Hi,
Have you checked fuse 62 in the fuse box under the hood? If not, do that first. In addition to checking the fuse, confirm there is power to and from it. (See pic 1 below)
Here is a link you may find helpful:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
If the fuse is good, I need you to check the ECM relay in the same location. If there is a different relay with the same part number, switch them. If there isn't, here is a link that explains how to test a relay:
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
If that checks good, go to any of the ignition coils and disconnect the connector. Each coil has a brown wire going to it. Check to see if there is B+ voltage to the brown wire. (See pic 2)
Let me know what you find.
Joe.
See pics below.
Images (Click to make bigger)
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Monday, October 24th, 2022 AT 9:04 PM