Mazda 3 Service Manual: Mass Air Flow (MAF) Sensor Inspection [Mzr 2.0, Mzr 2.5]
Visual Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Disconnect the MAF/IAT sensor connector.
4. Remove the MAF/IAT sensor..
5. Visually inspect the MAF/IAT sensor for the following:
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Damage, cracks, soiling
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Rusted sensor terminal
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Bent sensor terminal
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If there is any malfunction, repair or replace the MAF/IAT sensor..
Voltage Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the MAF/IAT sensor without disconnect the MAF/IAT sensor connector..
4. Reconnect the negative battery cable..
5. Connect the M-MDS to the DLC-2.
6. Switch the ignition to ON.
7. As the air gradually approaches the MAF detection part of the MAF/IAT sensor, verify that the MAF sensor output voltage (PID: MAF) varies..
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If not as verified, replace the MAF/IAT sensor..
Manifold Absolute Pressure (Map) Sensor/Intake Air Temperature (Iat) Sensor
No.2 Removal/Installation [Skyactiv G 2.0]
NOTE:
Because the IAT sensor No.2 is integrated in the MAP sensor, replacing the
IAT sensor No.2 includes replacement of the MAP sensor/IAT sensor No.2.
1. Remove the battery cover.. ...
Mass Air Flow (MAF) Sensor/Intake Air Temperature (Iat) Sensor No.1 Removal/Installation
[Skyactiv G 2.0]
CAUTION:
Be careful not to hit the sensor element or allow foreign matter to get on
it during sensor removal/installation. If the sensor element is hit or foreign
matter gets on it, an e ...
Other materials:
Knock Sensor (Ks) Inspection [Mzr 2.0, Mzr 2.5]
Resistance Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Disconnect the KS connector.
4. Measure the resistance between KS terminals A and B.
If not as specified, replace the KS..
Specification
Approx. 4.87 megohms [normal tem ...
Relay Block Inspection [With Advanced Keyless Entry And Push Button Start System]
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Driver-side front scuff plate.
b. Driver-side front side trim.
c. Hood release lever.
d. Upper panel.
e. Shift knob (MTX)(See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION
[G66M-R].)(See MANUAL TRANSAX ...
Clock Switch Inspection
NOTE:
Clock switch built with the hazard warning switch.
1. Disconnect the negative battery cable..
2. Remove the clock switch..
3. Verify resistance between the clock switch terminals.
If the resistance is not as specified, replace the clock switch.
Between t ...
