4.7 engine swap won't run code P1389 ASD - JeepForum.com
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Unread 11-25-2008, 08:37 AM   #1
meat27
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Join Date: Apr 2008
Location: AL
Posts: 17
4.7 engine swap won't run code P1389 ASD

Just dropped a replacement 4.7L into an '01 GC Ltd.

The motor spins over but won't run.

It stores code P1389. I have found the definition for the code, but I don't have any experience with an "Auto Shutdown..........."

Any ideas on where to start?????


Last edited by meat27; 11-25-2008 at 08:48 AM..
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Unread 11-25-2008, 08:44 AM   #2
-Joe-
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1995 ZJ 
 
Join Date: Jan 2005
Location: Lexington, KY
Posts: 4,634
P1389 (M)
No ASD Relay Output Voltage At PCM

No Z1 or Z2 voltage sensed when the auto shutdown relay is energized.



P1389 (M)
No ASD Relay Output Voltage At PCM

An open condition detected In the ASD relay output circuit.






Loose connection or bad relay?
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'95 Jeep Grand Cherokee Laredo I6 4.0L
242TC - Extreme Engineering 2" Front Lift/1.75" Rear Lift - ES9000 Shocks + JKS BPEs
Moog Cargo Control Springs
Magnaflow Converter - Dynomax Muffler
235/75/15 AT Uniroyal Liberator Tires
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Unread 11-25-2008, 08:50 AM   #3
meat27
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Join Date: Apr 2008
Location: AL
Posts: 17
Just found the problem.

I had seen other people swapping the relays, so I did that, still had problem, and jumped on here.

Then took another look and found and ASD 30A fuse blown. Swapped it and runs good. Duh. Sorry I jumped on here without going through the fuses first.

Thanks for the advice Joe
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