Chrysler Repair: 99 Cirrus/Stratus/Breeze O2 sensor, protection tubes, head gasket

Question
QUESTION: Hi Roland,
You have answered a question very well for me in the past and I am hoping you can help me shed some light on a new problem.

I have a 1999 Dodge Stratus with 2.4L engine.  Car has about 140000 miles.  Recently I purchased the car because head gasket was leaking.  Repaired head gasket successfully, but had some trouble codes from check engine light and blown fuse for I believe fuse #5 (PCM-ASD?).  After much investigation, I found several wires corroded and shorting inside of heat protection tubes. I guess they were almost shorted before and thru the process of our rebuild we moved the wires and caused the final shorts. Replaced wires and now got it to not blow fuse and car seems to run fine.  

However, I do still have some trouble codes remaining that I hope you can help me with.  I get trouble codes for O2 sensor P0134 and P0132?  The previous owner had no trouble codes for O2 sensor before head gasket blew.  The cabling of wiring harness to the sensor was also corroded and was re-wired by myself.    Now, I noticed that there seems to be a short between 2 pins on O2 connector from car wiring harness.  When unplugged from O2 sensor, I get continuity  between the pins for wires color coded BLACK and Dark Green/Orange stripe.   I am wondering if I might have mis-wired the connections? Can you help me verify I have connected wire color codes correctly?  And more importantly, which color wires should be connected to which pins on the vehicle's upstream O2 harness connector?

Thanks for your time,
Glenn

ANSWER: Hi Glenn,
The wiring of the upstrem oxygen sensor is:
pin 1 black  heater ground to the left strut tower ground
pin 2 dark green/orange 12V supply from the ASD relay (should show
 12V when the engine is running)
pin 3 black/orange sensor ground to pin 27 of the pcm
pin 4 black/dark green sensor signal to pin 30 of the pcm

As you know both the 0132 and 0134 are about the sensor signal either not changing or being shorted to 'voltage'.
Roland

---------- FOLLOW-UP ----------

QUESTION: Hi Roland,
Wondering if you have any way for me to tell which pins are which on the harness connector for O2 upstream sensor?  Any diagram of the connector itself to show pin numbers?  My O2 connector harness has a couple of very short wires since I stripped it back and it's hard to tell which color codes of wire are on each pin.
Thanks so much,
Glenn

ANSWER: Hi Glenn,
The connector is round and has 3 squarish 'ears and one dimple on the edge.  
If you hold it with the largest ear to the left and the medium ear to the right then the pin numbers are upper left 1, upper right 2, lower left 3, lower right 4.

---------- FOLLOW-UP ----------

QUESTION: Hi Roland,
I still have the P0134 code on my Stratus.  I checked my wiring and it is correct per your info above. I even back probed the PCM connector at pins 27 and 31 to watch the voltage from the O2 sensor while the car was running.  It ranged from .4 up to .8 volts and pretty much stayed at .8 volts after it warmed up.  This seems to indicate to me that the sensor is reporting correctly to the PCM.  I also checked the O2 heater circuit and got a steady 13 volts on that circuit.

So, it seems that the O2 sensor and circuits are now correct, but after clearing the code, the PCM is still setting the code to P0134 after the car runs for only a few minutes.

Do this seem to you that my PCM could be bad?  Maybe my previous wiring shorts in the harness have shorted the PCM?  Have I exhausted all other possibilities?  Any other suggestions before I try replacing the PCM?

Thanks for your advice,
Glenn

Answer
Hi Glenn,
The signal is monitored after the engine has been running for at least 2 minutes with the coolant sensor indicating 170 or more degrees. Then if the signal stays between 0.35 and 0.55V for more than 1.5 minutes it sets the code. Possible causes are sensor signal wire open, a sensor failure, pcm failure, and wiring problems in the connector or supply wires. I can xerox and postal mail you a couple of pages that would give you a procedure for sorting out the probable cause if you will send me back a postal mailing address.
Roland