FAULT CODE 254 Fuel Shutoff Valve Solenoid Supply Circuit View Related Topic Overview CODE Fault Code: 254 PID: S017 SPN: 632 FMI: 4/4 LAMP: Red SRT: REASON Less than (+) 6 VDC detected at fuel shutoff circuit or an excessive current draw from the electronic control module (ECM) or faulty ECM output circuit. EFFECT The ECM turns off the fuel shutoff supply voltage. The engine will shut down. Circuit Description The fuel shutoff valve solenoid is a device used by the ECM to control the engine fuel supply. The ECM can shut down the engine by cutting off the power to the fuel shutoff valve solenoid. Component Location The fuel shutoff valve solenoid is located on the fuel delivery housing above the fuel filter. Shop Talk Inspect the fuel shutoff supply circuit for external wires that can be spliced in to power another device. Remove any extra wires that are found in the circuit. If there is an external shutdown system on the vehicle that uses the fuel shutoff valve for engine shutdown, make sure it has not failed and pulled down the voltage on the fuel shutoff circuit. Inspect the engine-block-to-chassis ground wire to make sure it is securely fastened to a clean, dry, conductive surface. Check the starter solenoid (+) terminal for a loose connector or accessory wiring with damaged insulation. Cautions and Warnings CAUTION To reduce the possibility of damaging the new ECM, all other active fault codes must be investigated prior to replacing the ECM. CAUTION To reduce the possibility of pin and harness damage, use the following test leads when taking a measurement: Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead Part Number 3822917 - female Deutsch/AMP/Metri-Pack test lead. CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822917 - female Deutsch/AMP/Metri-Pack test lead. Troubleshooting Steps STEPS STEP 1. SPECIFICATIONS Check the fuel shutoff valve solenoid. STEP 1A. Check for extra wires on the fuel shutoff valve solenoid post. No extra wires STEP 1B. Check for corrosion on the solenoid post. No corrosion found STEP 1C. Check the supply voltage at the fuel shutoff valve solenoid. More than (+) 6 VDC STEP 1C-1. Check the actuator harness STEPS SPECIFICATIONS and the ECM connector pins. STEP 1C-2. Check for an open circuit. STEP 1C-3. Check for a short circuit from pin to pin. STEP 1C-4. Measure the voltage from the ECM. STEP 1D. Check the fuel shutoff valve solenoid resistance. 1 to 5 ohms for 6-VDC solenoids, 6 to 15 ohms for 12-VDC solenoids, 24 to 50 ohms for 24VDC solenoids, 42 to 80 ohms for 32-VDC solenoids, 46 to 87 ohms for 36-VDC solenoids, 92 to 145 ohms for 48-VDC solenoids, 315 to 375 ohms for 74-VDC solenoids, 645 to 735 ohms for 115-VAC solenoids Clear the fault codes. STEP 2. STEP 2A. Disable the fault code. Fault Code 254 inactive STEP 2B. Clear the inactive fault codes. All fault codes cleared Guided Step 1 - Check the fuel shutoff valve solenoid. Guided Step 1A - Check for extra wires on the fuel shutoff valve solenoid post. Conditions Turn keyswitch OFF. Action Check for extra wires. Check for extra wires on the fuel shutoff valve solenoid post. OK NOT OK No extra wires Remove extra wires and connect to (+) 12-VDC supply Go to 1B Go to 2A Guided Step 1B - Check for corrosion on the solenoid post. Conditions Turn keyswitch OFF. Disconnect the fuel shutoff control wire from the fuel shutoff valve solenoid. Action Check for corrosion. Check for corrosion on the solenoid post. OK NOT OK No corrosion found Clean the solenoid post and the wiring terminal Refer to Procedure 019-050. Go to 1C Go to 2A Guided Step 1C - Check the supply voltage at the fuel shutoff valve solenoid. CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead. CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822917 - female Deutsch/AMP/Metri-Pack test lead. Conditions Disconnect the actuator harness from the fuel shutoff valve solenoid. Turn keyswitch ON. Action Check the supply voltage at the fuel shutoff valve solenoid. Measure the voltage from the fuel shutoff control wire connectors on the harness side to engine block ground. OK NOT OK More than (+) 6 VDC Does not meet specifications Go to 1D Go to 1C-1 Guided Step 1C-1 - Check the actuator harness and the ECM connector pins. CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. Conditions Turn keyswitch OFF. Disconnect the actuator harness connector from the ECM. Action Check the actuator harness and the ECM connector pins for the following: Loose connector Corroded pins Bent or broken pins Pushed back or expanded pins Moisture in or on the connector Dirt or debris in or on the connector pins Missing or damaged connector seals Wire insulation damage Connector shell broken. For general inspection techniques, refer to Component Connector and Pin Inspection, Procedure 019-361. OK NOT OK No damaged pins Repair the damaged pins Repair or replace the engine harness, or replace the ECM, whichever has the damaged pins. Go to 1C-2 Guided Step 1C-2 - Check for an open circuit. Flush the dirt, debris, or moisture from the connector pins using the electrical contact cleaner, Part Number 3824510. Install the appropriate connector seal if it is damaged or missing. Repair the engine harness. Refer to Procedure 019-204. Replace the engine harness. Refer to Procedure 019-043. Replace the ECM. Refer to Procedure 019-031. Go to 2A CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead. Conditions Turn keyswitch OFF. Disconnect the actuator harness from the fuel shutoff valve solenoid. Disconnect the actuator harness connector from the ECM. Action Check for an open circuit. Measure the resistance from pin 33 of the actuator harness to the fuel shutoff control wire. For general resistance measurement techniques, refer to Resistance Measurements Using a Multimeter and Wiring Diagram, Procedure 019-360. OK NOT OK Less than 10 ohms Repair or replace the engine harness Repair the engine harness. Refer to Procedure 019-204. Replace the engine harness. Refer to Procedure 019-043. Go to 1C-3 Go to 2A Guided Step 1C-3 - Check for a short circuit from pin to pin. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead. Conditions Turn keyswitch OFF. Disconnect the actuator harness from the fuel shutoff valve solenoid. Disconnect the actuator harness connector from the ECM. Action Check for a short circuit from pin to pin. Measure the resistance from pin 33 of the actuator harness connector to all other pins in the connector. For general resistance measurement techniques, refer to Resistance Measurements Using a Multimeter and Wiring Diagram, Procedure 019-360. OK NOT OK More than 100k ohms Repair or replace the engine harness Repair the engine harness. Refer to Procedure 019-204. Replace the engine harness. Refer to Procedure 019-043. Go to 1C-4 Go to 2A Guided Step 1C-4 - Measure the voltage from the ECM. CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. CAUTION To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: Part Number 3822917 - female Deutsch/AMP/Metri-Pack test lead. Conditions Disconnect the actuator harness connector from the ECM. Turn keyswitch ON. Action Measure the voltage from the ECM. Measure the voltage at the ECM from pin 33 of the actuator harness connector port to engine block ground. OK NOT OK More than (+) 6 VDC Replace the ECM Repair or replace the engine harness. Refer to Procedure 019-031. Repair the engine harness. Refer to Procedure 019-204. Replace the engine harness. Refer to Procedure 019-043. Go to 2A Go to 2A Guided Step 1D - Check the fuel shutoff valve solenoid resistance. CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. Conditions Turn keyswitch OFF. Disconnect the actuator harness from the fuel shutoff valve solenoid. Action Check the fuel shutoff valve solenoid resistance. Measure the resistance from the fuel shutoff valve solenoid to engine block ground. OK NOT OK 1 to 5 ohms for 6-VDC solenoids Replace the fuel shutoff valve solenoid 6 to 15 ohms for 12-VDC solenoids Refer to Procedure 019-050. 24 to 50 ohms for 24-VDC solenoids 42 to 80 ohms for 32-VDC solenoids 46 to 87 ohms for 36-VDC solenoids 92 to 145 ohms for 48-VDC solenoids 315 to 375 ohms for 74-VDC solenoids 645 to 735 ohms for 115-VAC solenoids Go to 2A Guided Step 2 - Clear the fault codes. Guided Step 2A - Disable the fault code. Conditions Connect all components. Turn keyswitch ON. Go to 2A Action Disable the fault code. Start the engine and let it idle for one minute. Use INSITE™ electronic service tool to verify Fault Code 254 is inactive. OK NOT OK Fault Code 254 inactive Return to the troubleshooting steps or contact a local Cummins Authorized Repair Location if all the steps have been completed and rechecked. Go to 2B Go to 1A Guided Step 2B - Clear the inactive fault codes. Conditions Connect all components. Turn keyswitch ON. Action Clear the inactive fault codes. Use INSITE™ electronic service tool to erase the inactive fault codes. OK NOT OK All fault codes cleared Troubleshoot any remaining active fault codes. Repair complete Last Modified: 01-Feb-2005 Copyright© 2005 Cummins, Inc. All rights reserved Appropriate troubleshooting charts
