Credit: sanford7575/DennisMik
I had to write something because this job sucks! ’97 I30 with a bad air mix motor (only blowing cold air all the time…did the FSM diagnostic on the climate control system and got a -26 PBR short circuit). Had to order the new motor/actuator from Nissan Parts Zone ($60) because rock auto, eBay, and Autozone had nothing.
Anyway, I’m in the middle of doing this job now, and there is no freaking way to get to the air mix motor without removing the ECU, and moving the wire harness out of the way. I also had to take the glove box out to undo a dash harness that patches into the main ECU harness. The long story short is that it took me the better part of 3 hours just to remove the failed air mix motor. I honestly thought that this would be a half-hour job, and it’s going to take me the better part of tomorrow to finish.
I may end up doing an official write up with pictures, but just wanted to complain and tell everyone that this job is a pain in the !@!#$ There is no space to work, and the three bolts that hold the air motor in place are not accessible unless you remove the ECU and have a special small ratcheting screwdriver (got mine from harbor freight for $2) to remove the ECU from its bracket and the air mix motor from its mount, and a long handle 10mm ratcheting wrench to remove the ECU mounting bracket from the body.
Damn this repair, I hate hanging upside down in the front seat. I may actually install a remote start and car alarm system since I’m down here and wires and dash panels are exposed. Gotta love underestimating the time on a repair job! I think I live for this %$^&; Nissan / Infiniti 4 ever!
The PBR is built inside the Air Mix Door Motor, it is not a separate item.
Here is a view of the Air Mix Door Motor from the passenger foot well.
Here is the Air Mix Door Motor opened up. In the left half, about the middle, is a small gear. It is mounted on the PBR. If you look on the right half, there is a white half gear that has some metal fingers on it. The metal is copper and you can see green corrosion on the fingers. That corrosion is why your motor doesn’t work.
ards the front of the car. You can barely see it from the driver’s side foot well, it is more easily seen from the passenger side foot well. The PBR is built inside the Air Mix Door Motor, it is not a separate item.
Part Number: 27732-40U00
