VOLTAGE INSPECTION
1. Remove the MAF sensor with the connector still connected.
2. Turn the ignition switch to the ON position.
3. Verify that the MAF sensor output voltage (M-MDS monitor item: MAF) changes when wind is
introduced gradually to the sensor part of the MAF sensor.
z
If it cannot be verified even though the related harnesses have no malfunction, replace the MAF
sensor. (See
MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR
REMOVAL/INSTALLATION [MZI-3.7]
.)
z
If the monitor item status/specification (reference) is not within the specification, even though the
resistance is within the specification, perform the "Circuit Open/Short Inspection".
CIRCUIT OPEN/SHORT INSPECTION
Fig. 11: Identifying MAF/IAT Sensor And PCM Wiring Harness Side Connector
Courtesy of MAZDA MOTORS CORP.
1. Disconnect the PCM connector. (See
PCM REMOVAL/INSTALLATION [MZI-3.7]
.
2. Disconnect the MAF/IAT sensor connector.
3. Inspect the following wiring harnesses for open or short. (Continuity inspection)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Control System (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:07:19 AM
Page 14
© 2005 Mitchell Repair Information Company, LLC.