CAN J1939 SPN list?
The Suspect Parameter Number (SPN) is diagnostic fault code terminology found on some Caterpillar ® products using a J1939 CAN data link….Suspect Parameter Numbers (SPN) on J1939 data link.
| SPN Code | Description |
|---|---|
| 109 | Engine Coolant Pressure |
| 110 | Engine Coolant Temperature |
| 111 | Engine Coolant Level |
| 112 | Engine Coolant Filter Differential Pressure |
What is SPN code?
Military Separation Program Numbers (SPN Codes) define the reason a discharge or separation was granted. SPN Codes were replaced by alpha-numeric separation codes but can still be found on many older DD-214s.
How do you list on Supernatural?
To view a list of the SPNs that a computer has registered with Active Directory from a command prompt, use the setspn –l hostname command, where hostname is the actual host name of the computer object that you want to query.
What is PDU specific?
Specific, Data Page and Extended Data Page are used for identification of the corresponding Parameter Group. On global PGNs the PDU Format is 240 or greater and the PDU Specific field is a Group Extension. • Specific PGNs are for parameter groups that are sent to particular devices (peer-to-peer).
What is code SPN 4364?
SPN 4364/FMI 1. Description. This fault code sets when the Aftertreatment Control Module (ACM) detects that the NOx conversion is lower than a calibrated threshold. Monitored Parameter.
Why is there a 29 bit identifier?
Since the 11 (or 29 for CAN 2.0B) bit identifier is transmitted by all nodes at the start of the CAN frame, the node with the lowest identifier transmits more zeros at the start of the frame, and that is the node that wins the arbitration or has the highest priority.
What does FMI 7 mean?
Not Responding Properly
7. Not Responding Properly. 8. Abnormal Frequency, Pulse Width, or Period.
What does SCR closed loop mean?
Closed loop control strategies use a sensor to provide feedback and are thus able to adjust urea dosing to more accurately reflect operating conditions and to account for long term drift. Many closed loop dosing systems use the signal from a NOx sensor after the SCR catalyst.
What is a good NOx conversion efficiency?
A level of about 90% NOx conversion is required to meet the standards. Technologies that have the most potential to achieve very high NOx conversion at low temperatures of diesel exhaust are lean NOx traps (LNTs) and Selective Catalytic Reduction (SCR) of NOx using aqueous urea, typically known as Urea SCR.
What is the difference between 11 bit and 29 bit identifier?
An 11-bit identifier (standard format) allows a total of 211 (= 2048) different messages. A 29-bit identifier (extended format) allows a total of 229 (= 536+ million) messages. Note: Both formats, Standard (11-bit message ID) and Extended (29-bit message ID) may co-exist on the same CAN bus.
What is ammonia to NOx ratio?
In a practical SCR system, ammonia is typically injected to produce a NH3/NOx molar ratio of 1.05–1.1 to achieve a NOx conversion of 80–90% with an ammo- nia slip of about 10 ppm of unreacted ammonia in gases leaving the reactor.
What are normal NOx sensor readings?
With no DEF doser operation both inlet and outlet should read close to each other. When the injector is activated outlet nox should drop at least 70%. Normally under steady cruise the nox sensor on a duramax or ISB cummins is around 200-300 ppm.