Mazda MX-5 Miata Sport 2007 Manual page 1031

Fig. 40: Identifying Data Link Connector DLC-2
Courtesy of MAZDA MOTORS CORP.
2. Turn the ignition switch to the ON position (Engine off).
3. Select MAP PID on the M-MDS or equivalent.
4. Verify that the MAP PID (pressure) and barometric pressure are practically equal.
If not as verified, perform the CIRCUIT OPEN/SHORT INSPECTION.

If there is no open or short circuit, replace the MAP sensor. (See MANIFOLD ABSOLUTE

PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [LF] .)
If as verified, go to next step.

5. Apply vacuum of -25.0 kPa {-187 mmHg, -7.38 inHg} to the MAP sensor, and verify that the MAP
variation from that of Step 4 is approx. 25.0 kPa {187 mmHg, 7.38 inHg}.
If not as verified, perform the CIRCUIT OPEN/SHORT INSPECTION.

If there is no open or short circuit, replace the MAP sensor. (See MANIFOLD ABSOLUTE

PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [LF] .)
CIRCUIT OPEN/SHORT INSPECTION
1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [LF] .)
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity Inspection)
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Engine Control System - MX-5 Miata