I just purchased a 10th AE RX7 with a finishline body package.
The car needs a few things but the price was right.
I am struggling with the boost sensor. The gauge will only increase to just above zero and from my understanding should be reading around 280 mmHg.
I checked the voltages of the wires at the sensor and show 2.2V. Then I went to the ECU (N333) and am struggling. From what I have read and seen from diagrams it seems the 3rd wire in is 2B which should be brown and red on the center plug in. On my center plug in the brown and red wire is the bottom left wire and reads 2.2V. The 3rd plugin over also has a brown and red wire in the 3rd slot and reads 12V.
Is it fair to say the 2.2V wire is the same as the boost sensor wire?

 

The middle sized plug bottom row far right position is pin 2B. With the power turned off you could always rely on a continuity test to verify where on the ECU the wire you are checking for lies.

 

Thanks a lot. That was the same wire I tested at 2.2V. I had to turn the ECU over to get the probe in place. Based on that I believe I need a new sensor.

 

Which gauge are you referring to?

 

The boost gauge in the cluster.

 

The wire from the sensor to the gauge might be faulty.