HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [MZI-3.7 (PCM CONNECTOR (3 TYPES))]


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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.

HO2S (LH) Removal/Installation

1.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

2.  Disconnect the HO2S (LH) connector.

Note
•  If necessary, lubricate the HO2S (LH) with Penetrating and Lock Lubricant loosen to aid in removal.

3.  Remove the HO2S (LH) using the SST.

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Note
•  Apply a light coat of anti-seize lubricant to the threads of the HO2S.

4.  Install in the reverse order of removal.


HO2S (RH) Removal/Installation (L.H.D.)

1.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

2.  Remove the cowl panel for easier access. (See COWL PANEL REMOVAL/INSTALLATION.)

3.  Disconnect the HO2S (RH) connector.

Note
•  If necessary, lubricate the HO2S (RH) with Penetrating and Lock Lubricant loosen to aid in removal.

4.  Remove the HO2S (RH) using the SST.

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Note
•  Apply a light coat of anti-seize lubricant to the threads of the HO2S.

5.  Install in the reverse order of removal.


HO2S (RH) Removal/Installation (R.H.D.)

1.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

2.  Remove the following part for easier access:

1.  Cowl panel (See COWL PANEL REMOVAL/INSTALLATION.)
2.  Engine hanger installation bolt, and power steering oil pump hose out of the way (See POWER STEERING OIL PUMP REMOVAL/INSTALLATION [R.H.D.].)

3.  Disconnect the HO2S (RH) connector.

4.  Remove the front wheel and tire (RH). (See GENERAL PROCEDURES (SUSPENSION).)

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

6.  Disconnect the front drive shaft (RH) from the transaxle side. (See FRONT DRIVE SHAFT REMOVAL/INSTALLATION.)

Note
•  If necessary, lubricate the HO2S (RH) with Penetrating and Lock Lubricant loosen to aid in removal.

7.  Remove the HO2S (RH) using the SST.

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Note
•  Apply a light coat of anti-seize lubricant to the threads of the HO2S.

8.  Install in the reverse order of removal.