Function Inspection

WARNING: This page is about a different car, the 2017 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Connect the M-MDS to the DLC-2.
Switch the ignition ON (engine off).
Display the PIDs APP1 and APP2. (See ON-BOARD DIAGNOSTIC TEST .) (See PCM INSPECTION .)
Compare the voltage and opening angle indications for the PIDs APP1 and APP2 with the standard in the table indicated below.

If they do not match the standard, replace the PCM. (See PCM REMOVAL/INSTALLATION .)
If they match the standard, perform the voltage inspection. (See VOLTAGE INSPECTION .)