Using the Operator Monitor to Determine Diagnostic Codes

279C Compact Track Loader MBT00001-UP (MACHINE) POWERED BY 3044C Engine(SEBP5067 - 42) - Documentation

Friday, February 05, 2016

10:10 PM

Welcome: d430btm1

/ Product:COMPACT TRACK LOADER
Model:279C COMPACT TRACK LOADER MBT
Configuration: 279C Compact Track Loader MBT00001-UP (MACHINE) POWERED BY 3044C Engine

Troubleshooting

279C, 279C2, 289C, 289C2 and 299C Compact Track Loaders, 287C, 277C, 277C2, 287C2 and 297C Multi Terrain Loaders and 246C, 256C, 262C, 262C2 and 272C Skid Steer Loaders Machine Electronic Control System

Media Number -KENR5119-05 / Publication Date -01/12/2012 / Date Updated -12/12/2012

i03982231

Using the Operator Monitor to Determine Diagnostic Codes

SMCS - 7490; 7569

Illustration 1 / g01355699
(1) Right Side Instrument Cluster (Cab Display)
(2) Right Side Digital Data Window
(3) Scroll Up Button
(4) Scroll Down Button
(5) Function Select Button
NOTICE
Service Mode is intended for use by service personnel, not operators.

The Service Mode allows the viewing and the troubleshooting of various systems. The Service Mode is one of two modes that are displayed on the Digital Data Display window (2) that is located on the right side Instrument Cluster (Cab Display) (1) .

Navigating the Service Modes

Enter the Service Mode

Enter the Service Mode screen by pressing the Function Select button (5) and simultaneously pressing the Scroll Up button (3) for 3 seconds.

Exit the Service Mode

Exit the Service Mode screen by pressing the Function Select button (5) and simultaneously pressing the Scroll Up button (3) for 3 seconds. This action will return the Digital Data display to Operator Mode 0 and the engine speed will be displayed.

Navigate the Service Mode Screens

Navigate through the Service Mode screens by pressing the Function Select button (5) .

The Service Mode has the following seven screens. Several of these seven screens contain lower-level screens. Press the Scroll Up button (3) or the Scroll down button (4) in order to scroll one by one through items of these lower-level screens.

Service Mode 1

Service Mode 1 displays the Active Diagnostics.

Service Mode 2

Service Mode 2 displays the Logged Diagnostic.

Service Mode 3

Service Mode 3 displays the Active Events.

Service Mode 4

Service Mode 4 displays the Logged Events.

Diagnostics

The Diagnostic Service Modes and the Event Codes are used by service personnel in order to troubleshoot machine systems. The Diagnostic Service Modes and the Event Codes are screens 1 through 4. See Table 1.

Diagnostic Code Screens
Service Modes / Number / Description
1 / Variable With the Number of Active Diagnostics, Logged Diagnostics, and Events / Active Diagnostics
2 / Variable With the Number of Active Diagnostics, Logged Diagnostics, and Events / Logged Diagnostics
3 / Variable With the Number of Active Diagnostics, Logged Diagnostics, and Events / Active Events
4 / Variable With the Number of Active Diagnostics, Logged Diagnostics, and Events / Logged Events

Table 1

Diagnostic Codes

Diagnostics

The main display module detects diagnostic codes that occur with sensor inputs, sender inputs, and main display module outputs while the main display module is in the normal mode. A diagnostic code is detected when the signal is outside a valid range. The main display module then records the diagnostic code. The diagnostic code remains stored for future reference.

The main display module detects diagnostic codes and the main display module diagnoses problems in the following circuits:

Display output modules

Action alarm output
Action lamp output

Note: The main display module does not detect problems with the switch inputs.

Service personnel can see the diagnostic codes and service personnel can troubleshoot the diagnostic codes when the main display module has detected a problem. All detected failures are shown in the display area as diagnostic codes.

The diagnostics of the monitoring system are available to assist with the troubleshooting of failures when the main display module is placed in service mode. A diagnostic code is used to specify each problem. The diagnostic code is made up of three identifiers (MID, CID and FMI). These identifiers are shown in the display area. The display area continuously changes between the following identifiers when the diagnostic code is on hold:

Module Identifier (MID) - The MID is a three-digit code that is shown on the display area. The MID is shown for approximately one second before the diagnostic code is displayed. The ECM that has diagnosed the failure is logged by the MID. The MID for the Machine ECM is 039.

See the table for the Module Identifier (MID) on the Electrical System Schematic for the machine that is being serviced for the most complete list. In order to troubleshoot diagnostic codes, use the Service Manual for the control that detected the problem.

Component Identifier (CID) - The components that have failed are noted by the CID. The following components are examples:

Transmission oil temperature sensor
Speed sensor
Action lamp
Boost pressure sensor

The CID is a four-digit code that is shown on the six-digit display area of the Digital Data window. The CID and the FMI are shown together after the MID has been displayed.

Failure Mode Identifier (FMI) - The FMI reports the type of failure that has occurred. The FMI is a two-digit code that is shown on the six-digit display area. The CID and the FMI are shown after the MID is displayed. The CID and the FMI are separated by a decimal point ".". See Troubleshooting, " Diagnostic Code List". The table for the Module Identifier (MID) on the Electrical System Schematic will show a list of FMIs for the main display module. Examples of the FMIs follow:

Voltage above normal
Current below normal
Abnormal frequency

When the main display module enters the service mode, the MID, the CID, and the FMI are shown. At this time, the diagnostic code that is shown is on hold. The display area continuously changes between the following identifiers when the diagnostic code is on hold:

The display is maintained as long as the service and clear inputs remain open. Troubleshooting is performed while the diagnostic code is on hold.

Note: The display shows "- - - -" when the main display module has no diagnostic codes.

All diagnostic codes are shown one at a time in the display area when the diagnostic codes are scrolling. When the main display module is in the service mode, grounding the service input causes the display to scroll. This will momentarily show the MID. The display will show the CID and the FMI that corresponds. When the diagnostic code that is desired is shown, removing ground from the service input stops the scrolling. The diagnostic code that is shown is now on hold.

Note: The diagnostic codes from other ECMs can be shown on the display. Use the same procedure in order to place the diagnostic codes on hold.

Diagnostics are provided in order to assist service personnel during troubleshooting of intermittent diagnostic codes. The service code indicator ("SERV CODE") is shown when the diagnostic code is present. This can aid in the troubleshooting of intermittent diagnostic codes. The service code indicator changes from "SERV CODE" that is OFF to "SERV CODE" that is ON. This occurs when the diagnostic code changes status. When the diagnostic code is on hold for a problem the action alarm SOUNDS briefly during the change of status. These diagnostics signal the service personnel while inspections are performed. These diagnostics assist in troubleshooting intermittent diagnostic codes by one service person.

A diagnostic code is removed from the memory of the main display module when the diagnostic code has been cleared. When a problem is corrected, it is necessary to remove the corresponding diagnostic code from the memory of the main display module. See "Clearing Logged Diagnostic Codes" for details on clearing logged diagnostic codes.

The memory of the main display module saves a diagnostic code until the code is cleared. The main display module does not allow clearing of a diagnostic code that corresponds to a diagnostic code which is present.

Service Mode 4

Service Mode 4 displays the software part number of the machine ECM .

Service Mode 5

Service Mode 5 displays the machine parameters.

Service Mode 5 has four screens. See table 2. The default screen is Screen 1 which displays the engine coolant temperature.

Service Mode 5 Screens
Service Mode / Screen / Description
5 / 1 / Engine Coolant Temperature
2 / Hydraulic Oil Temperature
3 / Left Drive Motor Speed and Direction
4 / Right Drive Motor Speed and Direction

Table 2

Service Mode 6

Service Mode 6 displays the parameters of the components.

Service Mode 6 has nine screens. See table 3. The default screen is Screen 1 which displays the Throttle Cab Switch Position.

Service Mode 6 Screens
Service Mode / Number / Description
6 / 1 / Throttle Cab Switch Position
2 / Left Joystick X-axis Position
3 / Left Joystick Y-axis Position
4 / Right Joystick X-axis Position
5 / Right Joystick Y-axis Position
6 / Parking Brake Switch
7 / Backup Alarm Relay
8 / Stop Lamp Relay
9 / Ride Control Relay

Table 3

Service Mode 7

Service Mode 7 displays the Display Unit setting. Service Mode 7 is used in order to program the Display Unit setting.

Service Mode 7 has two screens. See table 4. The default screen is the currently selected units.

Service Mode 7 Screens
Service Mode / Number / Description
7 / 1 / English
2 / Metric

Table 4

Inserted from <