1995/01/01 Caterpillar

3176B (9CK1-Up),
3406E (5EK1-Up) Truck Engines

The following is a list of new features and changes for the latest personality module release on 3176B/3406E Truck Engines. The personality module can be identified by Release Date "JAN95" using a Caterpillar Service Tool. The ECAP Service Program Module (SPM) NEXG4522, Version 1.5 must be used to program the new parameters or use the new Interactive Diagnostic tests. A list of the JAN95 service personality modules and FLASH files can be obtained using the Caterpillar FIND system (Search Document Types: FLASH; Keyword: 3176B <OR>3406E). The JAN95 personality module is factory installed on truck engines effective with 3176B (9CK17704) and 3406E (5EK38704). When updating an older engine with the JAN95 personality module, explain to the customer the benefit of the new features and changes. This explanation will allow the customer to make the correct programming choices for their particular operation.

New Features

1. "Auto Retarder In Cruise" provides the option to have the engine brake come on automatically while in cruise control, once the vehicle speed exceeds the cruise control set speed. It maintains a more constant vehicle speed over rolling terrain. The feature is turned on by programming the MPH above the cruise set speed when the engine retarder begins. As an example, if the Engine Retarder parameter is programmed to 5 MPH, Low Level retarding begins 5 MPH above the cruise set speed, Medium Level retarding begins 7 MPH above the cruise set speed, and High Level Retarding begins 9 MPH above the cruise set speed. This feature allows the driver to use the Retarder Level switches to determine the maximum level of automatic retarding.

New Customer Parameter (Cruise Control Parameters):

* "Auto Retarder in Cruise (0=Off)" Default = 0

2. "Theft Deterrent with Caterpillar Information Display (Cat ID)" provides the option to disable engine starting until a Theft Deterrent Password is entered through Cat ID. Existing Cat ID's can get this feature by installing a new Cat ID personality module which will be available in early 1995.

New Customer Parameters (Trip Parameters):

* "Theft Deterrent" Default = NO

* "Theft Deterrent Password" Default = 0000

3. "Dedicated PTO" greatly enhances the ability to provide specialized PTO functions such as remote station engine speed control and dual throttle operation. A Torque Limit is available to help protect sensitive PTO equipment from damage. Detailed PTO applications and programming guidelines will be included in a Special Instructions publication that will be available in early 1995.

New Customer Parameters (Dedicated PTO Parameters):

* "PTO Configuration" Default = OFF

* "PTO Top Engine Limit" Default = 2120 RPM

* "PTO Engine RPM Set Speed" Default = 0 RPM

* "PTO to Set Speed" Default = NO

* "PTO Cab Throttle RPM Limit" Default = TEL

* "PTO Activates Cooling Fan" Default = NORMAL

* "Torque Limit" Default = 2000 FTLB

4. "Idle / PTO Bump RPM" has been added to allow the customer to program the amount of RPM increase or decrease each time the accel/decel switch is "bumped". This parameter controls RPM in the Idle and Dedicated PTO modes.

New Customer Parameter [Idle Parameters (Old PTO)]:

* "Idle / PTO Bump RPM" Default = 20 RPM

5. "Customer Parameter Lockout" has been added to prevent unauthorized changes to the following customer parameters:

* Vehicle Speed Limit,

* High Cruise Limit,

* VSL Protection,

* Vehicle Speed Calibration,

* Soft Vehicle Speed Limit,

* Top Engine Limit,

* A/C Fan On Time

Once these parameters are LOCKED, Factory Level passwords are required to UNLOCK/change the parameters.

New Menu Option:

* "Customer Parameter Lockout" located on "Read/Change Parameters" Screen.

6. "Custom Data Occurrences" provides the flexibility to count the number times that a variety of engine or vehicle operating conditions occur. As an example, Custom Data can be programmed to count the number of times the driver applies the service brake when vehicle speed is above 65 MPH to explain why a particular truck has high brake wear.

7. "Idle Shutdown" has been changed to eliminate the parking brake switch requirement. The Idle Shutdown timer begins counting as soon as vehicle speed is zero and the engine load is below a predetermined limit.

8. "Transmission Style" has been added to allow a truck with an automatic transmission to have two service brake switch inputs to kick out of cruise control, extended idle, or PTO modes. This new customer parameter (Engine/Gear Parameters) has the following three choices:

* MANUAL (Default) - This is the standard option using 1 clutch input and 1 service brake input.

* AUTO W/ 2 BRAKE SW- This option uses 2 service brake inputs. The 2nd service brake input uses the standard clutch input.

* AUTO W/O 2 BRAKE SW - This option uses the standard service brake input only. The standard clutch input is ignored.

Diagnostic and Service Improvements

1. "Automatic Boost Sensor Calibration" calibrates the boost sensor every time the engine is started. This eliminates the need to calibrate the boost sensor with Service Tools.

2. "Injector Solenoid Test" provides the ability to turn on each injector solenoid with the engine off. This test verifies each injector is receiving an electrical signal and assists with troubleshooting injector electrical problems.

New Menu Option:

* "Injector Solenoid Test" located in the "Interactive Diagnostics" menu.

3. Automated Cylinder Cutout Test provides an automated method of cutting out cylinders during troubleshooting.

NOTE: Engine operating conditions must be stabilized and kept constant during this test for accurate results.

This test cuts each cylinder out one at a time and displays an average "Fuel Pos" number for each cylinder. To start the Automated Cylinder Cutout Test press "Space Bar" while in the normal Cylinder Cutout screen.

4. For Multi-torque ratings, the Service Tool now displays the high torque test specification instead of the lower torque test specification.

5. "Powertrain Data Link" parameter provides the ability to permanently disable the Powertrain Data Link and diagnostic code (249-11). If an engine has an active 249-11 diagnostic code, the Power Train Data Link should be disabled after verifying no OEM systems are connected to the power train data link.

New Customer Parameter (Data Link Parameters):

* "Powertrain Data Link" Default = J1922

6. To reduce intermittent electrical problems that do not affect engine performance, the Check Engine Light will come on after the following fault codes have been active for one hour continuously:

* Fuel Temperature Sensor Open/Short circuit (174-03 and 174-04),

* Intake Air Temperature Sensor Open/Short circuit (105-03 and 105-04),

* Oil Pressure Sensor Open/Short circuit (100-03 and 100-04),

* Coolant Level Sensor (111-02).

The one hour lamp delay increases the likelihood that if an engine has a noticeable electrical problem there will be an active fault code when the truck gets to the service shop; making the symptom easier to troubleshoot.

7. The A/C High Pressure Switch Diagnostic Code (228-03) has been eliminated to eliminate false logging of this code. If a truck is logging this code and the A/C system and cooling fan are functioning properly, the personality module should be updated instead of replacing the A/C pressure switch.

Other Changes:

1. The ECAP "Read/Change Customer Specified Parameters" screen now lists all parameters in a single list. These customer parameters are read and changed directly on the this screen. Since the list is long, the function of "right arrow (>)" and "left arrow (<)" allow you to jump to the next/previous major parameter category.

2. Multi-Function switch inputs (Multi-Func In#1, Multi-Func In#2, Multi-Func In#3) are displayed on the Service Tool Status screen. These switch inputs are only used if the "Dedicated PTO" functions are enabled and the truck chassis has the additional required wiring. Multi-Func In#1 (P1 pin 8) is the same input as the parking brake switch input used with older personality modules.

3. The Service Tool now lists separate Service Tool serial numbers for the "Last Service tool to change customer parameters" and the "Last Service tool to change system parameters".

4. Many Customer Specified Parameters now have "YES" and "NO" choices to better define the actual selection. The new "YES"//bq/NO/eq/ terminology is used instead of the previous "ENABLE" and "DISABLE" choices.

5. The following name changes were made to Customer Specified Parameters to better define the actual function.