Cummins

488

UnclassifiedCooling

What This Code Means

Battery voltage below 11 V; Battery does not maintain a charge; Battery voltage is high; Engine intake manifold temperature has exceeded 185 °F (85 °C) for more than 90 seconds; Engine has overheated; Intake manifold temperature has risen above the shutdown trip point; Derate lamp active; High Intake Manf 1 temp message displayed; Engine hot shutdown has occurred; Cooldown timers were bypassed; Warning lamp active; Engine Hot Shut Down message displayed; Communication between the engine control (ECM) and the PowerCommand 3.3 control has been severed; Shutdown lamp active; CAN Data Link Failure message displayed; Control is in Battle Short mode; Battle Short Active message displayed; Triggered configurable customer input alarm (e.g., Low Fuel Day Tank, Water In Fuel, Ground Fault)

Possible Causes

  • •Battery not completely charged
  • •Battery is old
  • •Incorrect battery voltage setup
  • •Battery voltage above high battery voltage threshold
  • •Battery charger overcharging battery
  • •Faulty engine DC alternator
  • •High ambient temperature
  • •Enclosure air intake blocked
  • •Coolant level is below specification
  • •Radiator blocked
  • •Enclosure air discharge blocked
  • •Fan belt is broken or loose
  • •Large load
  • •Operator pressed the Emergency Switch before the generator set completed the cooldown operation
  • •Operator pressed the Stop button before the generator set completed the cooldown operation
  • •Active E-Stop button
  • •Battle Short mode manual activation to bypass fault shutdowns during emergencies
  • •Configurable input condition met

Suggested Actions

  1. 1Using a voltmeter or multimeter, determine if the voltage is below 11 V. If so, recharge the battery.
  2. 2Replace the battery.
  3. 3Make sure the correct batteries are installed.
  4. 4Make sure the correct battery charger is installed.
  5. 5If the previous steps do not resolve the problem, contact your Cummins service representative.
  6. 6Reduce loads or recirculation of discharge air to generator in elevated ambient.
  7. 7Inspect enclosure air intake for dirt, debris, or obstructions.
  8. 8Remove blockage or snow/ice buildup as applicable.
  9. 9Check coolant level.
  10. 10Add coolant as necessary.
  11. 11Inspect radiator for dirt, debris or obstructions.
  12. 12Review fault code 151 correction list for other possible causes
  13. 13Contact authorized service technician if in doubt
  14. 14Run the generator set at 10% or less load for three minutes before engine shutdown to avoid hot shutdowns
  15. 15Ensure the E-Stop button is not active
  16. 16Reset the Local/Remote Emergency Stop
  17. 17If possible, investigate any fault codes that are being bypassed
  18. 18Allow the engine to cool down completely before proceeding (if the engine can be stopped)
  19. 19Check the Input requirement details and correct the condition
  20. 20Program input functions using the InPower service tool or by accessing the Setup menu

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