Hi,
You should be able to retrieve codes via the check engine light (malfunction indicator lamp MIL) by grounding the single-pin connector. Try this. First, allow the engine to warm up and then turn the ignition off.
Ground the single pin connector and turn the ignition key to the run position (engine off).
Watch the MIL to see if it stays off, stays on, or if it flashes.
Let me know.
Joe
See pic below.
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Sunday, June 12th, 2022 AT 9:53 PM