SHEET AS 2716081 - Caterpillar

Illustration 1 g00849532
Test Step 1. Check for Connector Damage
Turn the engine control to the OFF position.
Thoroughly inspect the ECM connector J1/P1. 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, abrasion, corrosion and incorrect attachment.Results:
OK - The connectors and wiring are okay. 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 Fuel Position Multiplier.
Disconnect main power.
Disconnect the customer supplied fuel position multiplier.
Connect a throttle position sensor to the wiring in order to simulate the signal from the Fuel Position Multiplier. Ensure that the sensor will generate a 500 Hz PWM signal. The sensor should generate an identical signal as the attachment for the torque limit on the locomotive. Connect the sensor directly to the wiring that sends the PWM signal to the ECM.Note: Remember to remove the sensor when the test is complete. Remember to reconnect the Fuel Position Multiplier.
Connect the ET to the service tool connector.
Connect main power.
Observe the fuel position multiplier on the ET.
Adjust