Herramienta Cat ET caterpillar

Cat Electronic Technician Course 01/04

3-1-1

Module Three Lesson One

1-1

Lesson One: Cat ET Engine Engine Diagnostic Diagnostic Functions Functions Introduction

This lesson covers the use of Cat ET for diagnosing electrical and mechanical problems on Caterpillar engines. This information is generic in nature unless otherwise indicated. The subjects covered are: • Diag Diagnost nostic ic top topics ics

- Electronic Unit Injector Testing - System Component Calibrations - Miscellaneous Diagnostic Routines

Cat Electronic Technician Course 01/04

3-1-2

Module Three Lesson One

1-2

Electronic Unit Injector Testing Accessing Diagnostic Routines • Accessing Accessing inje injector  ctor  tests

Access to Cat ET Injector Tests is reached only through the Diagnostics  pull down menu as follows: Diagnostics Diagnosti cs / Diagnostic Tests

• Two inje injector ctor tests available

There are two basic injector tests which can be accessed from this menu depending on the application selected: Injector Solenoid Test Cylinder Cutout Test There are a variety of methods of testing injectors within the two categories listed above, these will be covered later. The Injector Solenoid Test Test is accessed through the Diagnostics pull down menu using the following menu sequence: Diagnostics / Diagnostic Tests / Injector Solenoid Test

NOTE: The injection actuation test, override parameters, and the wiggle test can also be accessed from the diagnostic tests menu and will be covered later in the presentation.

Cat Electronic Technician Course 01/04

3-1-3

Module Three Lesson One

1-3

Injector Solenoid Tests • Inje Injector ctor soleno solenoid id tests tests

There are several methods of testing injectors (and cylinders) for  mechanical and electrical faults using using Cat ET. ET. The first category to be described is the Injector Solenoid Test. This test can be performed when troubleshooting injector open/short diagnostic messages. The Solenoid Test Test is usually performed performed first  because it is done with the engine off. The Injector Solenoid Test verifies that the circuits from the ECM to the injector are currently currently functioning. The ECM injector power supply and drivers, the external/internal wiring harnesses, and the injector solenoids are tested. If no active fault is is found, the logged fault screen screen should be checked. It is  possible that a loose connection could cause an intermittent fault which may not be evident at the time of testing.

• Automatic Automatic solen solenoid oid test • Faulty Faulty cylin cylinders ders identified

There are two ways to test the solenoids. The first method, shown here, is automatic, and tests each solenoid in sequence. sequence. Select the Test All button, or the A key. A defective solenoid circuit will will appear on the screen as shown above. In this case, the screen shows cylinder 7 is open. There are differences between the automatic test on highway truck and machine engines, trucks will test the solenoids solenoids continuously in sequence and machines will test once through the injectors and then stop.

NOTE: Striking the letter underlined on the button performs the same function as clicking the button.

Cat Electronic Technician Course 01/04

3-1-4

Module Three Lesson One

1-4

• Manual Manual (indivi (individual dual)) injector solenoid test

The other method of testing injector solenoids is to individually test each cylinder.. This method is useful when an intermittent injector fault is cylinder indicated on the Logged Fault screen. However, this this method does not work with on highway on truck engines. With the suspect cylinder highlighted, select the Test button or the E key on the keyboard. The solenoid can be repeatedly fired while the affected wiring harness and connectors are manipulated. When the fault is found, the Cat ET screen will show an open or short circuit as seen above. In this case, the test has identified an open circuit on cylinder number 7. This test is commonly called the "clack test" from the noise accompanying injector solenoid actuation.

• Interpret Interpretatio ation n of  of  solenoid test sounds

The sound, or lack of sound from the test, is not in itself, a conclusive symptom of a faulty injector. When testing a HEUI injector however, a dead cylinder with no sound at all, but accompanied by a normal electrical test indication, could mean that the poppet valve is stuck. This condition could be caused by improper injector removal or  installation, resulting in misalignment of the poppet valve bore, and thereby leading to a stuck poppet valve. The use of a pry bar to to remove a 3408/12E HEUI injector usually causes distortion of some close tolerance machined parts such as the poppet popp et valve and valve body.

Cat Electronic Technician Course 01/04

3-1-5

Module Three Lesson One

1-5

Cylinder Cutout Test • Cylinder cutout tests

The Cylinder Cutout Test is the second category of injector tests. This test can be used when no diagnostic message is present and the problem is mechanical. The test is accessed through the Diagnostics pull down menu using the following menu sequence: Diagnostics / Diagnostic Tests / Cylinder Cutout Test

Cat Electronic Technician Course 01/04

3-1-6

Module Three Lesson One

1-6

• Automatic and manual cylinder cutout tests

There are two basic Cylinder Cutout test routines, au tomatic and manual. The automatic test, shown above, will test all cylinders and make a comparison between them. The numbers are not a finite measurement but are purely comparative. This test is performed with the engine running. There are four buttons below the main box, at the bottom of the screen:

• Cutout controls

Change

Cuts out an individual cylinder 

Power All Re-powers a cutout cylinder  Start

Starts the automatic sequence

Stop

Stops the automatic sequence

Cat Electronic Technician Course 01/04

3-1-7

Module Three Lesson One

1-7

• Manual cutout test

In the case of engines with 12 cylinders or more, it is difficult to tell if a cylinder is misfiring. It is easier to find the defective cylinder by cutting out one bank completely and then checking the other bank.

• Torque stall test

Another method is to perform a torque stall and watch the rpm drop as each cylinder is cutout. Typically the rpm will drop about 100 rpm as the cylinder is cutout. A dead cylinder will show no change. In the illustration above, the odd numbered cylinders have been cutout and the even numbered cylinders are being tested. Cylinder No. 7 is being manually cutout. The engine noise will change if it is a good cylinder and will not if it is a dead cylinder. Injection duration and fuel position will also change if it is a good cylinder. Cutting out a bank adds a significant parasitic load to the opposite bank and helps to show a more easily visible and audible change when a cylinder is cutout. Adding more rpm (with a fixed throttle setting) also helps, particularly with an eight cylinder engine. To manually cutout a cylinder: Highlight the desired cylinder, and Click on the Change button or  Depress the letter C

Cat Electronic Technician Course 01/04

3-1-8

Module Three Lesson One

1-8

• Intermittent injector  faults

An intermittent injector fault can be recognized by the "Occ." (occurrence) portion of the Logged Fault screen. In this case a No. 7 cylinder fault has registered 4 occurrences in about 1 hour between 33 and 34 engine hours. Usually the occurrences are much higher (around 100) and this will normally indicate that there is a n intermittent problem and is most likely caused by a loose connection.

• Locating a loose connection

To locate this type of fault, return to the Injector Solenoid Test Screen and highlight the cylinder in question. Press the Test key to perform the "clack" test as the wiring is manipulated in various ways. Eventually, the fault will be located as the wiring is disturbed. The circuit should be retested and logged faults cleared. Note that an active injector wiring fault cannot be observed on Cat ET unless the engine is running. Conversely, a solenoid test is performed with the engine stopped.

Cat Electronic Technician Course 01/04

3-1-9

Module Three Lesson One

ECM Injection Strategies • Automatic injector  disconnect

If an out of normal range current flow is detected by the ECM, then the injector will be deactivated for about 10 cycles. Thereafter, the ECM will  periodically retry the injector and disconnect if the problem is still  present. This explains why a suspect injector may be automatically activated and deactivated at regular intervals on the cylinder cutout screen.

• Cold cylinder cutout strategy

Some 3500 engines employ a Cold Cylinder Cutout Strategy. This  process provides a means of reducing white smoke after a cold start. Also some damage could be sustained by raw fuel washing down the cylinder   bore leading to a piston seizure. During cold running conditions, the ECM determines if a cylinder is not firing by turning off the cylinder and measuring the "rack." If there is no change, then that cylinder is disconnected and the process moves on to the next cylinder. The process continues until the complete engine is checked for misfiring cylinders. The cycle repeats until the engine has warmed up.

• Cold cylinder cutout disabled when: - Throttle opened - Gear selected - Engine up to temp - Parking brake off 

The Cold Cylinder Cutout process is independent of cold mode. This  process is a function of coolant temperature, throttle position, parking  brake position, and some transparent parameters within the ECM. All of  the conditions have to be met in order for the strategy to be enabled. If the throttle is opened, a gear is selected or the engine comes up to temperature, the process is disabled. This process should not be confused with a misfire caused by an electrical fault or other mechanical malfunction.

NOTE: The term "rack" does not imply that a physical rack is present in an EUI engine. The term is synonymous with that used with mechanical fuel systems.

Cat Electronic Technician Course 01/04

3 - 1 - 10

Module Three Lesson One

1-9

System Component Calibrations There are three components which are calibrated and covered in this lesson: Speed/Timing Sensors Pressure Sensors Injectors • Speed/timing sensor  calibration

Speed/Timing Sensor Calibration

Select the Speed/Timing Sensor calibration through the pull down menu as follows: Service / Calibrations / Timing Calibration

Cat Electronic Technician Course 01/04

3 - 1 - 11

Module Three Lesson One

1-10

Once the timing calibration sensor is installed, the engine is running, and the calibration screen is initiated, press the Continue  button at the lower  left hand portion of the calibration screen. • Speed/timing sensor  calibration engine speed setting

It is not always necessary to set the engine rpm for this procedure. This step is usually performed automatically by Cat ET when the timing calibration sequence is initiated in the ECM. Engine speed is set to 800 rpm. If an error of 10º or more is detected, for example, timing calibration is aborted. (These numbers may vary from application to application.)

• Sensor calibration required after: - ECM replacement - Timing adjustment

Calibration is required after an engine timing adjustment. If the ECM is replaced and the ECM Replacement Function is performed, the calibration data is copied with the other parameters to the new ECM. If not, calibration is necessary. Most engine Service Manuals do not call for a calibration after a Speed/Timing Sensor replacement. However, in this case, good judgement may be the deciding factor.

Cat Electronic Technician Course 01/04

3 - 1 - 12

Module Three Lesson One

1-11

Pressure Sensor Calibration • Two methods to calibrate pressure sensors

There have been two methods to perform pressure sensor calibration; the key switch, and the Cat ET methods. The ET method has been deleted with some engines. Using the same pull down menu used with Speed/Timing sensor  calibration, select: Service / Calibrations / Pressure Sensor Calibration

• Cat ET pressure sensor calibration

Unlike Speed/Timing Sensor Calibration, the engine cannot be running during Pressure Sensor Calibration. The Pressure Sensor Calibration feature is only present in the pull down menu if the feature applies to the engine selected. The atmospheric pressure sensor is used as the baseline to adjust the other   pressure sensor outputs. Other sensors with readings which do not agree with the atmospheric sensor's output readings will be adjusted (within limits) to agree with the atmospheric sensor. Select Start or A to begin the sensor calibration. Oil gauge pressure on ET is a calculation (oil pressure - atmospheric  pressure). On some engines it is possible to read absolute and gauge  pressures, they should not be confused.

Cat Electronic Technician Course 01/04

3 - 1 - 13

Module Three Lesson One

As long as the error is within the calibration range, the error will be corrected by this process. If not, a repair is necessary. There is a diagnostic routine built into the program which will identify a calibration problem. It could be that a sensor is out of the normal output range for calibration. For example, the reason for calibration may be that oil pressure reads +4 psi (28 kPa) with the engine stopped. This means that the oil pressure sensor absolute pressure reading is 19 psia (129 kPa). Oil gauge pressure is a calculation (oil pressure - atmospheric pressure). As long as the error is within the calibration range, the error will be corrected by this process. If not, a repair is necessary. Some engines only use the key switch method for calibration. To calibrate the pressure sensors on most new engines, it is only necessary to turn the keyswitch on for five seconds without starting the engine.

Cat Electronic Technician Course 01/04

3 - 1 - 14

Module Three Lesson One

1-12

• Status screen configured for  troubleshooting

When troubleshooting a multiple pressure sensor problem, it is advantageous to create a status screen as shown above. All the sensor  outputs can now be verified simultaneously. When using the status screen to troubleshoot a problem, the oil pressure sensor reading should agree with the atmospheric sensor read ing with the engine stopped. Most engine pressure sensors are the absolute type.

INSTRUCTOR NOTE : This scenario can be easily set up for a class using the Training Aid simulation.

 psia = pounds/sq. absolute  psig = pounds/sq. gauge

Cat Electronic Technician Course 01/04

3 - 1 - 15

Module Three Lesson One

1-13

EUI and HEUI Injector Calibration

 Not all electronically controlled engines require injector calibration. In this case, the example is a C-9 Industrial Engine (lower portion of screen). To access Injector Calibration, use the following pull down menu sequence: Service / Calibrations / Injector Codes Calibration • Injector calibration balances fuel flow and timing between cylinders

The purpose of Injector Calibration is to enable a more precise fuel flow and timing balance between cylinders. The injectors are flow checked and calibrated at the factory. Any minute fuel flow deviations are represented by a code stamped on the top of the injector. These codes are  programmed into the ECM with the injector calibration function. If for any reason, injectors are changed, or interchanged, it is essential that calibration is performed for the affected injectors to avoid imbalance  between cylinders. There are two types of injector calibration.

• Two forms of injector  calibration

Trim code calibration Trim file calibration (used with ACERT engines)

Cat Electronic Technician Course 01/04

3 - 1 - 16

Module Three Lesson One

1-14

The numbers seen on the right hand side are the default values which will  be used if no values are pre-programmed. As the values from the injectors are read, they are transferred to the ECM using this screen. This process provides a more even flow to each cylinder, and therefore more even, smooth power balance throughout the engine. To input the code: • Input injector  calibration codes

Highlight the desired injector, as seen above Click on the Change button Enter the new code in the change screen Confirm the change by selecting OK  The changes are automatically saved as each injector code is entered.

• ECM replacement

All the calibrations previously mentioned are copied o ver to a new ECM if the Copy Configuration / ECM Replacement function is performed when the ECM is replaced. The only parts that must be manually  performed are the loading of the flash file and rating selection.

Cat Electronic Technician Course 01/04

3 - 1 - 17

Module Three Lesson One

1-15

ACERT Injector Trim Calibration

Engines with ACERT Technology have a very different method of trim calibration from previous engines. Injector trim calibration results in each injector performing virtually identically within very close limits throughout the operational envelope. In order to reach the very finely required tolerances in injector   performance and to meet the current EPA requirements with on highway truck engines, the injectors must be calibrated to very fine tolerances. At every point on the operational speed curve, each of the injectors must  perform with identical timing and fuel quantity. This degree of accuracy is only possible with a multiple point calibration, which in turn is only  possible with very sophisticated calibration data uploaded to the ECM. Software maps were previously in the ECM. The ECM would select the correct map using the trim code from the face of the injector. This code was typically 4 or 6 digits. Injector trim calibration on engines with ACERT Technology have a greater volume of information to be uploaded to the ECM than before. This volume precludes the use of simple trim cod es normally stamped on the injector. The trim code if used, would contain hundreds of characters, obviously not practical in this case.

Cat Electronic Technician Course 01/04

• Trim files used for  calibration

3 - 1 - 18

Module Three Lesson One

In order to accommodate this volume of data, it is loaded into a trim file which is uploaded to the Engine ECM. Engine with ACERT Technology are also now appearing in other  applications including machines. These engines will also require injector  calibration using trim files.

Cat Electronic Technician Course 01/04

3 - 1 - 19

Module Three Lesson One

1-16

Downloading Injector Trim Files

As previously mentioned, the injectors are calibrated using data from a file. The file is identified by the injector serial number (seen on the following illustrations). This process is not unlike the flash program  process. • Trim file sources: - SIS Windows - SIS Web - SIS Network - CD ROM with injector 

The files are stored and can be retrieved using SIS (Service Information System). The files are also provided with the replacement injectors on CD. At the time of writing there are two Trim File CDs supplied with SIS Windows, by the end of the year, the files will be on 1 DVD. Also trim files are available on a separate CD for TEPS dealers. The injector serial number must be obtained first in order to download the file to the PC.

Cat Electronic Technician Course 01/04

3 - 1 - 20

Module Three Lesson One

1-17

Locate the injector serial number obtained from the injector as shown above (arrow). • Injector confirmation codes - Cross checks injector serial number 

Also locate the "Injector Confirmation Code" to the right of the Serial  Number, in this case 4382. The serial number and four digit random number is printed onto the injector using a laser The four digit random number is included in the trim file. This feature is a security measure to make sure the mechanic actually has the injector in hand. Cat ET (Electronic Technician) cross checks the injector serial number and code in the trim file with what is typed in. If there is not a match, a dialog box will appear (shown later).

Cat Electronic Technician Course 01/04

3 - 1 - 21

Module Three Lesson One

1-18

• SIS - Source of trim files

Start the SIS (Service Information System) program. On the SIS main menu, locate "Injector Trim Files" (arrow).

NOTE: If this item is not on the main menu, then the Dealer SIS Coordinator should be contacted to have the SIS Web profile changed to turn on the "Injector Trim Files."

Cat Electronic Technician Course 01/04

3 - 1 - 22

Module Three Lesson One

1-19

• File downloads

Follow the instructions on screen (left arrow) which says: "Please enter valid search criteria to the right ." Follow the instruction on the right hand side marked: "Injector Trim File Download " This box is used to input the serial number (right arrow) for the injector. This serial number is the same as the file name for the trim file.

Cat Electronic Technician Course 01/04

3 - 1 - 23

Module Three Lesson One

1-20

• Entering injector  serial number 

Enter the injector serial number in the box (arrow) to identify the trim file for downloading.

Cat Electronic Technician Course 01/04

3 - 1 - 24

Module Three Lesson One

1-21

• Search for trim file

Click on the Search button, this action will download the file. The file will appear on the left hand side (arrow). Click on this file name (arrow), this will bring up the “File Download" dialog box. The file version number can be ignored when performing the calibration. There is no need to perform an upgrade if the injector file is an earlier  version than the file in SIS. This information is used by the factory and does not affect replacement or calibration of injectors.

NOTE: Only one file can be downloaded at a time.

Cat Electronic Technician Course 01/04

3 - 1 - 25

Module Three Lesson One

1-22

• Trim file download

After the Search button is selected, the File Download dialog box will appear. - Check the button: Save this file to disk  - Click the OK  button The "Save AS" dialog box will appear.

Cat Electronic Technician Course 01/04

3 - 1 - 26

Module Three Lesson One

1-23

Using the "Save AS" dialog box: Click on the folder Injector Trim Files Click the Open button (opens the folder) • Saving file to PC

Click the Save button in order to save the file to the PC Once all the files are all downloaded to the PC, they can be uploaded to the the ECM for calibration.

NOTE: A folder called Injector Trim Files, can be created to contain the downloaded trim files. Cat ET preferences can then be set to automatically look to this folder for the trim files.

Cat Electronic Technician Course 01/04

3 - 1 - 27

Module Three Lesson One

1-24

Calibrating Injectors with ACERT Technology

Open Cat ET and select the following from the Service pull down menu: • Cat ET pull down menu

Service / Calibrations / Injector Trim Calibration

NOTE: Both Dealer and Customer ET can be used to perform this operation. No passwords are required to perform calibrations.

Cat Electronic Technician Course 01/04

3 - 1 - 28

Module Three Lesson One

1-25

• Select injector for  calibration

Select the injector to program and click the Change button at the bottom of the screen. In this case injector number one is selected. The "Open" dialog box will appear.

NOTE: There is also an Exchange  button at the bottom of the screen. This button is used to switch the position of two injector files and will be covered later in the presentation.

Cat Electronic Technician Course 01/04

3 - 1 - 29

Module Three Lesson One

1-26

• Select file

Select (highlight) the file for calibration. This file will be copied to the ECM.

NOTE: The Cat ET preferences menu allows the Injector Trim Files folder to be automatically located in the same way as the Flash File folder  is located.

Cat Electronic Technician Course 01/04

3 - 1 - 30

Module Three Lesson One

1-27

• Enter confirmation code

Enter the Confirmation Code, this code was recorded from the injector  with the serial number. This code ensures that the correct and compatible file is selected – a confirmation. Cat ET determines if the Confirmation Code and the file are a valid pair. If not, Cat ET will display an error message a s shown on this slide.

Cat Electronic Technician Course 01/04

3 - 1 - 31

Module Three Lesson One

1-28

• Emissions warning

A prompt Indicates emissions could be affected by an input error. If Yes is selected, ECM programming will start.

Cat Electronic Technician Course 01/04

3 - 1 - 32

Module Three Lesson One

1-29

• Double check injector  code

Upon successful completion, the Injector Serial Number field will have a new value. At this point, it is prudent to double check that the serial number appearing against the injector represents the injector that was installed.

NOTE: It the Serial Number field has not been programmed, an Active Fault will be displayed. The engine will run but with a warning light.

Cat Electronic Technician Course 01/04

3 - 1 - 33

Module Three Lesson One

1-30

Injector Trim File Exchange

There are times when two injectors may be exchanged for diagnostic  purposes. In this case it is necessary that the files are also moved to their  respective new injector positions. To facilitate this operation and to reduce the risk of an error, a file exchange function has been added to the Injector Trim File Calibration screen. • Injector trim file exchange procedure

First, highlight the first injector to be exchanged as shown above, in this case number one. Select the Exchange  button.

Cat Electronic Technician Course 01/04

3 - 1 - 34

Module Three Lesson One

1-31

Select the second injector of the pair to be exchanged: Using the lower "With Injector" box, select the number of the new  position. In this case it is number four. Click OK .

Cat Electronic Technician Course 01/04

3 - 1 - 35

Module Three Lesson One

1-32

Upon successful completion, both Injector Serial Number fields will have new values. It is recommended that a final check be made to ensure that the correct files are installed for the respective injectors. Failure to match the files to the correct injectors may result in a customer complaint o f a rough running engine.

NOTE: The Trim Files functions described in this section are only  possible using STW/Cat ET Version 2003B or higher. If a previous version is used, none of these functions can be accessed.

Cat Electronic Technician Course 01/04

3 - 1 - 36

Module Three Lesson One

1-33

Miscellaneous Diagnostic Routines Injection Actuation Pressure Test

 Note that Cat ET is shown connected to a 3408E HEUI engine, shown on the lower right hand portion of the screen. The HEUI Injection Actuation Pressure Test allows the user to override the automatic ECM pressure control and manually change hydraulic  pressure from minimum to maximum. • Accessing the test

The test is accessed through the pull down menu as follows: Diagnostics / Diagnostic Tests / Injection Actuation Pressure Test

The purpose of this test is to perform a functional check on all the hydraulic components, such as: the pump, compensator valve assembly,  pump control valve, and the hydraulic oil pressure sensor. The pressure can be lowered using the Step Down button to the minimum  permitted by the compensator valve adjustment, and has a value of about 20% pump control valve (injection actuation) c urrent. The maximum pressure is produced using the Step Up button with about 50% pump control valve current. These values are variable depending on  parasitic load and oil viscosity. The Step Up function will stop when pressure reaches the maximum limit. Also the Step Down function will not cause the pressure to pull below the value set by the spring in the compensator valve.

Cat Electronic Technician Course 01/04

3 - 1 - 37

Module Three Lesson One

1-34

Override Parameters Function

This screen enables circuits such as the lamps highlighted to be turned on or off for troubleshooting purposes. • Accessing the Override parameters function

The screen can be accessed through the pull down menu as follows: Diagnostics / Diagnostic Tests / Override Parameters

In this case the Check Engine Lamp has been turned off for a functional check of the ECM. The Low Oil Pressure Lamp has been grounded. In the case of an open or a short in one of these circuits, the system can be turned on and off to aid in tracing the fault.

Cat Electronic Technician Course 01/04

3 - 1 - 38

Module Three Lesson One

1-35

Wiggle Test

The Wiggle Test function allows the user to determine if there is an intermittent wiring problem by indicating which parameter on the screen has moved beyond a predetermined range while "wiggling" the wiring harness, sensors, connectors etc. • Accessing the Wiggle Test

The Wiggle Test can be accessed using the following pull down menu: Diagnostics / Diagnostic Tests / Wiggle Test

Once you have selected the wiggle test through the pull down menu, a warning box will appear. If all the conditions are met, then press the OK   button. If all the conditions are not met either complete them before continuing with the test or press the Cancel button.

Cat Electronic Technician Course 01/04

3 - 1 - 39

Module Three Lesson One

1-36

• Screen Layout

The Wiggle Test screen has the following areas: Engine description and Group No. Data display Area The upper portion of the screen displays engine description and group number chosen. This area is located in the upper-left corner of the screen. The Wiggle Test display area is in a grid format and it displays the description, value, and unit of predefined ECM parameters. The Description column gives the name of the parameter. The Value column displays the status of the selected parameter. The Unit column displays the type of unit that the value is measured by. If there are more parameters to view than what are shown in the display area, a vertical scroll bar displays at the right side of the screen to view the remaining parameters.

NOTE: If the service tool is unable to read the data, "Unavailable," "Not Installed," or "Not Available" will display.

Cat Electronic Technician Course 01/04

3 - 1 - 40

Module Three Lesson One

On the Wiggle Test screen, each group can be viewed consecutively by using the "Page Up" and "Page Down" keys. A specific default group can  be viewed by selecting the key number corresponding to that Group. Groups 1 through 9 can be viewed by pressing the number keys 1 through 9. Default groups 10 through 19 can be viewed by pressing the number  keys 1 through 9 plus the ALT key. View the  by pressing the 0 number key. • Pushbuttons

The pushbuttons available in the Wiggle Test screen are: Groups … Zoom In/Zoom Out Active Codes Start/Stop

End of Lesson One

Cat Electronic Technician Course 01/04

3 - 1 - 41

Module Three Lesson One

Lesson One Lab Exercises Diagnostics with Cat ET

The following exercises will reinforce the material introduced in this lesson and will allow questions to  be asked:

1. Demonstrate the following methods of testing EUI or HEUI injectors: Solenoid test Manual cutout test Automatic cutout test Manually cutout one bank of a vee engine while testing the other bank 

2. Calibrate injectors, record values from injectors (not ACERT):

Injector No. 1 ___________

Injector No. 5 ___________ 

Injector No. 2 ___________

Injector No. 6 ___________ 

Injector No. 3 ___________

Injector No. 7 ___________ 

Injector No. 4 ___________

Injector No. 8 ___________ 

3. Calibrate speed/timing sensors

Cat Electronic Technician Course 01/04

3 - 1 - 42

Notes

Module Three Lesson One

Cat Electronic Technician Course 01/04

3 - 1 - 43

Module Three Lesson One

4. Diagnose a HEUI hydraulic pressure problem using the Injection Actuation Pressure Test.

5. Operate the Override Parameters function to turn on and off subsystems.

6. Engine with ACERT Technology (C7, C9, C11, C13, C15) a

Record the injector serial number from an ACERT engine _____________________ 

 b

Record the injector confirmation code number

c.

Access the Trim File from SIS, save the file to a directory in the PC

d.

Upload the Trim File to the ECM using Cat ET

e.

Input the Confirmation Code

f.

Perform the injector swap function on two injectors

g.

Test the engine an check for Active Faults

_____________________