TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 4.
If engine does not crank, check for 24 Vdc at each terminal of CB-2 and ground.
STEP 5.
If voltages are not present, replace CB-2.
STEP 6.
Check for 24 Vdc at each terminal of R4 Shunt and ground.
STEP 7.
If voltages are not present, replace R4 Shunt.
STEP 8.
Check for 24 Vdc at each terminal of diode D1 and ground.
STEP 9.
If voltages are not present, replace diode D1.
STEP 10.
With DEAD CRANK SWITCH in CRANK position, check for 24 Vdc at terminal 3
of the starter motor magnetic switch (SMMS) relay and ground.
STEP 11.
If voltage present, check for ground at terminal 4 of the SMMS relay.
STEP 12.
If voltage is not present, check for 24 Vdc at TB5-5 and ground.
STEP 13.
If voltage present, check wiring or replace Battery Disconnect Switch (WP 0050).
STEP 14.
If voltage is not present, check wiring or replace DEAD CRANK SWITCH
STEP 15.
Check for 24 Vdc at pinion solenoid terminals (23A10 (+) wire and black jumper
wire (-)).
NOTE
It may be necessary to remove cover from pinion solenoid to access solenoid terminals.
STEP 16.
If voltage is not present, check wiring or replace SMMS relay (WP 0054).
STEP 17.
If voltage is present, check cable at starter or replace starter (WP 0074).
NOTE
When completing CID 444 FMI 12 (WP 0009) do not reinstall fuse A1F4.
STEP 18.
On EMCP set ENGINE CONTROL switch to START. If engine does not crank,
go to Generator Set Control (GSC) fault isolation for CID 444 FMI 12 (WP 0009).
STEP 19.
Set ENGINE CONTROL switch to START observing the following conditions:
a. Engine crank indicator K4 will appear on lower display of GSC for the time
duration (in seconds) described by setpoint P017.
b. Engine crank indicator K4 will extinguish for the same duration.
c.
Engine crank indicator K4 will appear again for the P017 duration.
d. Cycle will cease when time exceeds P018 duration (in seconds).
STEP 20.
If engine crank indicator K4 does not appear and extinguish properly, replace
GSC (WP 0040).
STEP 21.
Verify the problem has been resolved.
0011-4
