PUMP GP-FUEL INJECTION 1365955 - 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 Electronic Control Module (ECM) to the Electronic Monitoring System (EMS). The CAT Data Link is used for programming and troubleshooting the ECM.The ECM communicates with the EMS in order to share engine information and diagnostics that may affect engine operation.The ECM communicates with the Caterpillar Electronic Technician (ET) in order to share status and diagnostic information. 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 g00977405
Typical schematic
Test Step 1. Check for Connector Damage.
Turn the circuit breaker for the battery to the OFF position.
Thoroughly inspect the ECM connectors J1/P1 and J2/P2. Inspect all of the other connectors. Refer to the diagnostic functional test 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 2.25 0.25 N m (20 2 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 for pinch points. Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring should be free of corrosion, of abrasion or of pinch points.Results:
OK - The connectors and wiring are okay. Proceed to Test Step 2.
Not OK - The connectors and/or wiring need repair.Repair: Repair the connectors and/or wiring or replace the connectors and/or wiring.STOPTest Step 2. Verify the Problem.
Turn the circuit breaker for the battery to the ON position.
Turn the ECS to the STOP position. The engine should be OFF.
Determine if the EMS displays a random error message or if the EMS displays a CID-FMI 248-12 CAT Data Link malfunction diagnostic code.
Determine if the tachometer for the EMS displays a random EE message.
The Engine Vision Display shows intermittent error messages under the gauges. The diagnostic screen for the Engine Vision Display does not function properly. The screen for maintenance for the Engine Vision Display does not function properly. A response of "Waiting For ECM" is displayed. Expected Result:The EMS displays any of the following errors:
Random error messages
A logged CID-FMI 248-12 CAT Data Link malfunction diagnostic codeResults:
OK - The problem may be in the ECM or in the EMS. Proceed to Test Step 4.
Not OK - The problem is NOT in the ECM or in the EMS display. Proceed to Test Step 3.Test Step 3. Install a Data Booster.
Turn the ECS to the OFF position.
Install a 143-4518 Data Booster on the engine's primary ECM. Refer to the engine schematic for more information.
Turn the ECS to the STOP position. The engine should be OFF.
Determine if the display module is working properly with the 143-4518 Data