X46 - Check B+ to Pusher Fan Control Relay

1994 Ford F 150 2WD Pickup L6-300 4.9LSECTION X46 - Check B+ to Pusher Fan Control Relay


- Key "OFF".

- Disconnect Pusher Fan Control (PFC) relay.

PFC Relay Vehicle Harness Connector:






- Measure voltage between the B+ circuit at the PFC relay vehicle harness connector and the battery negative post.

- Is voltage greater than 10.5 volts?

Yes -- Go to X47. X47 - Check Pusher Fan Ground Circuit

No -- Service open in B+ circuit. Reconnect PFC relay. Re-evaluate symptom.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.