Quote:
Originally Posted by CamP
Thanks Tom, I'm aware of the grounding issues with the sensors, but I seem to recall Gordon Killebrew mentioning a secondary ground that was only used in 1990 being a source of code 16 faults.
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You're welcome! The service bulletin 90-401-9 which applies to all C4's besides ZR-1's. was issued in 1991. The only thing I remember was to do a Scott Fabre suggests and use a star washer to get a better ground from the mounting tab. There are no other grounds save the mounting tabs and the grounds that exist in the actual SIR system wiring harness.
If you are having the code 16, you need to repair the bad contact at the sensor ( both L & R ) mounting tab. That's all there is to it besides clearing the codes which will take some patience.
Tom