Hi Jim,
Thanks for explaining the "paper clip" procedure. Turns out that I solved my problem, and I have to admit, it's partly me being a doofus. Let me explain, first some back ground. Last weekend I replaced the idler pulley on the serpentine belt tensioner. That procedure went fairly smoothly. However, it required me to disassemble the front left motor mount and attaching plate to the motor. What I didn't realize at the time was as I wiggled the cumbersome plate out and away of position to gain access to the belt and pulley assembly, I inadvertently caused a wire plug to dislodge from it's socket due to the force of the plate being shoved aside. Today I retraced the steps I took during the repair procedure, since the car was just running fine with no error codes before I changed the pulley. As I checked around the engine compartment near the back left side of the engine, I happened to see a blue colored, I believe gasket, visible near the end of a wire. That seemed odd to me. So I shined a bright light in the gap between the engine and left fender wheel well. Lo and behold, the wire's plug was mostly dislodged from it's mating socket. Turns out this is the wire connection for the cam shaft position sensor (CMP). So the cam shaft position sensor was completely disconnected and apparently detected as such by the PCM. Whats odd is that the PCM recorded a "bogus" DTC code 049 as read by my Actron scanner instead of a more revealing and helpful DTC code 041. Suffice it to say, after seating the plug back into it's socket the check engine light is now off and no trouble codes are present in the PCM. Anyway, thanks for your help on this. I wonder though if the "paper clip" code reading method could have provided a more accurate DTC code for this issue. I'll have to try that later to see.
Oh, one other question...in the future I'm thinking about using OBD scan software on a laptop to read the codes. For the cable connection, I believe there is a way to jumper certain pins on the data link connector to be able to read the DTC codes on a laptop. Maybe the UART pin 9 and the PCM GND pin 5 are connected to a RS232 pin 2 and pin 5 on the laptop? Do you have any experience with this, any recommendations? Thank you.
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