Electronic Modular Control Panel II+ (EMCP II+) Caterpillar

Illustration 1	g00792894
Display Area Of The GSC+ (1) Dedicated shutdown indicators (2) Spare fault indicators (3) Fault shutdown indicator (4) Fault alarm indicator (5) Upper display (6) Lower display (7) Keypad

Service Mode is used for the following purposes:

• Assist with troubleshooting of diagnostic faults.

• Satisfy special applications.

• Satisfy customer needs.

• Verify the functions of the generator set.

• Calibrate or adjust the functions of the generator set.

Service Mode has options that can be selected. Service personnel use the options to obtain information about the generator set, and the operator can program functions of the generator set.

The keypad and the display of the GSC+ are used for activating Service Mode and selecting the desired option. In Service Mode, the keys on the keypad have different functions, and the keys on the keypad have different names. The preceding illustration shows the name of each key in Service Mode. Also, there is a film (label) on the door of the control panel that identifies each key. The service functions of the keys are listed below.

Scroll Right Key - This key is used to scroll right information. When you are entering the password, this key represents the number 1.

Scroll Up Key - This key is used to scroll up information or this key is used to increase the value of information. When you are entering the password this key represents the number 2.

Scroll Down Key - This key is used to scroll down through information or this key is used to decrease the value of information. When you are entering the password, this key represents the number 3.

Note: The appropriate "Scroll" Key should be held down in order to rapidly scroll through a large range of information.

Select Key - To view an option, use the Select Key. To change an option, use the Select Key. To start the scrolling of information, use the Select Key.

Enter Key - This key is used to enter information that has been changed into the memory of the GSC+.

Exit Key - This key is used to exit Service Mode. The display now returns to Normal Mode. The "SERV" indicator on the upper display is NOT SHOWING when the GSC+ is NOT in Service Mode.

Service Mode Key - This key is used to enter Service Mode. The "SERV" indicator on the upper display FLASHES when the GSC+ is in Service Mode. The "SERV" indicator on the upper display FLASHES when the keypad performs functions in the Service Mode.

Procedure To Enter Service Mode

Note: Any active shutdown fault must be made inactive in order to access Service Mode. A FLASHING shutdown indicator means that a shutdown fault exists. To temporarily change a shutdown fault from an active shutdown fault to an inactive shutdown fault, turn the ECS to the OFF/RESET position. To permanently change a shutdown fault from an active shutdown fault to an inactive shutdown fault, the fault must not be occurring. Also, the ECS must be turned to the OFF/RESET position. If the jumper from terminal 6 to terminal 9 is not installed on the ECS, then the GSC+ will not power up in OFF/RESET and any active shutdown fault must be corrected before entering Service Mode.

Note: Service Mode cannot be entered when the ECS is in the AUTO position.

1. Press the "SERVICE MODE" key on the keypad of the GSC+. The "SERV" indicator on the upper display FLASHES whenever the GSC+ is in Service Mode.

2. The desired option (OP1 through OP10) can now be selected. Each option is described in the topics that follow.

3. To return to Normal Mode, press the "EXIT" key a few times until the "SERV" indicator is not showing.

Note: To enter options OP4 through OP8 of the Service Mode, the engine must be shut down. Turn the ECS to the STOP position.

Options OP4 through OP10 of the Service Mode require a password. The password entry reduces the possibility of mistakenly changing information. OP3 is the option that is used for the password entry. The password must be correctly entered before access is gained to OP4 through OP10. See Systems Operation, "Password Entry OP3". Option OP1 and option OP2 are used for viewing information. Option OP1 and option OP2 are not protected with passwords.