Lexus ES: Removal
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 assembly RH (TWC: Front Catalyst) and exhaust manifold assembly LH (TWC: Front Catalyst) 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 |
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CAUTION:
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To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
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To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
PROCEDURE
1. REMOVE FRONT FLOOR COVER LH
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2. REMOVE FRONT FLOOR COVER RH
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3. REMOVE BODY MOUNTING PLATE
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4. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)
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5. REMOVE EXHAUST PIPE ASSEMBLY FRONT (TWC: Rear Catalyst)
| (a) Disconnect the 2 heated oxygen sensor connectors. |
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(b) Disengage the 2 wire harness clamps.
| (c) Remove the 4 bolts, 4 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst). |
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(d) Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust pipe support.
(e) Remove the 3 gaskets from the front exhaust pipe assembly (TWC: Rear Catalyst).
6. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)
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7. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
| (a) Remove the 3 bolts and No. 1 exhaust manifold heat insulator from the exhaust manifold assembly RH (TWC: Front Catalyst). |
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8. REMOVE EXHAUST MANIFOLD ASSEMBLY RH (TWC: Front Catalyst)
| (a) Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly RH (TWC: Front Catalyst) from the cylinder head sub-assembly RH. |
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9. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)
| (a) Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH. |
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10. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH
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11. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH
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12. REMOVE NO. 1 ENGINE UNDER COVER
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13. REMOVE NO. 2 ENGINE UNDER COVER
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14. REMOVE V-BANK COVER SUB-ASSEMBLY
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15. REMOVE COOL AIR INTAKE DUCT SEAL
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16. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)
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17. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE
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18. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
| (a) Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold assembly LH (TWC: Front Catalyst). |
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19. REMOVE NO. 2 MANIFOLD STAY
(a) Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.
.png) | Bolt |
.png) | Nut |
20. DISCONNECT NO. 5 WATER BY-PASS HOSE
| (a) Disengage the 2 clamps to disconnect the No. 5 water by-pass hose and No. 6 water by-pass hose from the hose clamp. |
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21. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)
| (a) Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst). |
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22. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)
| (a) Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly. |
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23. REMOVE STUD BOLT
HINT:
If a stud bolt is deformed or its threads are damaged, replace it.
| (a) Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst). |
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READ NEXT:
Installation
INSTALLATION PROCEDURE 1. INSTALL STUD BOLT HINT: If a stud bolt is deformed or its threads are damaged, replace it. (a) Using an E8 "TORX" socket wrench, install the 2 stud bolts to the exhaust ma
Components
COMPONENTS ILLUSTRATION *A Type A *B Type B *1 FRONT FLOOR COVER RH - - N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *A Type A *B Type B *1
SEE MORE:
Front Sensor Communication Malfunction (C1AEC)
DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the front sensors and the ECU, or when there is a malfunction in a front sensor. DTC No. Detection Item DTC Detection Condition Trouble Area C1AEC Front Sensor Communication Malfunc
Motor/Generator Shutdown Signal (Hybrid/EV Side) Stuck Off (P33B99F)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects malfunctions which prevent the inverter with converter assembly emergency shutdown circuit (HSDN) from shutting down the hybrid control system. Detection is performed when the power switch is turned on (IG) and during the shu
