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I need an E4OD expert

I need an E4OD expert

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Old

Jun 17, 2025 | 10:34 AM

#16

DittyPitty

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Trailering

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Quote:

Originally Posted by Mark Kovalsky

The ground wire is pin 38 on the PCM. The PCM supplies +12v all the time to the solenoid. It turns the solenoid on and off by making or breaking the ground on pin 38.

I probed pin 38 and connected to the chassis ground next to the battery and got OL. PCM was unplugged and trans solenoid was plugged in. Is that the correct procedure?

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Old

Jun 17, 2025 | 05:49 PM

#17

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

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From: SE Florida

Yes, that is the proper procedure. You do not have a short to ground. Now do the same thing, except go to +12V instead of ground. That will check for short to power.

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Old

Jun 17, 2025 | 07:00 PM

#18

DittyPitty

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Quote:

Originally Posted by Mark Kovalsky

Yes, that is the proper procedure. You do not have a short to ground. Now do the same thing, except go to +12V instead of ground. That will check for short to power.

I checked that as well and got OL.

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Old

Jun 17, 2025 | 07:19 PM

#19

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,712

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From: SE Florida

If you have a code 624, the wiring checks out, then either you have a bad EPC solenoid or a bad PCM.

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Old

Jun 17, 2025 | 09:21 PM

#20

DittyPitty

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Quote:

Originally Posted by Mark Kovalsky

If you have a code 624, the wiring checks out, then either you have a bad EPC solenoid or a bad PCM.

Is there a procedure to check is the solenoid or PCM is bad?

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