345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Using Service Mode Caterpillar


Using Service Mode
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1.1. Start-Up Of The Service Mode
2.1. Changing The Service Mode
3.1. Procedure To Stop The Service Mode



Illustration 1g00904377

Monitor Panel

(1) Action lamp

(2) Character display

(3) Fuel gauge

(4) Hydraulic oil temperature gauge

(5) Engine coolant temperature gauge

(6) Charge alert indicator

(7) Alert indicator for the engine oil pressure

(8) Alert indicator for the hydraulic oil temperature

(9) Alert indicator for the engine coolant temperature

(10) Clogged air filter indicator

(11) Indicator for a hydraulic return filter that is clogged

(12) Controller alert indicator

(13) Monitor alert indicator

(14) Air heater indicator

(15) Fuel level alert

(16) Hydraulic oil level alert

(17) Engine oil level alert

(18) Alert indicator for the engine coolant level

(19) Power mode switch

(20) AEC switch

(21) Travel speed control switch

(22) Travel alarm cancel switch

(23) Boom priority mode switch

(24) Swing priority mode switch

(25) Fine control mode switch

(26) User mode switch

(27) Pictograph symbol

The Electronic Monitor Panel will activate. Then, the monitor will display the output that is received from the controller. The Controller Service Program is divided into five functions. Each function is listed:

  • Alerting the presence of abnormal engine operation

  • Displaying the machine conditions (engine speed, hydraulic oil temperature, power shift pressure, etc)

  • Displaying the existing electronic problems or the past electronic problems

  • The electronic control components are adjusted and tested.

  • Changes in various defaults in the controller

You should depress the switches on the monitor panel in order to start up the service program or the switches are depressed in order to change the functions. The corresponding switch and/or switches should be depressed until the required function is displayed on the character display.

Start-Up Of The Service Mode




Illustration 2g00662936

Electronic Monitor Panel

(2) Character display

(22) Travel alarm cancel switch

(23) Boom priority mode switch

(24) Swing priority mode switch

(25) Fine control mode switch

(26) User mode switch

Note: The engine can be running or the engine can be stopped, when the "Service Mode" is started. When the engine is stopped, the starter switch must be in the ON position. You should know the procedure to start up the "Service Mode" in advance.

  1. The following switches should be depressed and held for 2 seconds or more simultaneously: travel alarm cancel switch (22), fine control mode switch (25) and user mode switch (26) .

  1. The time display and the dial display on the character display (2) will change to a "0" and a "0". The left character position will flash.

  1. You need to enter the following security code: OE 32 3A.

    Note: The security code must be entered within 10 seconds after the first procedure (1). Otherwise, the time display will return. You should learn the procedure of entering the security code in advance.

  1. The procedure to input information is listed:

    1. The figure that is blinking on the character display (2) can be changed. In order to change the figure, you should depress the boom priority mode switch (23) or the swing priority mode switch (24).

      • The figure that is blinking increases (Boom priority mode switch (23) )

      • The figure that is blinking decreases (Swing priority mode switch (24) )

      The character position that is blinking can be shifted by depressing the fine control mode switch (25) or the user mode switch (26).

      • The character position that is blinking shifts to the right (Fine control mode switch (25) ).

      • The character position that is blinking shifts to the left (User mode switch (26) ).

  1. After you enter the security code, the service mode is activated by depressing and holding the following switches for 2 seconds or greater: travel alarm cancel switch (22), fine control mode switch (25) and user mode switch (26). The service mode is automatically activated 10 seconds after the security code is entered.

  1. Now, the "Service Mode" is activated and the character display (2) will display "10" on the left two character positions and "1" on the right character position.

Note: Refer to the chart of Service Codes for selecting the functions for the "Service Mode".

Changing The Service Mode

  1. The boom priority mode switch (23) or the swing priority mode switch (24) is pressed in order to change the figures that are blinking on character display (2) .

    • The figure that is blinking increases (Boom priority mode switch (23) )

    • The figure that is blinking decreases (Swing priority mode switch (24) )

  1. The position that is blinking on the character display (2) can be shifted by depressing the fine control mode switch (25) and the user mode switch (26) .

    • The position that is blinking shifts to the right (Fine control mode switch (25) )

    • The position that is blinking shifts to the left (Swing priority mode switch (24) )

Note: Refer to the chart of Service Codes for selecting the functions for the "Service Mode".

Table 1
Service Code     Function    
10     Automatic Travel Speed Change    
11     Low Temperature Control    
12     Engine Speed    
13     Engine Coolant Temperature    
14     Hydraulic Oil Temperature    
16     Digital Input    
17     Software Version    
18     Real Time Error Code    
19     Error Log    
1a     Check For The Engine Speed Dial    
1b     Name of Model and Type Of Engine    
1c     Real Time Error Code (ATT)    
1d     Error Log (ATT)    
20     Command Signal For The Power Shift Pressure    
21     Displays Higher Delivery Pressure Of The Main Pumps    
60     Proportional Reducing Valve Sweep Test    
62     ON/OFF Test Of Digital Output    
66     Fixed Power Shift Pressure    
67     Engine Speed Change    
7d     Fan Speed Calibration    
6c     Fan Speed Sweep Test    
71     Proportional Reducing Valve Calibration    
80     Setting Of Hydraulic Oil Type Mineral Or Biological    
81     Setting Of AEC Speed    
82     Setting Of AEC Delay Time    
83     Setting Of Memory Mode    
84     Setting Of Reduced Horsepower For Attachment Pump    
85     Setting Of Engine Speed For Low Idle Switch    
86     Setting Of Pump Quantity For Hammer Mode    
87     Setting Of The Hammer Circuit Pressure    
88     Setting Of Pump Flow For Hammer Mode    
8a     Setting Of Power Offset For Attachment Pump    
8b     Change Of Preset Conditions Of Main Pump Output    
8c     Change Of Upper Limits Of Preset Conditions Of Main Pump Output (Such As Power Mode Or Engine Speed At Dial Position 10)    

Procedure To Stop The Service Mode

Note: One of the following two methods should be used.

  1. Turn the starter switch to the OFF position.

  1. The following switches should be depressed and held simultaneously for 2 second or more:

    (22) Travel alarm cancel switch

    (25) Fine control mode switch

    (26) User mode switch

    The service mode has been stopped, if the character display shows the position of the engine speed dial on the right two character positions and the time is shown on the left four character positions.

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