REMOVAL AND INSTALLATION <Except for 4G1>



Removal steps
<<A>>
1.
 Exhaust main muffler


2.
 Exhaust muffler hanger
<<B>>
 >>B<<
 3.
 Oxygen sensor (rear)


4.
 Centre exhaust pipe
<<C>>
 >>A<<
 5.
 Oxygen sensor (front)


6.
 Front exhaust pipe


7.
 Exhaust muffler hanger


8.
 Seal ring

REMOVAL SERVICE POINTS

<<A>> EXHAUST MAIN MUFFLER REMOVAL

caution Before removing the exhaust main muffler, be sure to support the centre exhaust pipe with a transmission jack to avoid damage to oxygen sensor wiring.

<<B>> OXYGEN SENSOR (REAR) REMOVAL
1.
caution
  • Do not pull the oxygen sensor harness from underneath the vehicle because the tape securing the vehicle-side oxygen sensor connector may be broken.
  • Do not remove the tape securing the vehicle-side oxygen sensor connector because it may cause abnormal sound and water ingress.
Remove the front seat assembly (LH) (Refer to GROUP 52A, Front Seat Assembly ).
2.Remove the cowl side trim (LH) and front scuff plate (LH) (Refer to GROUP 52A, Trim ) <COLT>.
3.Remove the cowl side trim (LH) and front scuff plate (LH) (Refer to GROUP 52A, Trim ) <COLT CZ3>.
4.Remove the floor console (Refer to GROUP 52A, Floor Console ).
5.Turn over the floor mat and disconnect the oxygen sensor connector.
6.Remove the grommet through the service hole and take the oxygen sensor harness out of the vehicle.

7.Use special tool oxygen sensor wrench (MB991953) to remove the oxygen sensor.

<<C>> OXYGEN SENSOR (FRONT) REMOVAL
1.Remove the console side cover (RH) (Refer to GROUP 52A, Floor Console ).
2.Turn over the floor mat and disconnect the oxygen sensor connector.
3.Remove the grommet through the service hole and take the oxygen sensor harness out of the vehicle.

4.Use special tool oxygen sensor wrench (MB991953) to remove the oxygen sensor.

INSTALLATION SERVICE POINTS

>>A<< OXYGEN SENSOR (FRONT) INSTALLATION

1.Tighten the oxygen sensor to the specified torque by using special tool oxygen sensor wrench (MB991953).
Tightening torque: 50 ± 10 N·m
2.Route the oxygen sensor harness through the service hole into the vehicle, and install the grommet.
3.Connect the oxygen sensor connector and return the floor mat to the original state.
4.Install the console side cover (RH) (Refer to GROUP 52A, Floor Console ).

>>B<< OXYGEN SENSOR (REAR) INSTALLATION

1.Tighten the oxygen sensor to the specified torque by using special tool oxygen sensor wrench (MB991953).
Tightening torque: 50 ± 10 N·m
2.Route the oxygen sensor harness through the service hole into the vehicle, and install the grommet.
3.Connect the oxygen sensor connector and return the floor mat to the original state.
4.Install the floor console (Refer to GROUP 52A, Floor Console ).
5.Install the cowl side trim (LH) and front scuff plate (LH) (Refer to GROUP 52A, Trim ) <COLT>.
6.Install the cowl side trim (LH) and front scuff plate (LH) (Refer to GROUP 52A, Trim ) <COLT CZ3>.
7.Install the front seat assembly (LH) (Refer to GROUP 52A, Front Seat Assembly ).