Symptom Tree
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Electronic fault codes are active |
For instructions on how to read active fault codes, refer to Procedure 101-007 (Electronic Controlled Fuel System) in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility. |
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Battery voltage is low |
Check the batteries and the unswitched battery supply circuit. Refer to the OEM service manual. |
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Starting procedure is not correct |
Verify the correct starting procedure. Refer to Procedure 101-014 (Normal Starting Procedure) in Section 1. |
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Engine cranking speed is too slow |
If the cranking speed is slower than 150 rpm, refer to the Engine Will Not Crank or Cranks Slowly symptom tree. |
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Fuel level is low in the tank |
Fill the supply tank. Refer to the OEM service manual. |
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Fuel leak |
Check the fuel lines, fuel connections, and fuel filters for leaks using the combustible gas detector service tool. Refer to a Cummins Authorized Repair Facility. |
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Ignition coil malfunctioning |
Check the ignition coil. Refer to Procedure 013-012 (Ignition Coil) in Section 6. |
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Spark plug(s) damaged or incorrect gap |
Inspect plug(s). Refer to Procedure 013-016 (Spark Plugs) in Section 6. |
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Auxiliary drive units are engaged |
Disconnect the auxiliary drive units. Refer to the OEM service manual. |
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| Contact a Cummins Authorized Repair Facility |
