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Jeep Forums: YJ Wrangler Technical Forum   08-21-2021, 06:44 PM
Replies: 32
Views: 2,658
Posted By jtec
you started another post for the PCM question. ...

you started another post for the PCM question.

https://www.jeepforum.com/forum/f12/95-wrangler-4-0-do-i-need-new-ecm-4440863/
Jeep Forums: YJ Wrangler Technical Forum   08-17-2021, 06:15 PM
Replies: 32
Views: 2,658
Posted By jtec
The ASD supplies 12v to coil, alt field circuit,...

The ASD supplies 12v to coil, alt field circuit, injectors, o2 sensor heater - a WAG check the O2 sensor for grounded.

sorry for the POS diagram but it should help.
Jeep Forums: YJ Wrangler Technical Forum   08-17-2021, 06:03 PM
Replies: 32
Views: 2,658
Posted By jtec
might be interesting to check the fuel injectors...

might be interesting to check the fuel injectors - they should have 12v form the ASD same circuit.

You did unplug the coil to check for 12v and the other wire for groound or voltage?
Jeep Forums: YJ Wrangler Technical Forum   08-17-2021, 05:09 PM
Replies: 32
Views: 2,658
Posted By jtec
The ASD supplies 12v to coil. Unplug coil -...

The ASD supplies 12v to coil.
Unplug coil - check wires the DG/OR wire 12v and BK/GY not grounded or showing voltage.

12 Battery Disconnect within the last 50 Key-on cycles.
24 Throttle...
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