CONNECTOR AS 8E6753 - Caterpillar

System Operation Description:The diagnostic code that is listed in Table 1 is for the in-line engines. The diagnostic codes that are listed in Table 2 are for the vee engines.
Table 1
Diagnostic Codes Table    
Code    Conditions which Generate this Code    System Response    
1040-9 ICSM #1 : Abnormal Update Rate     The Electronic Control Module (ECM) and the ICSM have been powered for at least five seconds and the ICSM is not communicating on the data link.     The shutdown output is activated. The code is logged.
The engine is shut down.    
Table 2
Diagnostic Codes Table    
Code    Conditions which Generate this Code    System Response    
1040-9 ICSM #1 : Abnormal Update Rate     The ECM and the ICSM(s) have been powered for at least five seconds and the left side ICSM did not receive ten consecutive messages from the right side ICSM.     The shutdown output is activated. The code is logged.
The engine is shut down.    
1041-9 ICSM #2 : Abnormal Update Rate     The ECM and the ICSM(s) have been powered for at least five seconds and the right side ICSM did not receive ten consecutive messages from the left side ICSM.    An ICSM monitors the combustion sensors and the thermocouples on the engine. The in-line engines have one ICSM and the vee engines have two ICSM(s). The vee engines have one ICSM for each bank of cylinders. Each ICSM performs calculations in order to optimize the engine's operation. Each ICSM broadcasts the following information:
Fuel correction factor
Actual combustion burn time for each cylinder
Average combustion burn time for each bank of cylinders
Actual exhaust port temperature of each cylinder
Average exhaust port temperature for each bank of cylinders
The temperature of the exhaust at the inlet and at the outlet of each turbochargerInformation from an ICSM travels across the Cat Data Link. The ICSM must be programmed in order to communicate across the Cat Data Link. The Cat Data Link must be in good condition so that the ICSM can transmit the information. An ICSM may be able to communicate with Caterpillar Electronic Technician (ET) even though communication with the ECM is not possible.The diagnostic code is probably caused by a problem with an electrical connector. The next likely cause is a problem with the wiring. The least likely cause is a problem with the ICSM.Logged diagnostic codes provide a historical record. Before you begin this procedure, use Cat ET to print the logged codes to a file.This troubleshooting procedure may generate additional diagnostic codes. Keep your mind on correcting the cause of the original diagnostic code. Clear the diagnostic codes after the problem is resolved.
Illustration 1 g01443510
Schematic of the Cat Data Link for the ICSM(s) on the in-line engines and on the vee enginesTest Step 1. Inspect the Electrical Connectors and Wiring
Illustration 2 g01431198
Terminal Box (1) ECM connector J2/P2 (2) ECM connector J1/P1 (3) 16 amp circuit breaker (4) Connectors J3/P3 for the customer's connector (5) Connectors J4/P4 for the optional control panel (if equipped)