CM2150 Electronic Control System – Engine Cranks Slowly — (Electric Starter)

Batteries are cold

Check the battery heater. Refer to the OEM service manual.

Electronic fault codes active or high counts of inactive fault codes

Read the fault codes with an electronic service tool. Refer to Section TF.

Battery voltage is low

Check the batteries and the unswitched battery supply circuit. Refer to Procedure 013-007 in Section 13. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.

Broken, loose, or corroded starting circuit connections

Inspect, clean, and tighten both the positive and negative connections between the starting motor and battery, including the magnetic switch. Refer to Procedure 013-009 in Section 13. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.

Battery capacity is below specification

Refer to Procedure 013-007 in Section 13. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure. Replace the batteries if necessary.

OEM starter interlock devices engaged

Check the starter interlock devices. Refer to the OEM service manual.

Lubricating oil pressure switch, gauge, or sensor is malfunctioning or is not in the correct location

Check the oil pressure switch, gauge, or sensor for correct operation and location. Refer to the OEM service manual.

Battery cables are not the correct gauge or length

Replace the battery cables with larger gauge or shorter length cables. Refer to the OEM service manual.

Engine-driven units are engaged

Disengage engine-driven units.

Starting circuit component is malfunctioning

Check the starting circuit components. Refer to the OEM service manual.

Starter motor malfunction

Check the voltage drop at the starting motor. Refer to Procedure 013-020 in Section 13. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.

Starting motor pinion or ring gear is damaged

Remove the starting motor, and inspect the gear. Refer to Procedure 013-020 in Section 13. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.

Lubricating oil level is above specification

Check the oil level. Verify the dipstick calibration and oil pan capacity. Fill the system to the specified level. Refer to Procedure 007-009 in Section 7. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.

Lubricating oil does not meet specifications for operating conditions

Change the oil and filters. Refer to Procedure 018-003 in Section V. This procedure can be found in the appropriate Operation and Maintenance Manual or the Owners Manual, to verify the correct lubricating oil is being used.

Crankshaft rotation is impaired

Check the crankshaft for ease of rotation. Refer to Procedure 001-016 in Section 1. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.

Internal engine damage

Analyze the oil and inspect the filters to locate an area of probable damage. Refer to Procedure 007-083 in Section 7. Use the approrpriate Service Manual or Troubleshooting and Repair Manual for the correct procedure.