0303591 JOHNSON SCREW

Table 1
J1939 Code and Description CDL Code and Description Comments
3361-5
Aftertreatment #1 DEF Dosing Unit : Current Below Normal 3821-5
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Current Below Normal This code indicates that there is a problem with the DEF dosing valve actuator.
3361-6
Aftertreatment #1 DEF Dosing Unit : Current Above Normal 3821-6
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Current Above Normal This code indicates that there is a problem with the DEF dosing valve actuator.
3363-5
Aftertreatment #1 DEF Tank Heater : Current Below Normal 3126-5
Aftertreatment #1 DEF Tank Heater #1 : Current Below Normal This code indicates that there is a problem with the DEF tank heater.
3363-6
Aftertreatment #1 DEF Tank Heater : Current Above Normal 3126-6
Aftertreatment #1 DEF Tank Heater #1 : Current Above Normal This code indicates that there is a problem with the DEF tank heater.
3479-5
Aftertreatment #1 Fuel Pressure Control : Current Below Normal 2461-5
ARD Fuel Pressure #1 Control : Current Below Normal This code indicates that there is a problem with the ARD fuel pressure.
3479-6
Aftertreatment #1 Fuel Pressure Control : Current Above Normal 2461-6
ARD Fuel Pressure #1 Control : Current Above Normal This code indicates that there is a problem with the ARD fuel pressure.
4301-5
Aftertreatment #1 Fuel Injector #1 Heater Control : Current Below Normal 3182-5
Aftertreatment #1 Fuel Injector #1 Heater : Current Below Normal There is low current flow between the SMART relay (data link type) and the heating element.
The most likely cause of this code is an open circuit in the wiring between the SMART relay (data link type). There may be a problem with a connector.
4301-6
Aftertreatment #1 Fuel Injector #1 Heater Control : Current Above Normal 3182-6
Aftertreatment #1 Fuel Injector #1 Heater : Current Above Normal There is excessive current flow between the SMART relay (data link type) and the heating element.
The most likely cause of this code is a short circuit in the wiring between SMART relay (data link type) and the heating element. There may be a problem with a connector.
4354-5
Aftertreatment #1 DEF Line Heater #1 : Current Below Normal 3110-5
Aftertreatment #1 DEF Line Heater #1 : Current Below Normal This code indicates that there is a problem with the DEF backflow/return line heater.
4354-6
Aftertreatment #1 DEF Line Heater #1 : Current Above Normal 3110-6
Aftertreatment #1 DEF Line Heater #1 : Current Above Normal This code indicates that there is a problem with the DEF backflow/return line heater.
4355-5
Aftertreatment #1 DEF Line Heater #2 : Current Below Normal 3111-5
Aftertreatment #1 DEF Line Heater #2 : Current Below Normal This code indicates that there is a problem with the DEF backflow/return line heater.
4355-6
Aftertreatment #1 DEF Line Heater #2 : Current Above Normal 3111-6
Aftertreatment #1 DEF Line Heater #2 : Current Above Normal This code indicates that there is a problem with the DEF backflow/return line heater.
4356-5
Aftertreatment #1 DEF Line Heater #3 : Current Below Normal 3112-5
Aftertreatment #1 DEF Line Heater #3 : Current Below Normal This code indicates that there is a problem with the DEF backflow/return line heater.
4356-6
Aftertreatment #1 DEF Line Heater #3 : Current Above Normal 3112-6
Aftertreatment #1 DEF Line Heater #3 : Current Above Normal This code indicates that there is a problem with the DEF backflow/return line heater.
5423-5
Aftertreatment #1 Fuel Pump Relay Control : Current Below Normal 3427-5
Aftertreatment Fuel Pump Relay : Current Below Normal This code indicates that there is problem with the relay and/or circuit for the ARD electric fuel pump.
5423-6
Aftertreatment #1 Fuel Pump Relay Control : Current Above Normal 3427-6
Aftertreatment Fuel Pump Relay : Current Above Normal This code indicates that there is problem with the relay and/or circuit for the ARD electric fuel pump.
5424-5
Aftertreatment #1 Fuel Flow Diverter Valve Control : Current Below Normal 3413-5
ARD Fuel Flow Diverter Actuator : Current Below Normal This code indicates that there is a problem with the solenoid on the diverter valve and/or the electrical circuit on the ARD electric fuel pump.
5424-6
Aftertreatment #1 Fuel Flow Diverter Valve Control : Current Above Normal 3413-6
ARD Fuel Flow Diverter Actuator : Current Above Normal This code indicates that there is a problem with the solenoid on the diverter valve and/or the electrical circuit on the ARD electric fuel pump.
5425-5
Aftertreatment #1 Fuel Pressure #2 Actuator Control : Current Below Normal 3391-5
ARD Fuel Pressure #2 Control Actuator : Current Below Normal This code indicates that there is a problem with the main fuel solenoid and/or electrical circuit on the ECM.
5425-6
Aftertreatment #1 Fuel Pressure #2 Actuator Control : Current Above Normal 3391-6
ARD Fuel Pressure #2 Control Actuator : Current Above Normal This code indicates that there is a problem with the main fuel solenoid and/or electrical circuit on the ECM.
Table 2
Component Electrical Checkout
DEF Injector Aftertreatment #1 DEF Doser Valve #1 Override: Initiate the "Aftertreatment #1 DEF Doser Valve #1 Override" through Cat® Electronic Technician (ET) to activate the DEF injector circuit.
DEF Line Heaters DEF Line Heater Test: Initiate the "DEF Line Heater Test" through Cat ET to activate the DEF line heater circuits. Review active diagnostic codes to determine if a code is present.
Note: There is a SMART relay (data link type) that the ECM control's via the data link to supply power to the DEF line heaters.
DEF Tank Heater Valve Aftertreatment #1 DEF Tank Heater #1 Override: Turn the keyswitch to the ON. Initiate the "Aftertreatment #1 DEF Tank Heater #1 Override" through Cat ET to activate the coolant diverter valve circuit.
Fuel Diverter Valve ARD Fuel Flow Diverter Actuator Override Use the "ARD Fuel Flow Diverter Actuator Override"in the override parameters section in Cat ET to activate the fuel diverter valve on the ARD fuel pump. Review active diagnostic codes to determine what code is present.
Main Control Solenoid ARD Ignition Test: Complete an ARD ignition test through Cat ET as a final verification of the repair. This circuit is continuously monitored in T4F software and does