B5.9G, B5.9LPG, B Gas Plus, B LPG Plus – Alternator Not Charging or Insufficient Charging

Symptom Tree  

Vehicle gauge is malfunctioning

Check the vehicle gauge. Refer to the OEM service manual.

 

Alternator belt is loose or missing

Check the alternator belt tension. Check pulleys in belt wrap, and repair, if necessary. Replace belt or belt tensioner, or both. Refer to Procedure 008-087 (Fan Belt Tensioner) in Section A.

 

Alternator pulley is loose on the shaft

Tighten the pulley. Refer to a Cummins Authorized Repair Facility.

 

Electrical system is “open” (blown fuses, broken wires, or loose connections)

Check the fuses, wires, and connections. Refer to a Cummins Authorized Repair Facility.

 

Battery cables or connections are loose, broken, or corroded (excessive resistance)

Check the battery cables and connections.

 

Batteries have malfunctioned

Check the condition of the batteries. Replace the batteries, if necessary. Refer to the OEM service manual.

 

Battery temperature is above specification

Position the batteries away from heat sources. Refer to the OEM service manual.

 

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.

 
Contact a Cummins Authorized Repair Facility

Last Modified:  16-Feb-2005