TM 9-6115-730-24
0009
TROUBLESHOOTING USING GSC FAULT CODES - Continued
NOTE
When the GSC activates the FCR, K7 is displayed on GSC lower display. An internal set of FCR
contacts short between Relay Module pins A1-1 and A1-2 on the GSC to maintain power at A1-2
if the ECS is placed in COOL DOWN/STOP position with the engine running.
SYMPTOM
51.
CID 447 FMI 12
MALFUNCTION
GSC Fuel Control Relay (FCR) Output.
FMI 12 - Failed Component.
CORRECTIVE ACTION
STEP 1.
Check fuse A1F10 on GSC. Replace fuse if bad.
STEP 2.
Verify the problem has been resolved. If not, proceed to the next step.
STEP 3.
Check all GSC fuses (FO-4, Sheets 3 and 5). If GSC fuses are ok, replace GSC
STEP 4.
Verify the problem has been resolved.
NOTE
The programmable spare relays (PSR1 and PSR2) are used for activating customer equipment.
PSR1 is normally closed while PSR2 is normally open.
SYMPTOM
52.
CID 448 FMI 12
MALFUNCTION
GSC programmable spare relays (PSR1 and PSR2) output.
FMI 12 - Failed Component.
CORRECTIVE ACTION
STEP 1.
Turn the ENGINE CONTROL switch to OFF/RESET. Battery Disconnect Switch
is OFF; DEAD CRANK SWITCH is OFF.
STEP 2.
Remove fuse A1F8 and A1F9 from rear of GSC.
STEP 3.
Check fuse A1F8 and A1F9.
a. If fuse is bad, replace A1F8 and/or A1F9. Verify the problem has been
resolved.
b. If fuse is not bad, repair or replace wiring harness (WP 0088 Table 1 and
Table 2 and WP 0044). Verify the problem has been resolved.
c.
If wiring is good, proceed to the next step.
STEP 4.
Disconnect wire(s) from GSC relay module (RM) A1-26 per FO-4, sheet 5.
0009-43
