KEY-CRANKSHAFT 9N6677 - Caterpillar

The EIS control module contains no moving parts. Replacement of a control module can consume much time. Before you replace a control module, follow the troubleshooting procedures in this manual in order to be sure that replacement of the module will correct the problem.Verify that the control module is the cause of the problem. Install a module that is known to be good in place of the suspect module. Program all the parameters for the good module in order to match the parameters of the suspect module. The parameters must match. Refer to the following test steps for details on programming the parameters.If the good module resolves the problem, reconnect the suspect control module. Verify that the problem recurs. If the problem recurs, replace the suspect module with the good module.Either the Digital Diagnostic Tool (DDT) or the Caterpillar Electronic Technician (ET) may be used to program the parameters. Refer to Tool Operating Manual, SEHS8806 for details on using the DDT. For Cat ET, refer to the instructions that are provided with the software.Note: If the parameters cannot be read from the suspect module, the parameters must be obtained from records or from the factory.Perform the following procedure to replace the control module.Note: Before you replace the control module, record all of the diagnostic codes.
Copy the values for all of the parameters from the suspect module.
Use the "Service/Copy Configuration/ECM Replacement" function of the Caterpillar Electronic Technician (ET).Save the file. You can select "Load from ECM". You may also select the "Print" function in order to obtain a paper copy of the parameter settings.You may also record the values of the parameters onto paper. Refer to Troubleshooting, "Customer Specified Parameters Worksheet".
Replace the EIS control module.
Set the engine control to the OFF/RESET mode.
Remove the electrical power from the engine.
Illustration 1 g01045438
EIS control module (1) Mounting bolt (2) Ground strap (3) EIS connector
Disconnect the EIS connector (3) .Note: The control module will fall when the last bolt is removed. Be sure to support the control module before you remove the last bolt.Note: Rubber grommets behind the control module are held in place by the bolts. The grommets help to reduce vibration. The grommets may fall when the control module is removed. Be sure not to lose the grommets.
Remove bolts (1) .
Remove the control module from the engine.
Install the replacement control module.
Use the mounting hardware to install the new ECM. Use a bolt to fasten ground strap (2) to the control module. Then install the other three bolts.Check the mounting hardware and the control module for correct installation. A correctly installed control module will move slightly on the rubber grommets. If the module cannot move slightly on the grommets, check that the grommets are positioned correctly.
Connect EIS connector (3) .
Program the configuration parameters into the replacement control module. If you are using a DDT, manually enter the values for each parameter.Note: All of the parameters must be reprogrammed even if the values for the parameters appear to be correct. If a parameter has