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Fuel Shutoff Solenoid Supply Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 254 PID: S017 SPN: 632 FMI: 4/4 LAMP: Red SRT: |
Less than Positive (+) 6 VDC detected at fuel shutoff circuit or an excessive current draw from the electronic control module (ECM) or faulty ECM output circuit. |
The ECM turns off the fuel shutoff supply voltage. The engine will shut down. |
 Fuel Shutoff Solenoid Circuit
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Circuit Description
The fuel shutoff 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 solenoid.
Component Location
The fuel shutoff solenoid is located on the fuel pump housing near the fuel outlet line. Unspecified earlier versions used a dedicated return wire
(pin 32) that is mounted to one of the shutoff solenoid mounting bolts. Newer models use only a fuel shutoff supply wire (pin 33).
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 Positive (+) terminal for a loose connector or accessory wiring with damaged insulation.
Refer to Troubleshooting Fault Code t05-254
Last Modified: 02-Sep-2010
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