Tech Forum

I'm troubleshooting an electrical issue on my S13 KA24DET using a Wiring Specialties Pro chassis and engine harness, Link ECU, and PDM15 with an 8-button CANbus keypad and digital dash.

The original PDM experienced issues after I discovered a connector filled with water, with corroded pins and a slight burnt smell. I subsequently found that the PDM was not supplying proper 12V to the C6 output on the green connector.

I replaced the PDM and reloaded the configuration file. The replacement worked for approximately five laps on track before the keypad and digital dash shut off again.

Current symptoms and findings:

• C6 is commanded ON in the PDM software but measures 0V.

• I've confirmed 0V directly at the PDM's C6 output pin and at the keypad/dash end of the harness.

Im working on a PWM fan control strategy and im running into an issue with the way that the PWM mapping is done in the outputs. The fan i have is a spal 18 inch 850w fan from a 2019 camaro SS. This fan requires 10% to stay on and 90% for full speed, below 10% or above 90% sets an error code.

This is my current mapping that i have and i have no way of setting 10% or 90% as the baseline in comparison to the coolant temperature. I will probably need to make another 2d table to create an artificial 10-90% bottom and top threshold. One suggestion i could make to solve this issue is to allow adjustability of the scalars (the 0-100% numbers on the left of the value inputs) This would allow for much easier interpolation and setting top and bottom thresholds. (Have a project…

Hello, first time using a PDM15 v2 so im wondering if i have made an error myself in the programming, Im trying to test my ecu on and off but everytime i turn off the output the ecu is staying on because the output reads 10.5-10.8v, same goes for all the other outputs those devices just dont turn on, they all read 10.5-10.8v, ive tested all the outputs in case of any back feed and there is no power going back other than the Pin 3 on the green DT connector that requires power. Thanks for your help!

I have a project that im working on that im looking to stream all of the voltages from the inputs directly to another canbus device and it looks like nothing is coming in on the input #6 and 7 which are setup as temperature sensors (and are at 2.3v in the first input picture) Kvaser on the same bus is capturing that 00xx data is coming through even though there is definitely voltages on this input. This specifically seems to only affect the inputs, the outputs do output the proper voltage all the way down to 0v atleast on the HS, not sure about the LS. This isnt a major issue on this project, just wanted to bring it up to the developer for fixing in the future.

I have a PDM25 V1 and a PDM25 V2.

The V2 exposes the hardwire can stream contents in the configurator and I'm good with that, but the V1 doesn't.

I hoped that, by ticking the enable stream checkbox and selecting the Hardwire option, it would output a similar stream.

That doesn't seem to be the case and you can't load a config file in either.

I've looked at the hwpdm file (JSON) in the hope that I could just paste in the file from the V2, but the properties are different.

Also, the v2 stream uses 40 frames, which would use all of the available frames in the V1, which isn't ideal.

I would like to stream IMU angle over CAN with my PDM25v2 on FW1.3.0. I have enable the can stream and is able to monitor the CAN message coming out. What I am concerned about is that all the value for angles are exactly zero while variable monitor is showing small angle of +-0.05 so I would expect to see some values in the CAN stream. The module is already mounted so tilting it to check might be harder to do so I would like to check if I am missing anything before diving more. Additional information is that the IMU is shown to be uncalibrated in the IMU tab so I'm not sure if that would gate the CAN output although it is showing on variable monitor. If IMU needs calibration, what is the process as I do not see the necessary GUI element for calibrating the IMU.

i have a pdm15 was working just fine and now it won't work at all. keypad turns on but when buttons are pressed nothing happens. Dash turns on, windows work. no keypad functions work. firmware wont update and can't program. keypad and dash are very slow to turn on as well. Takes a lot longer than it used to for it to wake up. nothing has changed.

Is it still true that it's not possible to restore a config backup after updating the firmware? I'd like to update my PDM25+ from 1.1.5 to 1.1.6, but don't want to set the whole thing up again like last time.

Does anyone know is a pre June 2020 PDM15 be upgraded to have pull down resistors ?

Without them I am having to put additional external components into my wiring that I'd rather not do.

I've been looking at making a simple PCB with grounded 10K resistors for all inputs. Don't supposes anyone has done this already and might share a PCB design?