TM 9-6115-730-24
0009
TROUBLESHOOTING USING GSC FAULT CODES - Continued
SYMPTOM
37.
CID 334 FMI 02
CID 334 FMI 03
CID 334 FMI 04
MALFUNCTION
Cool Down circuit (P7-36).
FMI 02 - Erratic, Intermittent, or Incorrect Signal.
FMI 03 - Voltage Above Normal.
FMI 04 - Voltage Below Normal.
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON, Set DEAD CRANK SWITCH to NORMAL.
Turn the ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 2.
Measure voltage between cool down relay (CDR) pin 13 (+) and TB3-1 (-) per
FO-4, sheets 2 and 4.
a. If voltage is not approximately 24 Vdc (battery voltage), repair or replace
control box harness (WP 0044). Verify the problem has been resolved.
b. If harness is good, replace relay CDR (WP 0042). Verify the problem has
been resolved.
c.
If harness repair does not resolve fault and CDR is good, check all GSC
fuses (FO-4, Sheets 3 and 5). If GSC fuses are ok,.continue to STEP 3.
STEP 3.
Turn the ENGINE CONTROL switch to MANUAL START and allow engine to
accelerate to operating speed. After 3 minutes, turn ENGINE CONTROL switch
to COOL DOWN/STOP..
STEP 4.
Measure voltage between cool down relay (CDR) pin 13 (+) and GSC P7-36 (-)
for less than 1.0 Vdc, per FO-4, sheets 1, 2, and 4.
STEP 5.
If fault still exist, replace GSC (WP 0041). Verify the problem has been resolved.
0009-31
