TM 9-6115-730-24
0008
TROUBLESHOOTING USING AL FAULT CODES - Continued
SYMPTOM
2.
AL 2
MALFUNCTION
Low Coolant Temperature
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
Turn the ENGINE CONTROL switch to MANUAL START.
STEP 2.
On GSC keypad, press ALARM CODES.
STEP 3.
Verify AL2 appears on upper display.
NOTE
This fault will be displayed if the coolant temperature is below 70 F (programmable by setpoint
P016), and may occur for a short time after start up.
STEP 4.
Verify if any fault codes or engine fault codes are displayed on upper display and
record.
a. If fault codes displayed, troubleshoot per fault code (WP 0009).
b. Verify setpoint P016 (WP 0083, Table 4).
STEP 5.
Verify the problem has been resolved.
CAUTION
The dipstick is marked so that the crankcase oil can be checked while engine is running or
stopped. Always make sure dipstick is checked. Remove oil filler cap when checking oil with
engine running.
SYMPTOM
3.
AL 3
MALFUNCTION
Low Engine Oil Pressure
Low engine operating speed can cause this alarm code. Note and record engine speed for reference.
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
Turn the ENGINE CONTROL switch to MANUAL START.
STEP 2.
On GSC keypad, press ALARM CODES.
STEP 3.
Verify AL3 appears on upper display.
STEP 4.
Verify if any fault codes or engine fault codes are displayed on upper display and
record.
0008-3
