PLUG-PIPE 6L2286 - Caterpillar

System Operation Description:The CAT Data Link is used for communication between electronic modules. The CAT Data Link is used to communicate information from the ECM to the Caterpillar Monitoring System. The CAT Data Link is used for programming and troubleshooting the ECM.The ECM communicates with the Caterpillar Monitoring System in order to share engine information and electronic system diagnostics. The ECM communicates with the ET in order to share status and diagnostic information. The 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 ET.The 3500B engine can be FLASH downloaded over the CAT Data Link.
Illustration 1 g00629913
Test Step 1. Check for Connector Damage.
Turn the circuit breaker for the battery to the OFF position.
Turn the ECS to the OFF/RESET position.
Check the connectors and wiring for the following problems: damage, corrosion, abrasion and incorrect attachment.Expected Result:The connectors and wiring should be free of the following problems: damage, corrosion, abrasion and incorrect attachment.Results:
OK - Proceed to test step 2.
Not OK - Repair: Repair the connector and/or wiring or replace the connector and/or wiring. Stop.Test Step 2. Check the CAT Data Link.
Turn the ECS to the OFF/RESET position.
Connect the ET.
Turn the circuit breaker for the battery to the ON position.
Turn the ECS to the STOP position.
Check for any LOGGED diagnostic codes.
Start the engine and read the Status Information on the ET.
Observe the engine oil pressure and the coolant temperature on the Caterpillar Monitoring System.Note: If some of the parameters, but not all of the parameters were displayed, the CAT Data Link is OK. Check the component that is associated with any missing parameter.Expected Result:The ET should display the Status Information. The Caterpillar Monitoring System should display engine parameters.Results:
OK - The CAT Data Link is operating correctly at this time. Stop.
No Parameter Displayed - There is a problem with the CAT Data Link. Proceed to test step 3.
Service Tool Did Not Power ON - The ET or the Communication Adapter did not power up. Proceed to test step 4.Test Step 3. Check Communication With the ET and the Communication Adapter.
Turn the ECS to the OFF/RESET position.
Reconnect ECM connectors J1/P1 and J2/P2.
Disconnect J3C/P3C.
Connect the ET.
Turn the ECS to the STOP position.
Read LOGGED Diagnostics and Status Information on the ET.Expected Result:Status Information appears on the ET.Results:
OK - Proceed to test step 5.
Not OK - Proceed to test step 6.Test Step 4. Check Battery Voltage.
Turn the ECS to the OFF/RESET position.
Ensure that all connectors are connected.
Turn the ECS to the STOP position.
Measure the voltage between pin A and pin B at J60.Expected Result:The voltage should be 20 to 28 VDC.Results:
OK - The voltage is OK. Proceed to test step G.
Not OK - There is a problem in the harness or electrical power supply.Repair: Repair the connector and/or wiring or replace the connector and/or wiring. Stop.Test Step 5. Check For Shorts in the Harness
Turn the ECS to the OFF/RESET position.
Disconnect the ECM connectors J1/P1 and J2/P2. Disconnect the service tool