Caterpillar Monitoring System for Electronic Modular Control Panel Caterpillar

The initialization is an internal process within the main display module. During the initialization, the main display module listens to the CAT data link and the harness code inputs. From this information, the module learns about the engine.

Normally, the initialization occurs when the main display module is replaced. Also, the initialization occurs when there is a change in the harness code. However, when a previously used main display module is used as a replacement, initialization could be necessary. Faults that can not be explained with the CAT data link can occur if the main display module is not initialized correctly. The service person must activate the initialization when the main display module has been previously used. Initialization is used if the module was taken out of an application that had the same engine code as the main display module that is to be removed.

Procedure For Initialization

This procedure causes the initialization to occur on any main display module. Initialization requires that the main display module be powered up with a valid harness code that is different than the harness code when it was last powered down. For a list of valid harness codes that are covered by this manual, see the following tables.

Table 1

Caterpillar Monitoring System Harness Code For 3412 MUI And 3412 PEEC Engines Using EMCP II and EMCPII+ (Engine Code 2)
Main Display Module Connector Contact	Harness Code	Type
31	0	Ground
3	1	Open
12	2	Ground
22	3	Ground
16	4	Ground
6	5	Ground

Table 2

Caterpillar Monitoring System Harness Code For 3500 MUI Engines Using EMCP II and EMCPII+ (Engine Code 15)
Main Display Module Connector Contact	Harness Code	Type
31	0	Open
3	1	Open
12	2	Open
22	3	Open
16	4	Ground
6	5	Ground

Table 3

Caterpillar Monitoring System Harness Code For 3500B MUI Engines Using EMCP II and EMCPII+ (Engine Code 16)
Main Display Module Connector Contact	Harness Code	Type
31	0	Ground
3	1	Ground
12	2	Ground
22	3	Ground
16	4	Open
6	5	Ground

1. Code input configuration.

   1. Turn the key start switch to the OFF/RESET position.

   2. Determine whether the harness code inputs are hard wired in the engine harness or accessible at a harness code plug. Use the Electrical System Schematic in the Service Manual for the engine.

      Expected Result: There is a harness code plug.

      Results:

      • YES - There is a harness code plug. Remove the harness code plug. Proceed to 3.

      • NO - The harness code inputs are hard wired in the engine harness. Proceed to 2.

2. Hard wired procedure.

   1. Disconnect the engine harness from the main display module.

   2. At the engine harness connector for the main display module, remove the wire for one of the following contacts (3, 6, 12, 16, 22 or 31). Choose one that is connected to ground.

   3. With tape, secure the removed connector contact out of the way.

   4. Reconnect the engine harness to the main display.

      Results:

      • CONTINUE - Proceed to 3.

3. Reconnection and verification.

   1. Turn the ECS to the COOLDOWN/STOP position.

   2. Various indicators in the Caterpillar Monitoring System display area will illuminate. Wait 10 seconds.

   3. Turn the ECS to the OFF position.

   4. Depending on the previous procedure that was performed, either reinstall the harness code plug (from "Code input configuration") or reinstall the ground connector contact (from "Hard wired procedure").

   5. Turn the ECS to the COOLDOWN/STOP position. Make sure the main display module successfully completes the self test, see Testing and Adjusting, "System Self Test".

   6. Check the engine code. See System Operation, "Harness Code Mode".

      Expected Result: The display module has successfully completed the self test.

      Results:

      • OK - The display module successfully completed the self test. STOP.

      • NOT OK - The display module did not complete the self test. Exit this procedure. Determine the cause of the failure and repeat "Initialization". STOP.