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Discussion Starter · #1 · (Edited)
I did some testing of the failure analysis system that is built into the touch-screen head unit of the 2014 Mazda6. For those who do not know how to enter this testing system, do the following:

Upon starting the car, wait for the radio to pass the "Mazda" screen. Then hold the power button for at least ten seconds. While doing this, hit the "Seek forwards" button. The screen with the number pad will appear. If at any time you enter a code, and want to get back to the main screen with the number pad, hit the power button. To enter the main radio, restart the car.

Anyway, I tried entering every number from 01 to 99 (minimum to maximum).

The results are below:

Failure Analysis Testing Codes
(WARNING, FOR TESTING ONLY. I AM NOT RESPONSIBLE FOR ANY DAMAGE RESULTING FROM USING THESE CODES)

01 Test Screen (Tap to test different colors)
03 Test Each Speaker (Cycles automatically)
04 Radio Signal Strength
06 Maker Code
07 Check Amp
10 SW Version
14 Rotary Encoder
15 Vehicle and Navigation Check
16 Connect Info
17 Configuration Summary-- FixEQ, Emergency#, Antenna Type, Proj, Speak Type, etc
37 HF ACU connection (High Frequency Connection, possibly satellite)
38 HF Soft Version (High Frequency, possibly satellite-related)
81 Software Update
83 Calibrate Screen
84 BD Address (Possibly bluetooth-related)
86 Lines? (not tested, warning!)
87 Touch Screen Testing
88 Check SW Info (blank)
89 Bit Error Rate Test/Digital Transmission Test
92 Camera Test
 

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Speaker test seems to be one of the best options in there. Thanks for the info!
 

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you don't need to hold the power for 10 seconds, just press it and then immediately the seek forward button, FYI XD
 

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Discussion Starter · #5 ·
Added a couple of details found over at Mazdas247.
 
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