I made a mistake of going down a rabbit hole without properly understanding the system and threw the parts cannon at it. I replaced the module under the seat as well as the one under the dash. Neither replacement fixed the issue but both modules were used and pretty cheap on eBay, so they could just as well be broken too.

If both the seat switch and mirror switch don't work, how do I know which is the correct part that is broken? I didn't touch the circuit breaker near the radio yet or test any wires for low voltage.

 

Does the circuit breaker fuse next to the radio that powers the ADP model just have 12v in and 12v out that can be tested with a volt meter? What is the best way to diagnose this? It seems odd that, I've changed the BCM and ADP module and have the exact same symptoms (no mirror adjustment and can't move the seat in any direction). Also after going through the service manual the mirrors are controlled from the ADP module (and not the BCM module) so I'm trying to trace back from there.


In the mean time, does anyone know the color wires to put power to if I want to manual move the seat forward? I'm trying to find it in the service manual but wiring isn't my strong suit.

Thanks

 

Dude, the service manual wiring "diagrams" suck. They are more like charts that make you reference other charts spread out over multiple Non-sequential pages.
And then they are only partially labeled according to what section they are in.
Plus it seems Nissan/Infiniti changes wire color at every junction with no rhyme or reason.
I mean, WTF
I would pay good money for a printable, fully labeled color diagram!


Should be 12V at the fuse. But canbus voltages are usually 5V and below.

I have resorted to hardwiring around faulty control modules on several modern vehicles.
Toggle switches for seat motors, A/C blowers, headlights, etc
Analog flasher units for turn signals etc.

not much help, I know
but
good luck!

 

I couldn't agree more. I've done a lot of wiring on other projects but my confidence goes down pretty fast when I don't trust my understanding of the service manual charts. Most of the service manual diag is, "plug in CONSULT-III and run auto test on module"... I think I'm just going to lift up the seat and try to follow the wires from the motors and start putting power/ground to them one at a time until I can get time to properly trace wires from the ADP module to the battery.


I tested Fusible Link K and Terminal B (on the battery positive that feeds fusible link K) all seem to be fine. So either the "circuit breaker fuse" near the radio is bad or the ADP module I bought has the same exact issue.

 

Figured I would bring this back from the dead to post the resolution. It wasn't the ADP module or any fuse. I was losing power at the seat module, it would get 2-4v on the power pin then when I would press the seat controls the voltage would hit zero. I pulled the connector up behind the dash and the pin was broken off inside the connector and had corrosion around it.

 

Excellent troubleshooting work and congrats on finding, and fixing, the gremlin. You've more patience than I ever would have had on this...