G3516B Engines Caterpillar

• The output for the fuel control relay is ON.

• The Electronic Control Module (ECM) detects excessive current on the output for the fuel control relay.

Note: This condition cannot be detected by the ECM when the output for the fuel control relay is OFF. The output is normally OFF when the engine control is in the OFF/RESET mode.

System Response:

The ECM will continue attempting to energize the relay. The engine may shut down due to a lack of fuel. The alarm output is activated. The code is logged.

Possible Performance Effect:

The engine will not start due to the lack of fuel.

Troubleshooting:

The condition is probably caused by a short circuit in the harness or by an internal short circuit in the fuel control relay.

Test Step 1. Perform the following diagnostic procedure: "ECM Output Circuit (Fuel Control)"

Results:

• OK - STOP