Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

Finally, all of the electrical components were back in place on my NSX so managed to re-connect the battery.

Although I can’t start the engine yet, decided to check the two CCU boards.





One of the board on my NSX. The Lot # will tell which one.





In the process of Function and Operation check. JDM audio head unit has different logo on the cassette player door.


Both boards operated fine however, due to the cold temperature, the A/C compressor switch was not possible to be checked even using the above procedure which will force the system to ignore most of the sensor inputs.
The evaporator temperature sensor has to see at least 4degC in order to engage the A/C compressor CL so I need to think another way to warm it up.

To be sure, checked it with my CCU board and the same result.
Looks like I need to fire up the engine and warm up the garage bit more….

Hope to return these boards to the owners soon.

Kaz