DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Intake / Exhaust System (A25A-FXS) - Service Information) >> Exhaust Pipe >> Removal [10/2022 - ] >> Procedure

Removal [10/2022 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. DRAIN ENGINE COOLANT (for Engine) 

    w/ Exhaust Heat Recirculation:

    Refer to PROCEDURE - Step 1

  2. REMOVE TAIL EXHAUST PIPE ASSEMBLY 
    WARNING:

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

    1. Remove the 2 bolts and disconnect the tail exhaust pipe assembly from the front exhaust pipe assembly (TWC: Rear Catalyst).
      GTY880711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the tail exhaust pipe assembly from the 4 exhaust pipe supports.
    3. Remove the gasket from the front exhaust pipe assembly (TWC: Rear Catalyst).
  3. REMOVE AIR FUEL RATIO SENSOR (for Sensor 2) 

    Refer to REMOVAL [12/2019 - ]

  4. REMOVE FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst) 
    WARNING:

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

    1. w/ Exhaust Heat Recirculation:
      GTY938334Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Outlet Heater Water Hose D
      *2 Inlet Heater Water Hose D
      *a No. 2 Outlet Water Pipe
      *b Inlet Water Pipe
      1. Slide the 2 clips and disconnect the outlet heater water hose D and inlet heater water hose D from the No. 2 outlet water pipe and inlet water pipe.
    2. w/ Exhaust Heat Recirculation:
      GTY880675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 2 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust manifold (TWC: Front Catalyst).
      2. Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the 2 exhaust pipe supports.
      3. Remove the gasket from the front exhaust pipe assembly (TWC: Rear Catalyst).
    3. w/o Exhaust Heat Recirculation:
      GTY1105605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 2 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust manifold (TWC: Front Catalyst).
      2. Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the 2 exhaust pipe supports.
      3. Remove the gasket from the front exhaust pipe assembly (TWC: Rear Catalyst).
Diesel-Data.com