HeMan26

Where can I get the wiring diagram for the 2014 IS? For my 2011 camry, I was able to purchase the diagram through my toyota account.

I'm just trying to figure out why the RES won't work in the car or see if it's just a problem with the wiring.

onepointon

Is it an oem res?

HeMan26

Yes. I don't have the module yet, but just want to see how the wiring is done. More curious on the wiring diagram of the v4 harness for the res module.

ELITech

Does your car have NAV?

PM me the info, and I can get you a wiring diagram possibly tomorrow when I am at work

specONE

iTrader: (3)

Installation instructions direct from the factory.
http://is.sewellparts.com/pdf/PT39853141.pdf


Owners guide.
http://drivers.lexus.com/t3Portal/do...ADG-0087-D.pdf

HeMan26

Looking at the installation procedure, there is two different procedures; one for G/W ECU and one without G/W ECU. I wonder if the problem is a signaling issue between G/W ECU and RES ECU. Correct me if I'm wrong, the G/W (gateway) ECU is the CAN communication between different ECUs in the car. Being a controls engineer who has programmed various PLCs that communicate with with CAN. I know sometimes the signals can be disrupted with noise going through the wiring or a proper resister isn't being used for VSWR. Also, this could also be an issue with the program, but if Lexus originally programmed the cars ECUs to accept the RES and I'm sure Lexus did their tests to make sure the programs work. Then this might be just a wiring or signaling issue. Lexus might not have tested the program with the production models. A lot of things change during production, especially wire routing.

This is just me assuming where the problem exists. Might have to run my own tests when I try installing the RES myself.

pillbox

Sorry to bump an old topic, but I was curious to see whether anyone has a wiring diagram like the OP mentioned.