SEAL-RING 1237265 - Caterpillar

System Operation Description:The CAT Data Link is used for communication between electronic modules. The Electronic Control Module (ECM) communicates with an Caterpillar Electronic Technician (ET) in order to share information about the engine system and any diagnostic codes that may be active. The CAT Data Link is used for programming and troubleshooting the engine ECM. The Cat ET can also be used to configure the ECM parameters on the engine. This information will not be available if communications fail between the ECM and the Cat ET.
Illustration 1 g00860752
Typical exampleTest Step 1. Check for Connector Damage.
Turn circuit breaker "CB-8" to the OFF position.
Thoroughly inspect the ECM connectors J1/P1 and J2/P2. Inspect all of the other connectors. Refer to Troubleshooting, "Inspecting Electrical Connectors" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque of 6.0 N m (55 lb in).
Check the customer connector (allen head screw) for the proper torque of 2.25 0.25 N m (20 2 lb in).
Check the harness and the wiring for abrasion and pinch points.Expected Result:The connectors and wiring should be free of the following problems: damage, corrosion, abrasion and incorrect attachment.Results:
OK - The connectors and wiring are okay. Proceed to test step 2.
Not OK - The connectors and/or wiring are not okay.Repair: Repair the connector and/or wiring or replace the connector and/or wiring. Stop.Test Step 2. Check the CAT Data Link.
Start the Cat ET.
Turn circuit breaker "CB-8" to the ON position.
Check for any LOGGED diagnostic codes.
Start the engine and read the status information on the Cat ET.
Observe the engine oil pressure and the coolant temperature on the Cat ET.Note: If some of the parameters, but not all of the parameters were displayed, the CAT Data Link is okay. Check the component that is associated with any missing parameter.
Stop the engine.Expected Result:The Cat ET should display the status information.Results:
OK - The CAT Data Link is operating correctly at this time.Repair: Check the system for any diagnostic codes. Stop.
No Parameter Displayed. - There is a problem with the CAT Data Link. Proceed to test step 4.
Service Tool Did Not Power Up. - The Cat ET or the Communication Adapter did not power up. Proceed to test step 3.Test Step 3. Check for the Battery Voltage.
Turn circuit breaker "CB-8" to the OFF position.
Disconnect the Cat ET from the service tool connector J60.
Turn circuit breaker "CB-8" to the ON position.
Measure the voltage between pin A and pin B at J60.
Turn circuit breaker "CB-8" to the OFF position.
Reconnect the Cat ET to the service tool connector J60.Expected Result:The voltage should be 24 3 VDC.Results:
OK - The voltage is 24 3 VDC. Proceed to test step 4.
Not OK - The voltage is not 24 3 VDC. There is a problem in the harness or electrical power supply.Repair: Verify that circuit breaker "CB-8" is not tripped. Perform the diagnostic functional test Troubleshooting, "Electrical Power