Very detailed write up. Thank you, I’ll start going through the steps. Pardon my ignorance, is the X2 connector The 58 pin connector? The smaller of the 2? I think it is just want to confirm. Those 2 wires are next to each other.I finally found DTC P0502 in the manual. (It wasn't in the index.)
The VSS is a permanent magnet generator, which is probably why it has attracted the metal filings. As the transmission tailshaft rotates it generates a fluctuating voltage that increases frequency and amplitude as the tailshaft turns faster.
The test procedure is to put the vehicle on a rack, start the engine, engage a gear, and watch for the input on the Tech2. You could probably check it with an oscilloscope, but I have no idea what would be good or bad.
There are some electrical tests you can do with an ohmmeter:
With the VSS connected, unplug connector X2 from the ECM
Check the resistance between terminal 53 (Yellow) and terminal 40 (Purple):
Then check the resistance between:
- More than 1500 Ohms indicates a cut or damaged wire
- Less than 1300 Ohms indicates a shorted wire
With X2 connected and the VSS unplugged you should have voltage at the Yellow wire with the ignition on.
- Terminal 53 (Yellow) and Ground. Less than 10 Ohms is a short circuit.
- Terminal 40 (Purple) and Ground. Less than 10 Ohms is a short circuit.
I also found P0807. (Also not in the index.)
This code says that the CPP Sensor is not returning any voltage to the ECM. First unplug the CPP Sensor:
- On the sensor measure resistance between terminal B (Light Green) and terminal A (Orange/Dark Green) as you sweep the sensor through its range. The resistance should vary smoothly.
- Ignition OFF test for less than 1 Ohm between the Light Green wire and battery negative
- Ignition ON test for 5 V between the Dark Blue/White wire and ground.
I measured what I believe was the right pins on the 58 pin connector. Here are the results.
I tried to measure individual pins (>10 ohms as the goal) but either my cheaply little multimeter is the issue, there is a complete break/cut in both wires, or I was not getting a good ground, but both pins where not reading any resistance.
Also, to my previous post, would the OBDII port still work even if the fuse was not in place?