2000/11/13 Caterpillar

Articulated Truck:

D250X (S/N: AFX1-UP)

D300X (S/N: AGF1-UP)

D350ESeries II (S/N: 2XW1-UP)

D350E (S/N: 9LR1-UP)

D400ESeries II (S/N: 8PS1-UP; APF1-UP)

D400E (S/N: 2YR1-UP)

Cold Planer:

PM-565B (S/N: 8GS1-UP)

Combine:

LEXION 480 COMBINE (S/N: 2BZ1-UP)

LEXION 485 COMBINE (S/N: 8ZW1-UP)

Landfill Compactor:

836G (S/N: 7MZ1-UP)

Excavator:

345BSeries II (S/N: ALB1-UP)

345B L (S/N: 2NW1-UP)

345B (S/N: 2ZW1-UP)

345B L (S/N: 3MW1-UP)

345B (S/N: 4SS1-UP)

345B L (S/N: 4SW1-UP; 5WS1-UP)

345B (S/N: 6MW1-UP; 6XS1-UP; 7KS1-UP; 8KW1-UP; 8RW1-UP; 9CW1-UP)

345B L (S/N: 9GS1-UP)

345BSeries II (S/N: APB1-UP)

365B L (S/N: 4XZ1-UP)

365B (S/N: 9PZ1-UP; AGD1-UP)

365BL (S/N: 9TZ1-UP)

385B L (S/N: ANS1-UP)

385B (S/N: BKF1-UP)

5110B (S/N: AAA1-UP)

5130 (S/N: 5ZL1-UP)

5130B (S/N: 4CS1-UP)

W345BSeries II (S/N: ANJ1-UP)

Off-Highway Truck/Tractor:

69D (S/N: 9SS1-UP; 9XS1-UP)

73D (S/N: 1GW1-UP; 9YS1-UP)

769D (S/N: 5SS1-UP; 5TR1-UP)

773D (S/N: 7ER1-UP)

776D (S/N: 5ER1-UP; AFS1-UP)

777D (S/N: AGC1-UP)

777D HAA (S/N: AGY1-UP)

785C HAA (S/N: 5AZ1-UP)

789C (S/N: 2BW1-UP)

793C (S/N: 4AR1-UP; 4GZ1-UP; ATY1-UP)

797 (S/N: 5YW1-UP)

Quarry Truck:

771D (S/N: 6YS1-UP)

775D (S/N: 6KR1-UP; 8AS1-UP)

Track-Type Tractor:

D10R (S/N: 3KR1-UP)

D11R (S/N: 7PZ1-UP; AAF1-UP)

D8R (S/N: 6YZ1-UP)

D9R (S/N: 7TL1-UP)

Underground Articulated Truck:

AE40 II (S/N: 1ZZ1-UP)

Wheel Loader:

988FSeries II (S/N: 2ZR1-UP)

988G (S/N: 2TW1-UP)

990Series II (S/N: 4FR1-UP)

992G (S/N: 7HR1-UP; ADZ1-UP)

994D (S/N: 3TZ1-UP)

Wheel Tractor:

834G (S/N: 6GZ1-UP)

Wheel Tractor-Scraper:

631E (S/N: 1AB1-UP)

651E (S/N: 4YR1-UP)

657E (S/N: 5YR1-UP; 6TR1-UP)

Service Magazine SEPD0550, 13 November 2000, "Operational Requirements Needed to Use Dyno Mode Tool in Caterpillar Electronic Technician". Disregard this article. Refer to the article that follows.

This document describes the operational requirements that are needed in order to use the Dyno Mode Tool. The Dyno Mode Tool is a part of Caterpillar Electronic Technician (Cat ET). When the Dyno Mode Tool is used, the user can override parameters. The user can also view different status parameters. This tool is used when a dyno test is performed on an engine. The Dyno Mode Tool can be used on the following engines:

• 3126 Engines

• 3176 Engines

• 3196 Engines

• 3400 Engines

• 3500B Engines

• All Caterpillar electronic machine engines

Perform the following steps in order to enter Dyno Mode.

1. Use Cat ET in order to select the drop-down menu that is labelled "Service".

2. Select the "Service Procedures" submenu.

3. Select "Dyno Mode".

Once the user selects "Dyno Mode", Cat ET will verify that there is only one Electronic Control Module (ECM) on the data link. If Cat ET determines that there is more than one ECM available, a communication dialog box is displayed. Refer to Illustration 1.

Illustration 1	g00745237

This communication dialog box informs the user that the test cannot be performed on a machine engine. The user will confirm this message by selecting the "OK" button. Once the "OK" button has been selected, Cat ET will blank the screen. After the screen has been blanked, the user will need to select another menu option.

If Cat ET determines that there is only one ECM on the data link, a warning dialog box is displayed. Refer to Illustration 2.

Illustration 2	g00745256

The warning dialog box states the danger that is involved when a Dyno Mode test is performed. The user will have the option of selecting "Start" or "Cancel". When "Start" is selected, the user can begin the Dyno Mode operation. When "Cancel" is selected, the screen becomes blank.

Note: When Cat ET communicates with the Cat data link or the engine's ECM, Cat ET performs a check. Cat ET decides if Dyno Mode can be used to test the ECM. If Cat ET determines that the ECM does not support Dyno Mode, Cat ET will disable Dyno Mode. If the application supports Dyno Mode, the tool will be enabled.

When the "Dyno Mode" screen is entered, Cat ET begins monitoring the specified parameters. Refer to Illustration 3. Cat ET continues to update this data until the screen is exited or communication between Cat ET and the ECM is lost. If communication between Cat ET and the ECM is interrupted or disconnected, the ECM will exit "Dyno Mode". When the ECM exits dyno mode, all overrides are disabled.

Cat ET will monitor the engine ECM for active diagnostic codes. Cat ET will compare the codes and Cat ET will then filter the codes that are received against the internal ECM nuisance table. Active codes that are received by the ECM will not be displayed as active as long as the codes are defined in the ECM nuisance table. If the active codes that are received are not defined in the ECM nuisance table, Cat ET will display ""Yes" active diagnostic codes are present".

After the user has selected the "Start" button, the "Dyno Mode" screen is displayed. Refer to Illustration 3. At this time, Cat ET will begin writing to the "Test Cell Mode"parameter. This communication will continue until the test is exited or communication is interrupted. Once the test is exited or communication is interrupted, Cat ET will no longer write to this parameter. The ECM will then exit the "Dyno mode".

Note: Illustration 3 and Illustration 4 do not represent the actual status display order.

Illustration 3	g00745263

The Dyno Mode screen is divided into two parts. The top section of the Dyno Mode screen is the status area. The bottom section of the Dyno Mode screen is the override parameters area.

The status area monitors ECM data as the data occurs. The status area displays the following information: the parameter's name, the parameter's value and the unit of measurement that is associated with the value. A value of "Unavailable" will be displayed when either of the following instances occur:

• A parameter is not supported by the current ECM.

• There was an error in reading the data.

The Dyno Mode Tool supports the following Status Parameters. The parameters are displayed on the Caterpillar ET screen in the following order:

• Actual engine speed

• Desired engine speed

• Fuel position

• Rated fuel limit

• Boost pressure

• Atmospheric pressure

• Engine load factor

• "FRC" Fuel Limit

• Fuel temperature

• Engine coolant temperature

• Engine oil pressure

• Right exhaust temperature

• Left exhaust temperature

• Wastegate position

• Active diagnostic codes are present.

The override parameters section of the screen allows the user to view the override parameters. The override parameters section of the screen also allows the user to change the override parameters. This section allows the user to place the specific parameters in and out of override mode. The override parameters area has the following three columns: Description, Value and Mode. The description column shows the name of the parameters that are being set. The value column displays the current parameter value. The mode column shows the mode of the parameter. These three columns are resizable.

The user will have the ability to adjust the size of the status area and the override parameters section. When the size of the status area is reduced, a vertical scroll bar will be displayed. Refer to Illustration 4. The override parameters area will always allow the user to view the override parameters. A scroll bar is used to size the status area.

Illustration 4	g00745348

The user will have the ability to override the Desired Engine RPM and the Engine Rating Map. There are two ways to override the "Engine RPM" and "Engine Rating Map":

• Select the parameter and then press the "Change" button.

• Double click on the specific parameter.

After the "Engine RPM" and the "Engine Rating Map" have been overridden, a "change parameter value" dialog box will appear. Refer to Illustration 5 and Illustration 6. These dialog boxes will allow the user to override the selected parameter. The user can enter a value. The user then presses the "OK" button or the "Enter" key. Cat ET will display "Are you sure" dialog box. The dialog box will contain "Yes" and "No" as options. When "No" is selected, no changes will be made. When "Yes" is selected, the process will continue.

At this point, Cat ET will write the new value to the ECM. If the new value is not within an acceptable range, the ECM will respond with the original value. If the ECM responds with the original value, Cat ET will display a dialog. This dialog will state "The value entered was out of range and the value will not be changed". If the ECM adjusts the value to the minimum or to the maximum, Cat ET will display a dialog which states "The value entered is not valid". Selecting the "Cancel" button will not make any changes to the parameter. Both the "OK" and "Cancel" buttons are enabled at all times.

Illustration 5	g00745314

Illustration 6	g00745342

There are three options that are available after the "Dyno Mode" operation has been completed:

• Select "Stop".

• Exit Cat ET

• Select another menu option.

When any of these three options are selected, Cat ET will display a dialog box. Refer to Illustration 7. This dialog box will inform the user that diagnostic codes may have been logged. If "Yes" is selected, the user will be taken to the "Logged Diagnostic Codes" screen. If "No" is selected, the dialog box disappears.

Illustration 7	g00745356

Button Descriptions for the "Dyno Mode" Screen

All screen buttons will have accelerated keys.

Change - The change button allows the user to change the value of the currently selected parameter. Selecting this button will display a "Change Parameter Value" dialog box (Illustration 5 and Illustration 6). This button will be enabled at all times.

Disable Override - The "Disable Override" button takes the selected parameter out of the override mode. This button will only be enabled when the selected parameter is in the override mode.

Stop - The "Stop" button takes all parameters out of the override mode. This button will be enabled at all times. When this button is selected, the Dyno Mode test will terminate. The final dialog box will then appear. Refer to Illustration 7.

Print - The "Print" button allows the user to perform the following functions: print to file, print to printer and print preview. This button will be enabled at all times. The print format will contain the ECM Summary, Status, and Override parameters.

Engines that are Capable of Using "Dyno Mode"

Table 1

Engines That Are Capable of using "Dyno Mode"
Engine	Model Number	Engine S/N Prefix	Machine S/N Prefix	Map Number and Horsepower Rating
3176C	345B HEX	7ZR	4SS, 9GS, 2NW	00 - 312 HP
3176C	345BL II HEX	7ZR	5WS, 6XS, 2ZW, 3MW, 4SW, 8KW, 9CW, 6MW, 8RW, ALB, APB, ANJ, 7KS	00 - 344 HP
3196	365B HEX	6AR	9PZ, 9TZ, AGD, 4XZ	00 - 412 HP
3456E	385B HEX	BLC	ANS, BKF, BKX	00 - 552 HP
3176C	480/485 Combine	7ZR	2BZ, 8ZW	01 - 365 HP
3400E HEUI	5110B MS	80M	AAA	00 - 750 HP
3500B ENG	5130B MS	2GR	4CS, 5ZL	01 - 1000 HP 02 - 920 HP
3400E HEUI	565 CPPI	99C	8GS	00 - 525 HP
3406E ENG	620G WTS	9AP	2XW	00 - 358 HP 01 - 393 HP
3408E HEUI	631 WTS	99C	1AB 1NB	00 - 515 HP 01 - 473 HP 02 - 613 HP
3412E HEUI	651 WTS (front)	80M	4YR	00 - 577 HP 01 - 631 HP 02 - 632 HI HP
3412E HEUI	657S WTS (rear)	80M	5YR, 6TR	01 - 577 HP 02 - 631 HP
3408E HEUI	769/771	99C	5SS, 5TR	00 - 475 HP 01 - 502 HP 02 - 510 HP
3408E HEUI	771 OHT	99C	6YS	00 - 475 HP 01 - 510 HP 02 - 502 HP
3412E HEUI	773 OHT	80M	7ER	00 - 654 HP 01 - 682 HP
3412E HEUI	775 OHT	80M	6KR, 8AS	00 - 682 HP 01 - 691 HP 02 - 725 HP
3508B ENG	776D OHT	2GR	5ER, AFS	01 - 1000 HP 02 - 920 HP
3508B ENG	777D OHT	2GR	AGC, AGY	01 - 1000 HP 02 - 920 HP
3516B ENG	785C OHT	7TR	5AZ	01 - 1380 HP 02 - 1450 HP
3516B ENG	789C OHT	7TR	2BW	00 - 1800 HP 02 - 1900 HP
3516B ENG	793C OHT	7TR	4AR, 4GZ, ATY	01 - 2160 HP 02 - 2300 HP
3512B ENG	797 Front ENG	1AW	5YW	00 - 1700 HP
3512B ENG	797 Rear Eng	2CS	5YW	00 - 1700 HP
3456E	834G CPT	7RC	6GZ	01 - 495 HP
3456E	836G CPT	7RC	7MZ	00 - 525 HP
3408E HEUI	988F WL	99C	2ZR	00 - 459 HP
3456	988G WL	7RC	2TW	00 - 495 HP 01 - 697 HP
3412E HEUI	990 WL	80M	4FR	00 - 675 HP
3508B ENG	992G LWL	2GR	7HR, ADZ	00 - 880 HP
3516B ENG	994D/G LWL	7TR	3TZ	00 - 1380 HP
3176C ENG	Challenger 65E	7ZR	1GM, 6GS	01 - 320 HP
3176C ENG	Challenger 75E	7ZR	1HM, 6HS	01 - 350 HP
3196 ENG	Challenger 85E	6AR	1NM, 6JS	01 - 350 HP 02 - 385 HP
3196 ENG	Challenger 95E	6AR	1SM, 6KS	01 - 350 HP 02 - 385 HP 03 - 420 HP
3400E HEUI	D10R TTT	80M	3KR	00 - 612 HP
3500B ENG	D11R TTT	2GR	7PZ, AAF	00 - 936 HP
3176 ENG	D250	3PD	AFX	00 - 300 HP
3176 ENG	D300	5ED	AGF	00 - 322 HP
3406E ENG	D350E Series II	9AP	2XW	00 - 382 HP
3406E ENG	D400	9AP	2YR, 8PS, APF	00 - 426 HP
3406E HEUI	D8 TTT	BET	6YZ	00 - 337 HP
3408E HEUI	D9R TTT	99C	7TL	00 - 442 HP
3408E HEUI	Elphinstone 69D	99C	9XS, 9SS	00 - 510 HP
3412E HEUI	Elphinstone 73D	80M	1GW, 9YS	00 - 682 HP
3408E HEUI	Elphinstone AE40	99C	1ZZ	00 - 490 HP