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NOx SENSOR INSPECTION [SKYACTIV-D 1.8]

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DTC Inspection

1. Connect the M-MDS to the DLC-2.

2. Perform the DTC inspection using the M-MDS. (See DTC INSPECTION.)

• If any DTC related to the NOx sensor is present, repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D)].)

Visual Inspection

Caution

• Do not disconnect the connector between the NOx sensor control module and NOx sensor. Otherwise, it could adversely affect the NOx sensor control module.

• To prevent a malfunction, do not clean the NOx sensor.

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

2. Remove the NOx sensor. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

3. Visually inspect the NOx sensor for the following malfunction:

• Damage, cracks, soiling

• Sensor end clogging

• Rusted sensor terminal

• Bent sensor terminal

• Damage to exterior of wiring harness

― If there is any malfunction, repair or replace the NOx sensor. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)