Software Updates for Certain Tier 4 Interim Industrial Engines {1920} Caterpillar

Industrial Engine

C13 (S/N: KWJ1-UP)

C15 (S/N: LDN1-UP)

C18 (S/N: BDN1-UP)

C9.3 (S/N: C9N1-UP; D9N1-UP)

Introduction

New engine software has been released to add new features and correct various issues in the current versions of engine software. The new part numbers and the related applications can be found below.

Do not perform any procedure in this Special Instruction until you read this information and you understand this information.

Required Parts

Table 1

Engine Model	New Engine Software Part Number	Former Engine Software Part Number	Effective Engine Serial numbers
C9.3	474-7530	366-8305, 442-8689, 423-6599, 420-4248, 395-1102, 385-1165, 378-7539, 373-3687, 366-5104, 360-6821, 366-8306	S/N:C9N01545-UP, ; S/N:D9N05421-UP
C9.3	454-3463	366-8309, 434-6396, 422-6161, 420-4249, 395-1103, 385-1166, 378-7542, 379-0975, 375-2376, 366-8310, 365-1589, 364-6433, 362-1195, 340-3618	S/N:C9N01545-UP, ; S/N:D9N05179-UP
C9.3 AG	474-8232	371-7704, 420-4254, 395-1105, 385-1159, 383-7685, 378-3619, 371-7705	See the note that follows Table 1.
C9.3 AG	473-1890	366-7960, 395-1104, 385-1160, 383-7676, 378-7530, 366-7961, 366-5963, 350-1812	See the note that follows Table 1.
C9.3 AG	474-8257	420-4251, 366-7963, 395-1106, 385-1163, 378-7532, 366-7964, 365-9494, 357-1717	See the note that follows Table 1.
C9.3 AG	473-1891	420-4253, 366-7987, 395-1107, 385-1164, 380-5959, 379-0972, 374-5912, 366-7988, 366-0438, 351-8341	See the note that follows Table 1.
C13	473-8919	366-7820, 442-8691, 419-6671, 366-3098, 362-0219, 359-8980, 349-1367, 378-7547, 377-9505, 373-3690	S/N:KWJ04389-UP
C13	474-8265	434-6956, 366-7822, 419-6212, 394-0321, 366-9532, 350-4444, 378-7548, 373-3689, 366-7823	S/N:KWJ04403-UP
C13 AG	475-0786	420-4243, 366-7943, 395-1110, 384-9983, 364-6745, 350-1816, 378-7544, 366-7944	See the note that follows Table 1.
C13 AG	475-0788	420-4244, 366-7941, 395-1111, 384-9981, 350-1814, 378-7545, 366-7942	See the note that follows Table 1.
C15	475-0793	366-7945, 420-4245, 395-1113, 378-7550, 366-7946	S/N:LDN01611-UP
C15	495-1581	475-0790, 366-7947, 452-1422, 419-6672, 395-1115, 366-9965, 366-5916, 340-3525, 378-7551, 373-6691, 366-7948	S/N:LDN01633-UP
C18	496-9957	472-8339, 375-8514, 419-6675, 394-0320, 381-4871, 375-8515	S/N:BDN02055-UP
C18	475-0794	374-5315, 437-1277, 419-6674, 395-1117, 380-5956, 374-5316	S/N:BDN02168-UP
C18	475-6064	372-8630, 435-2098, 419-6676, 397-5092, 384-9984, 380-8365, 380-8327, 372-8631, 428-9771	S/N:BDN02177-UP

Note: For C9.3 through C13 Agriculture Products use the Engine Technical Marketing Information (TMI) for further information related to software part numbers.

Changes Implemented in Flash File

Service Tool Requirement

Cat^® Electronic Technician (Cat ET) 2015C or newer required for this software release.

New Features

Low IMAP Shutdown

Low Intake Manifold Air Pressure (IMAP) Shutdown will be initiated if the boost pressure goes below −15 kPa (−2 psi). There will be an event for low IMAP. This feature will not be initiated unless the Charge Air Cooler (CAC) temperature is less than −10° C (14° F).

Intake Manifold Freeze Protection (IMFP) Speed Limit

If the engine is running in cold conditions with CAC temperature less than −18° C (−0.4° F) for 3 hours, the engine speed will be elevated to 1600 rpm and held at that speed for 20 minutes.

Note: This feature will be initiated only if pin "J1-46" is grounded.

ARD Nozzle Clean Out

Following regeneration, a small amount of fuel will be sprayed through the ARD nozzle to ensure that old fuel is not present in the nozzle during a heater cycle.

Active Regeneration Device (ARD) Rating Selection

There is a new configuration in Cat ET called "Diesel Particulate Filter #1 Active Regeneration Configuration Code" to select the correct ARD Control. This parameter is Factory Password Protected. Use Table 2 to select the correct ARD rating for the application.

Table 2

ARD Rating	Application Description
1	C9.3 through C13 Agriculture Products
2	N/A
3	N/A
4	All C9.3 through C18 Industrial (excluding C18 Air Compressor)
5	C18 Air Compressor

High-Speed Regeneration Minimum Engine Speed

The DPF Rating selection is configured in Cat ET, using "High Speed regeneration Minimum Engine Speed Configuration Code". Reference Engine News, SEBD9949, "New Cat® Electronic Technician (ET) Configuration Parameters Are Available for Tier 4 Industrial Engines" for more information.

Enhancements to Existing Features

Issue

The permanent lockout time was too short for the operator to initiate a service regeneration.

Resolution

Permanent lockout time was increased to allow the operator time to initiate a service regeneration.

Regeneration Lamp Installation

Installing "DPF/HEST/Inhibit" lamps using Cat ET is no longer required. Lamps are installed by default.

Note: When using Cat ET 2014B and older versions, the installation option for these lamps will show as "unavailable". An error code will activate if older software is programmed over the new software.

Defect Fixes

HSLID Rolling Shutdown Interval and Speed Limit Change

Issue

The rolling shutdown timer was too short for a technician to start a service regeneration.

Resolution

The rolling shutdown timer has been increased as well as the speed limit has been increased from 1500 rpm to 1600 rpm. This change allows more time for the technician to start a service regeneration and higher rpm to compensate for cold ambient conditions.

Secondary Air Pressure Sensor (Out of Calibration) Diagnostics

Issue

There have been false occurrences of the 3493-13 Aftertreatment #1 diagnostic code.

Resolution

The code trip conditions have been updated to only trip for valid regeneration failures.

Spark Disabled During Post Regeneration

Issue

Customers have noticed a popping noise during the post regeneration main fuel spray.

Resolution

Spark has been disabled during the post regeneration main fuel spray.

ARD Fuel Pressure Voltage Below Normal

Issue

A false code trip has been experienced in cold ambient conditions.

Resolution

Conditions for sensor have been updated to fix the false trip.

High Exhaust System Temperature (HEST) Fail to Ignite Lamp

Issue

The HEST lamp goes off and on during a fail to ignite condition.

Resolution

The HEST Lamp will remain on during fail to ignite conditions and will turn off only after a regeneration shutdown.

Regeneration During a Key Switch Event

Issue

Regenerations were continued during a Delayed Engine Shutdown (DES)

Resolution

Software added a feature for a key switch event to stop regeneration during a Delayed Engine Shutdown (DES).

DPF Inlet Temperature Warning

Issue

During regeneration, certain operating conditions can cause the DPF inlet temperature to exceed the desired set time threshold and trip an E1008 (1) High DPF #1 Intake Temperature event code. The event code is accompanied by the amber warning light and a pop-up message on the display. These issues can create operator confusion and unnecessary downtime.

Resolution

The event code will continue to log in Cat ET, but the operator notifications will be suppressed to eliminate operator concern and confusion.

ARD Intake Pressure Substitution

Issue

The software can incorrectly activate the ARD intake pressure substitution strategy when the sensor is faulted. When substitution is active, high-speed regenerations are disabled. This condition reduces available regeneration opportunities when a regeneration is required.

Resolution

An ambient temperature check is included to ensure that the substitution strategy is only active in cold ambient conditions. If this condition is detected, the ARD intake pressure sensor measurement will be substituted with estimated turbocharger compressor outlet pressure. When the substitution is active, high-speed regenerations will be disabled but low speed regenerations can still occur. If the substitution is NOT active and the sensor is faulted, all regenerations (high and low speed) will be disabled until the sensor issue is corrected.

Aftertreatment Fuel Pressure Event

Issue

Various causes, such as high temperatures in the fuel lines, can falsely trip E1050 (2) High Aftertreatment #1 Fuel Pressure #1 and E1051 (2) High Aftertreatment #1 Fuel Pressure #2 event codes. This condition causes future regenerations to be disabled by the event codes.

Resolution

Diagnostic thresholds have been recalibrated to prevent false tripping of these event codes.

Cat ET Nozzle Heater Override

Issue

The Cat ET Nozzle Heater override will not function if a regeneration is being desired by the software.

Resolution

The Cat ET Nozzle Heater override will now give nozzle heater cycles higher priority than regenerations for the first 50 percent of the cycle.

Issue

If the Cat ET Nozzle Heater override is not turned off prior to the completion of the heating cycle, automatic and forced regenerations are disabled for the remainder of the key cycle.

Resolution

Regenerations will now be allowed without a key cycle once the service test has completed.

Software ID Information

Issue

To aid dealer technicians in selecting the correct flash files for each, it was requested to provide software naming which would be displayed on all end-user systems through SIS Web and Cat ET.

Resolution

Support was added for flash file naming for FL2 files, with the software name matching in SIS Web and Cat ET to aid in selecting the correct flash file.

EGR Differential Sensor

Issue

At ambient temperatures below −13° C (8.6° F), engines can log a E1093(1) Low EGR Differential Pressure event code, potentially due to the differential pressure sensor freezing and not having sufficient time to thaw.

Resolution

The cold mode strategy has been updated to include more time to allow a potentially frozen sensor time to thaw.

ARD Spark Control

Issue

Simultaneous operation of the ARD spark plug and ramp up of nozzle heater current can lead to ineffective nozzle heater operation.

Resolution

The spark plug is now disabled as the nozzle heater current ramps up.

ARD Fuel Line Air Purge (FLAP)

Issue

Air trapped in the ARD fuel supply lines after initial assembly or following field service can cause E1052 (2) Low Aftertreatment #1 Fuel Pressure #1 and E1053 (2) Low Aftertreatment #1 Fuel Pressure #2 event codes.

Resolution

The ARD fuel line air purge service test is now available to prime the aftertreatment fuel system, removing any trapped air. The new service test should be run prior to running the ARD ignition test after initial assembly or after any field service involving the aftertreatment fuel system.

Note: If ARD fuel pressure sensor or actuator diagnostic faults are present, the test will be aborted.

Additional Information

PMI – Auto Fuel Issue

In Cat ET, if "Auto Fuel" is selected as one of the Programmable Maintenance Indicator Modes, the "Auto Fuel" mode will not be applied until power cycle.

Reversing Fan at Zero Engine Speed

If the fan and the reversing fan are enabled at zero engine speed, the reversing fan parameters on the Cat ET status screen will show "disabled" or "not installed" until the engine speed is increased beyond 0 rpm.

Reversing fan

If the "Reversing Fan" feature is disabled and enabled after changing the purge interval time within the same key cycle, the interval that takes effect is the last programmed value and not the newly programmed value. After the purge is complete, the new value takes effect.