Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
Chevrolet
>>
2006
>>
Chevy Express G2500, Van Cargo Extended, 6.6 2
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System - 6.6L (LLY) - DTC P0401 To DTC P268A
>>
DTC P0650
>>
Circuit/System Verification
Circuit/System Verification
Turn ON the ignition, command the MIL ON and OFF with a scan tool.
The MIL lamp should turn ON and OFF when commanded ON and OFF.