VALVE GP-CHECK & RELIEF 3350405 - Caterpillar

Resolution
A post regeneration pressure check has been added to prevent false trips due to this trapped pressure.Issue
If certain fault codes relating to the Selective Catalyst Reduction (SCR) system are active while troubleshooting, they would unlikely be able to meet the required reset conditions. This creates a need for the technician to acquire factory passwords. This applies to the following codes that are listed in Table 4.
Table 4
J1939 Code and Description     CDL Code and Description    
4354-6:Aftertreatment 1 Diesel Exhaust Fluid Line Heater 1: urrent Above Normal     3110-6:Aftertreatment #1 SCR Catalyst Reagent Line Heater #1:Current Above Normal    
4355-6:Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2:Current Above Normal     3111-6:Aftertreatment #1 SCR Catalyst Reagent Line Heater #2:Current Above Normal    
4356-6:Aftertreatment 1 Diesel Exhaust Fluid Line Heater:Current Above Normal     3112-6:Aftertreatment #1 SCR Catalyst Reagent Line Heater #3:Current Above Normal    
4374-5:Aftertreatment #1 Diesel Exhaust Fluid Line Heater 3:Current Above Normal     3118-5:Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor:Current Below Normal    
4374-6:Aftertreatment #1 Diesel Exhaust Fluid Pump Motor Speed:Current Above Normal     3118-6:Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor :Current Above Normal    
4374-8:Aftertreatment #1 Diesel Exhaust Fluid Pump Motor Speed:Abnormal Frequency, Pulse Width, or Period     3118-8:Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor :Abnormal Frequency, Pulse Width, or Period    
3361-5:Catalyst Dosing Unit:Current Above Normal     3821-5:Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor :Abnormal Frequency, Pulse Width, or Period    
3361-6:Catalyst Dosing Unit:Current Above Normal     3821-6:Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator :Current Above Normal    Resolution
The software was updated so that if an SCR service test was being performed, the active codes would clear and re-trip during troubleshooting if the fault has not been repaired.Issue
If certain event codes relating to the SCR system are active while a technician is attempting troubleshooting, the Aftertreatment System Functional Test (ASFT) will be prevented from running. This applies to event codes that are listed in Table 5.
Table 5
J1939 Code and Description     CDL Code and Description    
5798-7:Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Heater Temperature : Not Responding Properly     E1427 (1)Aftertreatment #1 SCR Dosing Pump Temperature Not Responding    
3031-18: Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : Low - moderate severity (2)     E1398 (2)Low Aftertreatment #1 SCR Catalyst Reagent Tank #1 Temperature    Resolution
The ASFT will be allowed to run while these event codes are active.Issue
The current inducement software does not trigger the required action of immediate level 3 inducement action for the following conditions
Table 6 or Table 7 and Table 8 or Table 9
Table 6 or Table 7 and Table 10
Table 6 or Table 7 and Table 11
Table 6
J1939 Code and Description     CDL Code and Description    
1761-3:Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Voltage Above Normal:     3130-3:Aftertreatment #1 SCR Catalyst Reagent Tank #1 Level Sensor : Voltage Above Normal    
Table 7
J1939 Code and Description     CDL Code and Description    
1761-4:Aftertreatment 1 Diesel Exhaust Fluid Tank Level :