Checked the wire from PCM to knock sensor: not melted and there's continuity between the PCM connector (B15) and the connector at the KS. So now I guess it's time to do the full diagnostics on the KS circuit? Some more data:
- KS is brand new Delphi, AS10016.
- First data logs after '7427 install did NOT flag code 43, or any other code.
- SES lights intermittently, but rarely and for a short time. Has lit after both accel and decel as well as at cold idle.
Maybe the connection at the KS is just loose? Thoughts on what to check next? It seems like there are some voltage checks one can do on the KS circuit, but I've read some conflicting data on the 'net.
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