I've been studying the functional diagrams and wiring schematics for the CIE-E and EZL systems and can't find a function for the TDC sensor.

The signal lines go to pins 7 and 8 on the X11 diagnostic socket (and pin 9 is the cable shield), and they appear to terminate there, which indicates that the TDC sensor serves no operational function. It's not even clear to me what diagnostic function it serves other than RPM, but an RPM signal is available from the EZL system on X11 pin one.

Am I missing something?

Duke