- Replacement of air fuel ratio sensor
- Gas leak from exhaust system is repaired
| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001H4Z9 |
| Model Year Start: 2019 | Model: RAV4 HV | Prod Date Range: [02/2019 - 08/2020] |
| Title: A25A-FXS (INTAKE / EXHAUST): EXHAUST MANIFOLD: REMOVAL; 2019 - 2020 MY RAV4 HV [02/2019 - 08/2020] | ||
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold removal/installation are shown below.
Necessary Procedures After Parts Removed/Installed/Replaced
|
Replaced Part or Performed Procedure |
Necessary Procedure |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
|---|---|---|---|
|
|
Inspection After Repair |
|
|
CAUTION:
-
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
-
To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
PROCEDURE
1. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY
Click here
![2019 - 2025 MY RAV4 HV [11/2018 - ]; A25A-FXS (LUBRICATION): OIL LEVEL SENSOR: REMOVAL+](/t3Portal/stylegraphics/info.gif)
2. REMOVE ENGINE UNDER COVER HEAT INSULATOR
Click here
3. REMOVE FRONT EXHAUST PIPE ASSEMBLY
CAUTION:
To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
|
(a) Detach the 2 wire harness clamps. |
|
(b) Disconnect the air fuel ratio sensor (for Sensor 2) connector.
|
(c) Remove the 2 bolts, 2 nuts and disconnect the front exhaust pipe assembly from the exhaust manifold and tail exhaust pipe assembly. |
|
(d) Remove the front exhaust pipe assembly from the 2 exhaust pipe supports.
(e) Remove the 2 gaskets from the front exhaust pipe assembly.
4. REMOVE AIR FUEL RATIO SENSOR (for Sensor 1)
Click here
5. REMOVE WIRE HARNESS CLAMP BRACKET
CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
|
(a) Remove the bolt and wire harness clamp bracket. |
|
6. SEPARATE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
|
(a) Remove the 5 bolts and separate the No. 1 exhaust manifold heat insulator from the exhaust manifold. |
|
7. SEPARATE NO. 1 UPPER FRONT FLOOR HEAT INSULATOR
CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
|
(a) Remove the 2 nuts and separate the No. 1 upper front floor heat insulator from the vehicle body. |
|
8. REMOVE MANIFOLD STAY
CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
|
(a) Remove the bolt, nut and manifold stay from the exhaust manifold and cylinder block sub-assembly. |
|
9. REMOVE EXHAUST MANIFOLD
CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
|
(a) Using a 12 mm deep socket wrench, remove the 7 nuts and separate the exhaust manifold from the cylinder head sub-assembly. |
|
(b) Remove the No. 1 upper front floor heat insulator, No. 1 exhaust manifold heat insulator and exhaust manifold.
|
(c) Remove the exhaust manifold to head gasket from the cylinder head sub-assembly. |
|
10. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
|
(a) Remove the 6 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold. |
|
|
|