SEAL-LIP TYPE 1336813 - Caterpillar

Use this procedure if the 591-12 EEPROM checksum fault or ECM not programmed diagnostic code is active.The Integrated Temperature Sensing Module (ITSM) contains no moving parts. Replacement of the ITSM can consume much time. Before you replace an ITSM, follow the troubleshooting procedures in this manual in order to be sure that replacement of the ITSM will correct the problem.Use the following guidelines to verify that the suspect ITSM is the cause of the problem:Install a test ITSM in place of the suspect ITSM. Transfer the software from the suspect ITSM to the test ITSM. Program all the parameters for the test ITSM in order to match the parameters of the suspect ITSM. The parameters must match. Refer to the following steps for details on programming the parameters.If the test ITSM resolves the problem, reconnect the suspect ITSM. Verify that the problem recurs. If the problem recurs, replace the suspect ITSM with the test ITSM.Use the following procedure to replace the ITSM:The location of the ITSM depends on the configuration of the control system. The ITSM is located in one of the following locations:
The left rear corner of the engine
Inside of the terminal boxThis replacement procedure applies to either location.Note: If the parameters cannot be read from the suspect ITSM, the parameters must be obtained from records or from the factory.
Use the "Service/Copy Configuration/ECM Replacement" function of Caterpillar Electronic Technician (ET) in order to transfer the software from the suspect ITSM. You may also select the "Print" function in order to obtain a paper copy of the parameter settings.Note: Before you replace an ITSM, record all of the logged events.
Connect Cat ET with the communications adapter. Select "Service/Copy Configuration/ECM Replacement" from the drop-down menu. Cat ET will load the configuration parameters and the monitoring parameters from the Electronic Control Module (ECM).
Select "Load from ECM" in the lower left corner of the screen. Select the suspect ITSM and select "OK". After the loading is complete, Cat ET will display this message: "The data has been successfully loaded from the ECM". Select "OK".
Select "File/Disconnect F8" from the drop-down menu. Note: Do not exit from Cat ET.
Replace the ITSM.
Set the engine control to the OFF/RESET mode.
Illustration 1 g01054206
Power distribution box
(1) 35 amp circuit breaker
Switch 35 amp circuit breaker (1) to the OFF position.
Illustration 2 g01064840
Rear view
(2) Connector for the harness to the thermocouples
(3) Connector for the harness to the ITSM
Disconnect connectors (2) and (3) from the ITSM.
Illustration 3 g01064841
Mounting hardware for the ITSM
(4) Nut
(5) Ground strap
(6) Washer
(7) Mounting flange on the ITSM
Remove four nuts (4) and washers (6) from mounting flanges (7) of the ITSM. Ground strap (5) must also be lifted from one of the studs.
Remove the ITSM from the engine.
Install the replacement ITSM. Orient the 54-pin connector toward the bottom of the engine.
Use the mounting hardware to install the new ITSM. Be sure to install ground strap (5) between one of the washers on the mounting flange and the nut. Note: One of the washers is a lock washer. Be sure to