Open circuit between the high side driver andthelowsidereturn-Cylinder 3-OR-InjectorDriveModule(IDM)isunable tocompensateforroughidleusingcylinder balance-Cylinder3
423or 573
SID3
5
1
Inactive
Engine
Low side return is shorted to ground Cylinder3
453
SID 3
6
1
Inactive
Engine
Low side return is shorted to ground Cylinder4
454
SID 4
6
1
Inactive
Engine
Low side return is shorted to ground Cylinder5
455
SID 5
6
1
Inactive
Engine
Low side return is shorted to ground Cylinder6
456
SID 6
6
1
Inactive
Engine
Idle Validation Switch (IVS) signal is changingwhiletheAcceleratorPedal PositionSensor(APS)remainsconstant- Checkacceleratorpedalassembly
EGR driver module/ECM2 communication fault.ChecktheCAN2wiring(EGRtoECM andIDMtoECM).
368
SID 146
7
1
Inactive
Engine
Voltage from the Injector Driver Module (IDM)powerrelayislow-Checkalternator, batteryandrelay
534
SID 221
4
1
Inactive
Engine
Accelerator Pedal Position Sensor (APS) is changingwhiletheIdleValidationSwitch (IVS)signalremainsconstant-Check acceleratorpedalassembly
135
SID 230
11
1
Inactive
Engine
Cruise-PTO control switch circuit fault
221
SID 244
2
1
Inactive
Engine
Brake switch circuit fault - Check voltage levels-OR-Enginehourmemorylocations aredefective-ReplaceVehiclePersonality Module(VPM)