Cummins ISX12 CM2250 (2010-12) Fault Code: 3422 PID: SPN: 4344 FMI: 3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit- Voltage Above Normal or Shorted to High Source
Circuit Description
The aftertreatment diesel exhaust fluid line heater 3 is controlled by the aftertreatment diesel exhaust fluid controller, and receives power through the switch side of the diesel exhaust fluid line heater relay.
Component Location
The aftertreatment diesel exhaust fluid line heater 3 is located on the suction line between the diesel exhaust fluid tank and diesel exhaust fluid dosing unit.
Conditions for Running the Diagnostics
This diagnostic runs when the keyswitch is in the ON position and the heater is commanded on.
Conditions for Setting the Fault Codes
The aftertreatment diesel exhaust fluid controller detects that the line heater voltage is above a calibratible value.
Action Taken When the Fault Code is Active
The electronic control module (ECM) illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.
The line heater will be disabled.
Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.
Conditions for Clearing the Fault Code
To validate the repair, perform a key cycle, and then use INSITE? electronic service tool to perform the Diesel Exhaust Fluid Doser System Heater Test found under ECM Diagnostic Tests.
The fault code status displayed by INSITE? electronic service tool will change to INACTIVE immediately after all three line heaters are commanded on and the diagnostic runs and passes.
The ECM will turn off the amber CHECK ENGINE lamp after the diagnostic runs and passes.
For On-Board Diagnostic (OBD) engines, the ECM will turn off the MIL after three consecutive trips where the diagnostic runs and passes.
The ?Reset All Faults? command in INSITE? electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Shop Talk
Possible causes of this fault include:
Malfunctioning line heater
Short circuit to battery in the aftertreatment diesel exhaust fluid controller harness
Malfunctioning aftertreatment diesel exhaust fluid contoller.
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.
Possible Cause:
1) Aftertreatment DEF line heater 3 failure
2) Aftertreatment DEF controller failure
3) ECM calibration
Related
-
Volvo Impact 2021 Trucks & Buses 06.2021 DVD 9116 Spare Parts Catalog
Trucks software $55.00Rated 0 out of 5
Related products
-
Allison 1000 & 2000 Gen 4 P0719 Brake Switch ABS Input Low
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0848 Transmission Pressure Switch Solenoid D Circuit High
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0870 Transmission Pressure Switch Solenoid E Circuit
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1064 J1850 (Class 2) TBC Controller State of Health Failure
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0123 Pedal Position Sensor Circuit High Voltage
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1016 Class 2 J1850 (Class 2) Powertrain Controller State of Health Failure
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0875 Transmission Reverse Pressure Switch Circuit Malfunction
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P2810 Solenoid G Electrical
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0873 Transmission Pressure Switch Solenoid E Circuit High
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1096 J1850 (Class 2) IPC Controller State of Health Failure
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U0031 J1850 (Class 2) Serial Data Communication Link Low
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P1688 Unmanaged Engine Torque Delivered To TCM Signal
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: P1779 Engine Torque Delivered To TCM Signal
1000 & 2000 Gen 4 $50.00Rated 0 out of 5 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1041 J1850 (Class 2) ABS Controller State of Health Failure
1000 & 2000 Gen 4 $50.00Rated 0 out of 5
-
MANUAL SERVICE Deutz Combine 5650 H, 5660 HTS5670 H / HTS5680 H, 5690 HTS
DEUTZ $38.00Rated 0 out of 5 -
SERVICE MANUAL Carrie Starbird TDB/TDS-215 and Starbird PlusTDB/TDS-219
CARRIE $24.00Rated 0 out of 5