Operation and maintenance manual

QSB4.5 and QSB6.7 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-45
Fault Code Warning Lamps Do Not Illuminate
Cause Correction
STEP 1
Keyswitch is in the OFF position
............. Turn the keyswitch to the ON position.
OK
Go To Next Step
STEP 2
Battery voltage supply to the electronic control
module (ECM) is low, interrupted, or open
.............
Check the battery connections, the fuses, and the
unswitched battery supply circuit. Refer to the
OEM service manual.
OK
Go To Next Step
STEP 3
Idle shutdown or PTO shutdown features are
activated
.............
Check the time limit on idle and PTO shutdowns
with an electronic service tool. Refer to Section 1.
OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility