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MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.5T]
id0140h0800700
Visual Inspection
1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
2. Remove the MAF sensor/IAT sensor No.1. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
3. Visually inspect the MAF sensor for the following:
Function inspection
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition ON (engine off).
3. Display the PID MAF. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) (See PCM INSPECTION [SKYACTIV-G 2.5T].)
4. Compare the voltage and flow rate indications for the PID MAF with the standard in the table indicated below.
Standard
|
MAF |
Remarks |
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|---|---|---|
|
V |
g/s {lb/min} |
|
|
Approx. 0.72
|
0.65 {0.086}
|
Ignition switched ON (engine off)
|
|
Approx. 0.86
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2.78 {0.368}
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Idle (after warm up)
|
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Approx. 1.14
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7.74 {1.02}
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Racing (Engine speed: 2,000 rpm)
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Voltage Inspection
1. Remove the MAF sensor/IAT sensor No.1 without disconnect the connector. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
2. Connect the M-MDS to the DLC-2.
3. Switch the ignition ON (engine off).
4. As the air gradually approaches the MAF detection part of the MAF sensor/IAT sensor No.1, verify that the MAF sensor output voltage (PID: MAF) varies. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].)
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Specification (Reference)
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