B5.9G, B5.9LPG, B Gas Plus, B LPG Plus – Fault Code Warning Lamps Do Not Illuminate

Symptom Tree  

Keyswitch is in the OFF position

Turn the keyswitch to the ON position.


Battery voltage supply to the electronic control module (ECM) has been lost

Check the battery connections. Check the fuses and the unswitched battery supply circuit. Refer to the OEM service manual or a Cummins Authorized Repair Facility.


Fault code warning lamps are burned out

Check the warning lamps for voltage. Replace the bulbs if necessary. Refer to the OEM service manual.

Contact a Cummins Authorized Repair Facility

Last Modified:  15-Feb-2005