MODULE GP-CAB WIRING 4897847 - Caterpillar

Turn the local/remote switch on the control panel to the OFF/RESET position. A strong electrical shock hazard is present if power is not removed from the ECM.
Disconnect the connectors for the suspect injector or injectors.
Turn the local/remote switch on the control panel to the LOCAL position.Note: This test will help the service technician verify that the ECM can fire the solenoids. Do not try to crank the engine during this test. The ECM will terminate the "Injector Solenoid Test".
Perform the "Injector Solenoid Test" at least two times.Expected Result:All of the suspect cylinders indicate "Open" on Cat ET.Results:
OK - All cylinders indicate "Open" on Cat ET. The harness between the ECM and the injector connector does not have a short circuit. Proceed to Test Step 9.
Not OK - One or more cylinders indicate "Short" on Cat ET. Note the cylinders that indicate "Short". Proceed to Test Step 6.Test Step 6. Check the Harness between the ECM and the Connector for the Rail for a Short Circuit
This engine uses high voltage to control the fuel injectors.Disconnect electronic fuel injector enable circuit connector to prevent personal injury.Do not come in contact with the fuel injector terminals while the engine is running.
Turn the local/remote switch on the control panel to the OFF/RESET position. A strong electrical shock hazard is present if power is not removed from the ECM.
Disconnect the connector for the rail for the suspect injector or injectors.
Turn the local/remote switch on the control panel to the LOCAL position.Note: This test will help the service technician verify that the ECM can fire the solenoids. Do not try to crank the engine during this test. The ECM will terminate the "Injector Solenoid Test".
Perform the "Injector Solenoid Test" at least two times.Expected Result:All of the suspect cylinders indicate "Open" on Cat ET.Results:
OK - All cylinders indicate "Open" on Cat ET. The harness between the ECM and the connector for the rail does not have a short circuit.Repair: The harness between the connector for the rail and the suspect injector connector has a short circuit. Repair the harness or the connector.STOP
Not OK - One or more cylinders indicate "Short" on Cat ET. Note the cylinders that indicate "Short". Proceed to Test Step 8.Test Step 7. Check the Harness between ECM and the Connector for the Rail for an Open Circuit
This engine uses high voltage to control the fuel injectors.Disconnect electronic fuel injector enable circuit connector to prevent personal injury.Do not come in contact with the fuel injector terminals while the engine is running.
Turn the local/remote switch on the control panel to the OFF/RESET position.
Disconnect the connector for the rail.
Fabricate a jumper wire 100 mm (4 inch) long with Deutsch pins on both ends of the wire.
Insert one end of the jumper wire into the socket for the suspect injector supply wire. Insert the other end of the jumper wire into the socket for the suspect injector return wire. Install the wire jumper at the connector for the rail. The jumper wire will replace the