TM 9-2320-289-34
Table 2-2. Electrical Troubleshooting (Con’t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check front battery for proper charge and electrolyte level.
(See
TM 9-2320-289-20) Remove and clean front battery cable and clamp connections.
Service or replace front battery. Replace worn or damaged battery cables
and clamps. (See TM 9-2320-289-20)
Step 3.
Check voltage at current/voltage regulator “2” terminal.
If there is no voltage, repair circuit to rear battery positive terminal. (See
wiring diagram E-10)
If voltage is less than 24.0, perform step 4.
If voltage is 24.0-25.2, perform step 5.
Step 4.
Check rear battery for proper charge and electrolyte level.
(See
TM 9-2320-289-20) Remove and clean rear battery cable and clamp connections.
Service or replace rear battery. Replace worn or damaged battery cables and
clamps. (See TM 9-2320-289-20)
Step 5.
Turn key to “RUN” position. Check voltage at upper alternator positive (+)
terminal.
If voltage is above 9.5, perform step 8.
If there is no voltage, perform step 6.
Step 6.
Check voltage at current/voltage regulator “ A“ terminal.
If voltage is above 9.5, repair circuit to alternator positive (+) terminal. (See
wiring diagram E-10)
If there is no voltage, perform step 7.
Step 7.
Check voltage at current/voltage regulator relay “IGN” terminal.
If there is no voltage, replace 20 amp engine control fuse (see
TM 9-2320-289-20) and trace circuit (see wiring diagram E-10).
If there is voltage, repair circuit to current/voltage regulator “A” terminal.
(See wiring diagram E-10)
Step 8.
Check voltage at upper alternator “IGN” terminal.
If voltage is above 9.5, perform step 11.
If there is no voltage, perform step 9.
Step 9.
Check voltage at current/voltage regulator relay “FLD” terminal.
If voltage is above 10.5, repair circuit to upper alternator ”IGN” terminal.
(See wiring diagram E-10)
If there is no voltage, perform step 10.
2-43
