Product Manual B

6. Troubleshooting 7-2018
96 A045R242 (Issue 12)Copyright © 2018 Cummins Inc.
4. Battery is old and does not maintain a charge
Replace the battery.
Code 488 - Intake Manifold Temperature High (Warning)
Logic:
Engine intake manifold temperature has exceeded 185 °F (85 °C) for more than 90
seconds.
Possible Cause:
1. High ambient temperature
2. Enclosure air intake blocked
3. Coolant level is below specification
4. Radiator blocked
5. Enclosure air discharge blocked
6. Fan belt is broken or loose
Diagnosis and Repair:
1. High ambient temperature
a. Reduce loads or recirculation of discharge air to generator in elevated
ambient.
2. Enclosure air intake blocked
a. Inspect for dirt, debris, or obstructions.
b. Remove blockage or snow/ice buildup as applicable.
3. Coolant level is below specification
a. Check coolant level.
b. Add coolant as necessary.
4. Radiator blocked
a. Inspect for dirt, debris or obstructions.
b. Remove blockage or winterfront as applicable.
5. Enclosure air discharge blocked
a. Inspect for dirt, debris, or obstructions.
b. Remove blockage or snow/ice buildup as applicable.
6. Fan belt is broken or loose
a. Inspect belt(s) for damage, wear, and proper tension.
b. Repair or replace if damaged or worn.
Code 1438 - Fail to Crank (Shutdown)
Logic: