http://www.ultimatesubaru.org/forum/topic/6881-how-to-replace-fuel-temp-sensor/#entry59408 написа:
I just learned about this sensor recently and I think it was the same poster on the Car Talk board that was inquiring about this.
I have the factory manuals for my '01 Outback and here is what it says about DTC 183. This means the ECM is seeing a high input from the sensor. I believe this means a high resistance in the circuit to the sensor or the sensor itself is open.
The temperature sensor is in the tank mounted near the pump. can be replaced seperately, and that you should replace the fuel level sensor also when replacing the temp sensor.
The connection to the sensor is through connector R58 on pins 5 an 6. Pin 6 ties back to the ECM on connector B136 pin 26. Pin 5 ties back to the ECM on the same connector pin 16. On the sensor side, it looks like pin 6 is the high side and pin 5 is the ground side. It may be pin 5 is isolated from ground but I can't say for sure.
The book says you should see between 4 to 10 volts on pin 6 to chassis ground with the connector removed from the pump connection if things are ok with the wiring back to the ECM.
One quick thing to look at would be to measure the voltage between pin 26 and 16 on the ECM and see what it is.
There are warnings about removing the fuel pump if the fuel level is above 3/4 of a tank and making sure the ground is connected to the assembly before putting the pump back after removal. Unless you are real intent on doing this I would leave it for the pros to do. When it comes to exposed gasoline I don't like to mess with things unless I really have to. The risks are not worth it to me.
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