Installation [12/2019 - ]: Procedure

1. Clean the installation surfaces and bolt holes of the exhaust pipe gas control actuator sub-assembly and front exhaust pipe assembly (TWC: Rear Catalyst).
   NOTE:

   Make sure no foreign matter enters the exhaust pipe gas control actuator sub-assembly and front exhaust pipe assembly (TWC: Rear Catalyst).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Apply clean engine coolant to the O-ring.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Exhaust Pipe Gas Control Actuator
   *a	O-ring
   *b	Piston

   NOTE:

   • When installing the exhaust pipe gas control actuator, do not push on the piston.
   • Make sure that the exhaust pipe gas control actuator is free of oil.
3. Using a screwdriver with its tip wrapped with protective tape, secure the exhaust gas control valve in the open position as shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Protective Tape
   *b	Exhaust Gas Control Valve

4. Install a new exhaust pipe gas control actuator gasket and the exhaust pipe gas control actuator sub-assembly with the 2 bolts.

   Torque: 5.0 N.m (51 kgf/cm, 44 in.lbf) 

   NOTE:

   • Check that the O-ring is not deformed, cracked or swollen.
   • Make sure that the exhaust pipe gas control actuator gasket and exhaust pipe gas control actuator sub-assembly are free of oil.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Exhaust Pipe Gas Control Actuator Gasket
   *2	Exhaust Pipe Gas Control Actuator Sub-assembly

5. Connect the outlet heater water hose D and inlet heater water hose D to the No. 2 outlet water pipe and inlet water pipe and slide the 2 clips to secure them.
   NOTE:

   When installing the outlet heater water hose D and inlet heater water hose D, ensure that the exhaust heat recirculation system is filled with coolant. Otherwise, the engine water pump assembly may be damaged.

Refer to PROCEDURE - Step 2

Refer to PROCEDURE - Step 1