Figure 1.1 – Engine Warning (Instrument Panel)

Troubleshooting Fault Code 0254 (Red Lamp – Stop/Shutdown Engine)

Step 1: Connect to Cummins INSITE

1. Open Cummins INSITE software.
2. Connect the adapter to the engine’s diagnostic port.

Step 2: Check Fault Codes

1. Open the Fault Codes window on the Viewbar.
2. Check the Active Codes status.

Figure 1.2 – Fault Codes

Identifying the Issue

• Fault Code 0254 is active.
• The warning lamp is red, indicating a stop/shutdown engine condition.
• Double-clicking on Fault Code 0254 will display an overview.
• Read more: SPN 632 – FMI 4 (Fault Code 0254).

Figure 1.3 – Fault Code 0254 Active (Lamp: Red)

Figure 1.4 – Fault Code 0254 (Overview)

Step 3: Inspect the Fuel Shutoff Valve Solenoid

Figure 1.5 – Fuel Shutoff Valve Solenoid

a) Check for Corrosion

• Inspect the solenoid post for corrosion.
• Result: No corrosion found.

b) Check Supply Voltage

Condition:

• Disconnect the actuator harness from the Fuel Shutoff Valve Solenoid.
• Turn the keyswitch ON.

Action:

• Measure voltage from the fuel shutoff control wire connector (harness side) to the engine block ground.
• Results:
  • Without actuator harness connected: 21.56 VDC (OK).
  • With actuator harness connected: 3.6 VDC (Not OK – Indicates a short circuit).
  • Expected: Voltage should remain 21.56 VDC when harness is connected.

c) Inspect Actuator Harness and ECM Connector Pins

Conditions:

• Turn the keyswitch OFF.
• Disconnect the actuator harness connector from the ECM.

Action:

• Check for:
  • Loose connectors
  • Corroded, bent, broken, pushed-back, or expanded pins
  • Moisture, dirt, or debris in connectors
  • Missing or damaged connector seals
  • Broken connector shell
  • Wire insulation damage

d) Check for Open Circuit

Conditions:

• Turn the keyswitch OFF.
• Disconnect the actuator harness from the Fuel Shutoff Valve Solenoid.
• Disconnect the actuator harness connector from the ECM.

Action:

• Measure resistance from pin 33 of the actuator harness to the fuel shutoff control wire.
• Expected result: Less than 10 ohms (OK).

e) Check for Short Circuit (Pin to Pin)

Conditions:

• Turn the keyswitch OFF.
• Disconnect the actuator harness from the Fuel Shutoff Valve Solenoid.
• Disconnect the actuator harness connector from the ECM.

Action:

• Measure resistance from pin 33 of the actuator harness connector to all other pins.
• Expected result: More than 100k ohms (OK).

f) Measure Voltage from ECM

Conditions:

• Disconnect the actuator harness connector from the ECM.
• Turn the keyswitch ON.

Action:

• Measure voltage from pin 33 of the actuator harness connector to engine block ground.
• Result: 21.56 VDC (OK).

g) Check Fuel Shutoff Valve Solenoid Resistance

Conditions:

• Turn the keyswitch OFF.
• Disconnect the actuator harness from the Fuel Shutoff Valve Solenoid.

Action:

• Measure resistance from the Fuel Shutoff Valve Solenoid to engine block ground.
• Expected values:
  • 6-15 ohms for 12-VDC solenoids.
  • Measured actual: 6-8 ohms (Not OK).

h) Replace the Fuel Shutoff Valve Solenoid

• Replace with P/N 3408421.

Figure 1.6 – Solenoid (3408421)

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