Chrysler Repair: 1999 Sebring Convertible: replace PCM?, throttle position sensor, 4 digit numbers

Question
The throttle position sensor had to be replaced according to the PCM codes.  After replacing sensor the check engine light went out but the tech said that transmission cooler lines were leaking onto the PCM and that the PCM had to be replaced.  The car is garaged when not in use and I have not seen any spots on the floor under the car.  The reason I know this is because I was told it could take a month to get the new PCM so I was allowed to drive my car home until the part arrives.  Where do I look to see if the PCM is actually wet with fluid and aren't those things sealed to keep stuff from getting into them.

Answer
Hi Debbie,
I agree with your questioning this replacement need. The PCM is mounted pretty high in the comparment, being located just behind the radiator on the driver side, just outboard of the rectangular power distribution box where fuses and relays are located. The transmission controller is inboard of the same box. It has two rectangular plugs on its top side. The transmission upper coolant hose does also run on the left side of the engine compartment to the radiator so it is possible that some trans fluid got onto the side of the pcm from a leak of the fitting. But if there is no evidence of malfunction then there is no basis for replacement. The PCM is very well "potted" against intrusion, and any oil on the plug/socket interfaces could be corrected by cleaning the interfaces and spraying with electrical circuit board cleaner available in a spray can from an electronics store.
The test would be whether the PCM has noticed and stored any operational failing as a 'fault code' in its memory. You can find out by turning the ignition key:"on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the odometer window of the speedometer to see if the mileage reading changes to show any 4-digit numbers preceeded by a P. Let me know, if so, and we can evaluate whether those say it has been damaged. If no other malfunction is current I would cancel that order for a new PCM.
Roland
PS:Your use of the term "allowed to drive" sounds as though they have you intimidated. Don't let that happen, keep questioning!