CUMMINS QST30 - DC (Battery) Warnings

4-30
Copyright  2017 Cummins Inc.
TABLE 4-20. DC (BATTERY) WARNINGS (230, 231, 232)
WARNING
Many troubleshooting procedures present hazards that can result in severe personal inju-
ry or death. Only qualified service personnel with knowledge of fuels, electricity, and machinery haz-
ards should perform service procedures. Review Important Safety Instructions page.
Indicator(s) Possible Cause Corrective Action
5. If the batteries are OK, the problem
may be the harness, the engine inter-
face board (A31), the digital board
(A32), or the analog board (A33).
*5. If the battery voltage, electrolyte, and connec-
tions are OK, check the battery voltage at A31
J5-17. If the voltage is not OK (same as battery
voltage), disconnect J5 and isolate to the har-
ness or A31.
If the voltage is OK, check battery voltage at
A33 J1-31. If the voltage is not OK, replace
A31. If the voltage at A33 J1-31 is OK, isolate to
A33 or A32 using the analog input trouble-
shooting procedure (Table 4-30a/b).
“LOW DC
VOLTAGE”
(230) or
“WEAK
BATTERY”
(232),
warning
message.
“HIGH DC
VOLTAGE”
(231)
warning
message.
But battery
voltage is OK.
1. Recharge or replace the battery. Specific gravi-
ty for a fully charged battery is approximately
1.260 at 80 F (27 C).
2. Replenish electrolyte and recharge battery.
3. Clean and tighten or replace the battery cable
connectors and cables at the battery and the
generator set.
4. Adjust charge rate of battery charging circuit,
according to manufacturers instructions.
1. Weak or discharged battery.
2. Low electrolyte level in battery.
3. Battery connections loose or dirty.
4. Insufficient battery charging voltage.
2. If the battery voltage is OK, the prob-
lem may be the engine interface board
(A31), the digital board (A32), or the
analog board (A33).
*2. Check the battery voltage at A31 J5-17. If the
voltage is not OK (same as battery voltage), dis-
connect J5 and isolate to the harness or A31.
If the voltage is OK, check battery voltage at
A33 J1-31. If the voltage is not OK, replace
A31. If the voltage at A33 J1-31 is OK, isolate to
A33 or A32 using the analog input troubleshoot-
ing procedure (Table 4-30a/b).
1. Adjust charge rate of battery charging circuit ac-
cording to manufacturers instructions.
1. Excessive battery charging voltage.
*CAUTION: Wearing a wrist strap, set S12 to Off and A32 S5 to Standby before connecting/disconnecting harness plugs.