Mazda MX-5 Miata Sport 2007 Manual page 1066

2007 ENGINE PERFORMANCE Engine Control System - MX-5 Miata
Fig. 73: Locating DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
2. Turn the ignition switch to the ON position.
3. Select BARO PID on the M-MDS or equivalent.
4. Verify that the BARO PID (pressure) and barometric pressure are practically equal.
If not as verified, replace the PCM. (See PCM REMOVAL/INSTALLATION [LF] .)
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2007 Mazda MX-5 Miata Sport