Hi,
If you are not getting spark, it could be a few things. Most commonly, this is caused by a faulty crankshaft position sensor. See pic 1 for location.
By chance, do you have a live data scanner? If so, check to see if there is an RPM signal when cranking the engine and let me know the results.
Next, check to make sure fuse 53 is in the under-hood fuse box. Make sure when you check the fuse, you also check there is power to and from the fuse. Here is a link you may find helpful.
If the fuse is good, then I need you to remove the ECM relay in the same box. If there is another relay that has the same part number, switch them. If there isn't one to switch, 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 you look below, I attached the wiring schematic for the coils. What I need you to do is this. If the fuse is good and the relay is good, we need to check for power at the coils. The wires I highlighted should have power when the key is in the run position. Check that. You can use a simple test light or multimeter. (See pic 2 for coil wiring)
If there is power, note that all coils have a common ground located on the left-hand side of the engine. The black wires at the coils (key off) should have continuity to ground via the black wires. Check that if you have power.
Let me know what you find. Also, let me know if the fuel pump is running for a couple seconds when the key is first turned on.
Take care,
Joe
See pics below.
Images (Click to enlarge)
May 4, 2022 at 8:25 PM
