Operation and maintenance manual

Troubleshooting Symptoms Charts QSB4.5 and QSB6.7
Page TS-44 Section TS - Troubleshooting Symptoms
Fault Code Warning Lamps Stay On (No Apparent Reason)
Cause Correction
STEP 1
Diagnostic shorting plug is installed
............. Remove the diagnostic shorting plug.
OK
Go To Next Step
STEP 2
Diagnostic switch is in the ON position
............. Turn off the diagnostic switch.
OK
Go To Next Step
STEP 3
Electronic fault codes are active
.............
For instructions on how to read active fault codes,
refer to Section 1. If fault codes are active, contact
a Cummins Authorized Repair Facility.
OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility