And now..the dreaded PCM failure..

[12Ounce]

I would guess in/near the REM, probably in harness ... but that is just a guess. I need to get a copy of that DVD.

[tomj76]

Have you considered "hacking" it to find out where it is located? Systematically disconnect the PCM and other electronics on the bus and check the resistance with a DVM. When the resistance goes high, you've found the location.

[oldgearhead]

Tom,
Yes, I've checked the continuity of both wires, circuits 915 & 915, through most of the module connectors. I haven't pulled apart the stuff to get to the REM yet. The next chance I get I will:
1) Disconnect Battey (-).
2) Check ohms at the DLC: 2 >10, 2>gnd, 10>gnd, 2>B+, 10>B+
3) Then disconnect connector C100 (removes the PCM from the circuit) and,
4) Check ohms at the DLC: 2>10, 2>gnd, 10>gnd, 2>B+, 10>B+

That should give me the big picture. If I see the bus is still unbalanced I'll borrow an O'scope and see if I can see the required pulses on each wire.

..maybe I'm unbalanced....

[oldgearhead]

Update:
Windstar has been running fine. The data line is still unbalanced. Also the PCMs with keys are still being sold on eBay for 220 USD by a fine company using the handle 'Ballonstones'.