and A5F3 fuses from ATB A5.
a. Measure resistance between A5F1 and A5F2 on A5 side. If resistance is not
2100 +/- 100 ohms, replace ATB A5 (WP 0041 Guide).
b. Measure resistance between A5F2 and A5F3 on A5 side. If resistance is not
2100 +/- 100 ohms, replace ATB A5 (WP 0041 Guide).
c.
Measure resistance between A5F1 and A5F3 on A5 side. If resistance is not
2100 +/- 100 ohms, replace ATB A5 (WP 0041 Guide).
STEP 9.
If ATB A5 is good, replace GSC (WP 0040).
STEP 10.
Verify the problem has been resolved.
0011-7
