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Where is the pcm relay on 1997 Ford Expedition?

The Powertrain Control Module (PCM) relay location on a 1997 Ford Expedition isn't a single, easily identifiable relay like some other components. The PCM itself doesn't have a dedicated relay in the same way a power window relay might. Instead, the power and control signals for the PCM come from various fuses and circuits within the underhood fuse box and possibly the Power Distribution Box (PDB) located near the battery.

To find the relevant fuses and circuits, you'll need to consult your 1997 Ford Expedition's owner's manual or a wiring diagram. The manual will show you the location of the underhood fuse box and the layout of the fuses and relays. Look for fuses related to the PCM, engine control, or the ignition system. These are the components that provide power and control to the PCM.

In short: There isn't a "PCM relay". You need to check the fuses and wiring related to the PCM's power supply. Using a wiring diagram specific to your year and model Expedition will be crucial to troubleshoot any issues with PCM power.

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