dougmac wrote:
Code 22-12?
The ECU is receiving a voltage signal that is below normal.
There are several possibilities:
1-The sensor is miss-adjusted into the error zone.
2-There is a shorted or open circuit on the signal wire (156 blue) or the TPS high wire (124 red)
3-failed TPS
4- a very remote but possible chance that the ECU is bad.
Five volts should be supplied to the sensor on the 124 red wire. As the TPS is cycled through its range the voltage on the 156 blue wire should vary. It should no go below 0.5 volts.
I had a similar problem a couple of years ago. It turned out that one of the cables plugged into the Transmission ECM had worked it's way loose on one side, just enough to cause the error code every once in awhile. Unplugged it and plugged it back in, making sure that the connector was well secured and haven't had a problem since. Not saying that this is your problem for sure, but might be another thing to check.
