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EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8]

EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8]

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Exhaust Gas Pressure Sensor No.1

Warning
•  A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.

Visual inspection

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

3.  Remove the exhaust gas pressure sensor No.1. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

4.  Visually inspect the exhaust gas pressure sensor No.1 for the following malfunction:

•  Damage, cracks, dirt
―  If there is any malfunction, repair or replace the exhaust gas pressure sensor No.1. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

5.  Visually inspect the air hose for the following malfunction:

•  Air hose for improper routing, kinks or leakage
―  If there is any malfunction, repair or replace the malfunctioning part according to the inspection results.


Voltage inspection

1.  Switch the ignition ON (engine off).

2.  Connect the M-MDS to the DLC-2.

3.  Start the engine.

4.  Access the PID/DATA monitor item EX_PRES using the M-MDS. (See PID/DATA MONITOR INSPECTION.)(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)

5.  Verify that the PID EX_PRES value increases when the accelerator pedal is depressed.

•  If it cannot be verified, replace exhaust gas pressure sensor No.1. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Specification (Reference)

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Exhaust Gas Pressure Sensor No.2

Warning
•  A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.

Visual inspection

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2.  Lift up the vehicle.

3.  Remove the front splash shield (RH). (See SPLASH SHIELD REMOVAL/INSTALLATION.)

4.  Remove the front under cover No.2. (See FRONT UNDER COVER No.2 REMOVAL/INSTALLATION.)

5.  Remove the exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

6.  Visually inspect the exhaust gas pressure sensor No.2 for the following malfunction:

•  Damage, cracks, dirt
―  If there is any malfunction, repair or replace the exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

7.  Visually inspect the air hose for the following malfunction:

•  Air hose for improper routing, kinks or leakage
―  If there is any malfunction, repair or replace the malfunctioning part according to the inspection results.


Voltage inspection

1.  Switch the ignition ON (engine off).

2.  Connect the M-MDS to the DLC-2.

3.  Start the engine.

4.  Access the PID/DATA monitor item EX_GAS_DIF_PRES using the M-MDS. (See PID/DATA MONITOR INSPECTION.)(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)

5.  Start the engine.

6.  Verify that the PID EX_GAS_DIF_PRES value increases when the accelerator pedal is depressed.

•  If it cannot be verified, replace the exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Specification (Reference)

am2zzw00012006


Unit inspection

1.  Switch the ignition ON (engine off).

2.  Connect the M-MDS to the DLC-2.

3.  Access the PID/DATA monitor item EX_GAS_DIF_PRES using the M-MDS. (See PID/DATA MONITOR INSPECTION.)(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)

4.  When the ignition is switched ON, verify the value of the PID item EX_GAS_DIF_PRES.

•  If the monitoring value is within the range of +/- 2kPa, go to the next step.
•  If the monitoring value is outside of the range of +/- 2kPa, replace exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

5.  Disconnect the air hose at the position shown in the figure.

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6.  Install the Mityvac to the position shown in the figure.

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7.  Verify the Mityvac gauge value and PID item EX_GAS_DIF_PRES when pressure is applied to exhaust gas pressure sensor No.2.

•  If the difference between the Mityvac gauge value and the value of the PID item EX_GAS_DIF_PRES is within the range of +/-3.5 kPa, go to the next step.
•  If the difference between the Mityvac gauge value and the value of the PID item EX_GAS_DIF_PRES is outside of the range of +/-3.5 kPa, replace exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

8.  Install the Mityvac to the position shown in the figure.

am3zzw00031303

9.  Verify the value of the PID item EX_GAS_DIF_PRES when 110 kPa of pressure is applied to exhaust gas pressure sensor No.2.

•  If the value of the PID item EX_GAS_DIF_PRES is 0 kPa or more, replace exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)