I need some help with code 13 pressure sensor. Switch the pressure sensor and the ecu out. Could it be the wiring? I'm confident on testing steps 1 2 and 4 on workshop manual. Also need to know if I can bypass the stock harness...

 

Simplest method is to swap in a known good map sensor. After that you should get an ecu pinout and do a continuity check at the ecu harness and the map sensor harness. You'll find the problem with one of the two steps...

 

I did step 3 but not sure if I did it right. Ecu and map sensor are good because it came offs running car

 

tested 4D on ecu with BR/B on plug got continuity, correct?

 

I don't have the FSM in-front of me. Look at the wire that goes into the pin and make sure it's BR/BK as-well and see if there's continuity. I wouldn't use the FSM in this case for their flow chart but rather just the wire colors and the pin locations. Do what I said and measure from pin to pin for each of the three wires and if you have an open you've found the problem.

 

Not sure if the FD is like my Supra was, but with the Supra, when I had a code that would put it in limp mode, it stored that code, so even when fixed, the code wouldn't go away until it was cleared. Have you disconnected the battery for a minute or so and ensured that the code is gone even after swapping it?

Trev