- Articulated Truck
- 725C (S/N: TFB1-UP)
- Excavator
- 336F (S/N: B391-UP; TZA1-UP; RKB1-UP; RBC1-UP; KGH1-UP; ZBJ1-UP; LCL1-UP; SSN1-UP; LTP1-UP; KFT1-UP; MTW1-UP; DFY1-UP; WTZ1-UP)
- 340F (S/N: YBF1-UP; EAR1-UP)
- Motor Grader
- 12M Series 3 (S/N: N9B1-UP; N9F1-UP; N9P1-UP; N9R1-UP)
- 140M Series 3 (S/N: N9D1-UP; N9G1-UP; N9J1-UP; N9M1-UP)
- 160M Series 3 (S/N: N9E1-UP; N9K1-UP; N9L1-UP; N9T1-UP)
- 140M Series 3 (S/N: N9D1-UP; N9G1-UP; N9J1-UP; N9M1-UP)
- OEM Mobile Hydraulic Power Unit
- 336FMHPU (S/N: B341-UP)
- Track-Type Tractor
- D6T (S/N: CR31-UP; CG81-UP; SGA1-UP; RAD1-UP; STE1-UP; MEL1-UP; WRN1-UP; KMR1-UP; WES1-UP; SGT1-UP; TMY1-UP; HTZ1-UP)
- D7E (S/N: HKA1-UP; SSH1-UP)
- Wheel Loader
- 966M (S/N: DYC1-UP; KJP1-UP)
- 966M Series XE (S/N: P6C1-UP)
- 972M (S/N: JPR1-UP)
- 972M Series XE (S/N: EDW1-UP)
- 966M Series XE (S/N: P6C1-UP)
- Wheel Tractor
- 631K (S/N: WTW1-UP)
- Wheel Tractor Scraper
- 621K (S/N: WTA1-UP)
- 627K (S/N: WTC1-UP)
- 637K (S/N: WTS1-UP)
- 627K (S/N: WTC1-UP)
Introduction
New engine software has been released to add new features and correct several issues in the current versions of the engine software. The new numbers and former numbers can be found below.
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.
Required Parts
| Machine Model | New Machine Software Part Number | Former Machine Software Part Number |
|---|---|---|
| 12M3 | ||
| 140M3 | ||
| 160M3 | ||
| D6T | ||
| D7E | ||
| PL72 | ||
| 336F | ||
| 725C AT | ||
| 966M | ||
| 966L CVT (XE) | ||
| 972M | ||
| 621K (C9 only)
627K (C9 only) 631K (C9 only) 637K (C9 only) |
This change is effective with serial number S/N:SYE10820.
Changes Implemented In The Flash File
Service Tool Requirement
ET2015C or later required for this software release.
SCR (Selective Catalyst Reduction)
If there are emergency situations, EPA allows the override of SCR Inducements. This feature can be enabled through the service tool. Once enabled (factory password required), this feature provides 120 hours of inducement free operation. The override timer can be activated with either a physical switch (J1-22 on A5E2) or ET service tool.
CRS Lean Burn Strategy
Lean burn strategy has been added to startup mode (SM) and maintenance timer (MTB) regens. This reduces the potential of regen issues to a sooted up flame temp sensor.
Enhancements To Existing Features
Eliminate Key Off Cycle -7 False Trip
Issue
-7 is not persistent active during key cycle.
Resolution
Make injector not responding code persistent active over key cycle for better troubleshooting.
Issue
-7 code is tripped excessively and causes dealers to replace injectors when the error code is found.
Resolution
Improved sensitivity to the -7 code to reduce false trip and unnecessary injector changes.
Issue
-499 code is false tripping. This drives replacement of the high-pressure pump. High volume of returned pumps is showing no fault found.
Resolution
Changed sensitivity and severity for the diagnostic code E499 to eliminate false trips.
New Training Material For The Troubleshooting Procedure & FSFT Video
For access to the video, you can scan the QR code below with a QR enabled device or copy the link below.
This video is a demonstration of the Cat ET procedure for FSFT troubleshooting.
| |
| Illustration 1 | g06015918 |
SCR Inducement Faults Snapshot
Issue
Operator unable to use tool for troubleshooting.
Resolution
Removed snapshot support for SCR inducement faults.
Issue
DEF quality sensor unable to detect degraded concentration under certain conditions.
Resolution
Timer was changed to meet the sampling requirements.
Active Regeneration Device (ARD) Nozzle Heater Diagnostic
Issue
Code 3182-4 Aftertreatment #1 Fuel Injector #1 Heater : Voltage Below Normal clears on key cycle and does not remain an active diagnostic for troubleshooting issue.
Resolution
Changed code to be persistent active when tripped for better troubleshooting.
Display Names Data Health Monitor
Issue
ECM #1 and ECM #2 is being displayed and causing confusion during troubleshooting.
Resolution
Updated ECM columns to read device ID's.
Issue
During hot shutdown, event drives level three code is causing a factory password to clear. The results from the level three code causes long down time for customers.
Resolution
Changed Hot Shutdown under certain circumstance to be a level 1 which requires no factory passwords.
High DEF Pressure Fault During Prime
Issue
False tripping code 4334-16 Aftertreatment #1 DEF #1 Pressure (absolute) : High - moderate severity (2) during prime.
Resolution
Updated to eliminate false trips.
DEF Tank & Coolant Temperature Kick Out
Issue
During aftertreatment function test immediately aborts if conditions are not met.
Resolution
Changed initiate requirements to allow preconditions of coolant temperature to meet the DEF conditions. If DEF conditions do not meet the aftertreatment function, the test will abort.
AVSpare Regeneration System (CRS) Nozzle Heater
Issue
CRS nozzle heater shortens the cycle was causing heater nozzle plugging.
Resolution
CRS nozzle heater timer resets and timer durations have been updated to correct this issue.
Issue
Popping sound is noticed during post regeneration main fuel spritz.
Resolution
Spark has been disabled during main fuel spritz action.
Issue
Forced MTB regenerations with auto regeneration capability disabled on application are unable to reset the regeneration trigger request. This is leading subsequent regeneration request without trigger getting reset. This can lead to operator confusion in the field.
Resolution
Logic updated to go from MTB to Non-MTB at the end of the regeneration, which will allow reset.
Low Battery Voltage Diagnostic
Issue
False trip battery diagnostic during operator forced shutdown. This creates derate without active fault code.
Resolution
Diagnostic was improved to reduce false tripping and derate issue.
DPF #1 Intake Pressure Sensor Out of Calibration
Issue
False trip code 3464-13 under cold ambient temperature.
Resolution
Changed minimum DPF inlet temperature condition set point for DPF Intake Pressure Sensor Code 3465-13.
SCR Inducement Def Control Unit Faults
Issue
DCU faults were considered tampering faults which caused downtime and loss of productivity.
Resolution
DCU faults have been categorized into tampering and no-tampering. This new change will trigger final inducement in 20 hours and is applicable for EPA regulations.
NOx Sensor J1939 Datalink Faults
Issue
Logged 5856-9 SAE J1939 Data Link #3: Abnormal Update Rate being logged.
Resolution
Changed ECM request for NOx sensor reading to match J1939 requests.
Fuel Pressure Sensor False Trip
Issue
During sudden engine speed drops or key cycles the after fuel filter pressure sensor experiences momentary vacuum that created a false trip of 460-21 code.
Resolution
Debounce time was extended to allow sensor recover.
Issue
Level 1 low fuel pressure events are unavailable for DOC protection.
Resolution
Added Level 1 low fuel pressure event.
Issue
False during on Low EGR delta P.
Resolution
Improved diagnostics for EGR absolute pressure sensor and EGR differential pressure sensor.
EGR (ABS) & (DP) Sensor out of Calibration
Issue
EGR Absolute (ABS) and EGR Differential Pressure false tripping in cold ambient conditions.
Resolution
Changed minimum conditions at cold ambient and zero engine speed to reduce false tripping.
Issue
Level 1 Coolant Temperature event comes up when EGR protection derates occur.
Resolution
Separated EGR derates from PMS level 1 trip point. EGR derate of 20% is applied if coolant temperature increase to