J10 - Does Engine Start

Diagnostic Trouble Code (DTC) 542 indicates that one of the following has occurred:

No Start:

- Inertia Fuel Shutoff (IFS) switch not reset or electrically open (if in secondary circuit).

- Open circuit between the fuel pump and Fuel Pump Monitor (FPM) circuit connection to the power-to-pump circuit.

- Poor fuel pump ground.

- Fuel pump electrically open.

Engine Starts:

- Fuel pump secondary circuit short to power.

- Fuel pump relay contacts always closed.

- Open in FPM circuit between Powertrain Control Module (PCM) and connection to the power-to-pump circuit.

- Left/front Heated Oxygen Sensor (HO2S) short to power

- Damaged Powertrain Control Module (PCM).

- Does the engine start (for trucks with dual fuel tanks, verify tank selector is in the same position it was when Key On Engine Off (KOEO) DTC 542 was received)?

Yes -- Go to J11. J11 - Verify That Fuel Pump Is Off

No -- Go to J15. J15 - Check Inertia Fuel Shutoff (IFS) Switch