I have substituted the engine loom and verified all fuses and relays, all of which are functioning properly. The engine fails to ignite. The starter activates as though attempting to rotate the engine but fails to persist. The engine can be manually rotated via the pulley, indicating it is not seized.
I connected to Ista, which displays many problems; upon clearing, some reappear while others do not. However, I am confident it should still start regardless. I am currently perplexed. I have also replaced the DDE relay.
Requesting assistance, if possible.