Engine Control System (1AR-FE) (Service Information)(except Hybrid): Other Toyota Highlander III

PROCEDURE

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch on. Inspect the camshaft timing oil control valve assembly (for intake side). Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank1). Powertrain > Engine > Active Test Tester Display Control the VVT Linear (Bank1) Check the engine speed while operating the camshaft timing oil control valve assembly using the Techstream. Standard Condition Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: If the result is not as specified, allow the engine to cool (engine coolant temperature of 50°C (122°F) or less) and perform the Active Test again. DTCs related to the VVT system may be stored due to Active Test operation, but this does not indicate a malfunction. If the operation is not as specified, check the camshaft timing oil control valve assembly, wire harness and ECM. Inspect the camshaft timing oil control valve assembly (for exhaust side). Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank1). Powertrain > Engine > Active Test Tester Display Control the VVT Exhaust Linear (Bank1) Check the engine speed while operating the camshaft timing oil control valve assembly using the Techstream. Standard Condition Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: If the result is not as specified, allow the engine to cool (engine coolant temperature of 50°C (122°F) or less) and perform the Active Test again. DTCs related to the VVT system may be stored due to Active Test operation, but this does not indicate a malfunction. If the operation is not as specified, check the camshaft timing oil control valve assembly, wire harness and ECM.

Scheme 219

Scheme 220

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 24»(ref-636178-S39887542832014070700000)
2. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (for Exhaust Side) Disconnect the camshaft timing oil control valve assembly connector. Remove the bolt and camshaft timing oil control valve assembly from the cylinder head cover sub-assembly. NOTE: Do not allow foreign matter to contact the oil seal face of the camshaft timing oil control valve assembly (connecting surface with the cylinder head cover sub-assembly). If the camshaft timing oil control valve assembly has been struck or dropped, replace it. Remove the O-ring from the camshaft timing oil control valve assembly. *1 O-ring
3. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (for Intake Side) Disconnect the camshaft timing oil control valve assembly connector. Remove the bolt and camshaft timing oil control valve assembly from the cylinder head cover sub-assembly. NOTE: Do not allow foreign matter to contact the oil seal face of the camshaft timing oil control valve assembly (connecting surface with the cylinder head cover sub-assembly). If the camshaft timing oil control valve assembly has been struck or dropped, replace it. Remove the O-ring from the camshaft timing oil control valve assembly. *1 O-ring

Scheme 221

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms If the result is not as specified, replace the camshaft timing oil control valve assembly. Check the operation. Connect a battery positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and check the movement of the spool valve. *a Component without harness connected (Camshaft Timing Oil Control Valve Assembly) *b When Applied *c When Cut Off *d Spool Valve OK Condition Specified Condition Battery voltage is applied Valve moves in left arrow direction shown in illustration Battery voltage is cut off Valve moves in right arrow direction shown in illustration NOTE: Accumulation of foreign matter can cause minor pressure leaks. Minor pressure leaks in the intake side camshaft timing oil control valve assembly will cause the intake camshaft to advance. Minor pressure leaks in the exhaust side camshaft timing oil control valve assembly will cause the exhaust camshaft to retard. The inappropriate camshaft timing that results from these leaks will cause a DTC to be stored. If the result is not as specified, replace the camshaft timing oil control valve assembly.

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (for Intake Side) Apply a light coat of engine oil to a new O-ring and install it to the camshaft timing oil control valve assembly. Install the camshaft timing oil control valve assembly to the cylinder head cover sub-assembly with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: If the camshaft timing oil control valve assembly has been struck or dropped, replace it. Do not allow foreign matter to contact the oil seal face of the camshaft timing oil control valve assembly (connecting surface with the cylinder head cover sub-assembly). Make sure that the O-ring is not cracked or moved out of place when installing the camshaft timing oil control valve assembly. Connect the camshaft timing oil control valve assembly connector.
2. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (for Exhaust Side) Apply a light coat of engine oil to a new O-ring and install it to the camshaft timing oil control valve assembly. Install the camshaft timing oil control valve assembly to the cylinder head cover sub-assembly with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: If the camshaft timing oil control valve assembly has been struck or dropped, replace it. Do not allow foreign matter to contact the oil seal face of the camshaft timing oil control valve assembly (connecting surface with the cylinder head cover sub-assembly). Make sure that the O-ring is not cracked or moved out of place when installing the camshaft timing oil control valve assembly. Connect the camshaft timing oil control valve assembly connector.
3. INSPECT FOR ENGINE OIL LEAK Refer to «PROCEDURE - Step 5»(ref-636180-S01056603972014070700000)
4. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 67»(ref-636178-S37077056932014070700000)

Scheme 222

Scheme 223

*1 FUEL HOSE BRACKET *2 THROTTLE BODY GASKET *3 THROTTLE BODY WITH MOTOR ASSEMBLY *4 FUEL TUBE SUB-ASSEMBLY *5 NO. 1 WATER BY-PASS HOSE *6 NO. 2 WATER BY-PASS HOSE N*m (kgf*cm, ft.*lbf): Specified torque • Non-reusable part

1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY Check the throttle control motor operating sound. Turn the ignition switch to ON. When depressing the accelerator pedal, check the operating sound of the throttle control motor. Make sure that no friction noise is emitted from the throttle control motor. If any friction noise exists, replace the throttle body with motor assembly. Check the throttle position sensor. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Throttle Sensor Position. Powertrain > Engine > Data List Tester Display Throttle Sensor Position Fully depress the accelerator pedal. When the throttle valve is fully open, check that the Throttle Sensor Position value is within specification. Standard Throttle Valve Opening Percentage Tester Display Specified Condition Throttle Sensor Position 60% or higher NOTE: When checking the throttle valve opening percentage, the shift lever should be in P or N. Fully depress the accelerator pedal. If the percentage is less than 60%, check the throttle body with motor assembly, wire harness and ECM.

Scheme 224

Scheme 225

Scheme 226

Scheme 227

1. DRAIN ENGINE COOLANT Refer to «PROCEDURE - Step 1»(ref-636182-S35365672812014070700000)
2. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 24»(ref-636178-S39887542832014070700000)
3. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE Disconnect the mass air flow meter sub-assembly connector and disengage the wire harness clamp. Disengage the hose clamp and disconnect the vacuum switching valve assembly from the No. 1 air cleaner hose. Disengage the hose clamp. Slide the clip and disconnect the vacuum hose from the No. 1 air cleaner hose. Slide the clip and disconnect the ventilation hose from the cylinder head cover sub-assembly. Disengage the 2 air cleaner cap clamps. Loosen the hose clamp and remove the air cleaner cap with air cleaner hose from the throttle body with motor assembly.
4. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY Disconnect the throttle body with motor assembly connector. Disengage the fuel tube sub-assembly from the clamp. Slide the 2 clips and disconnect the No. 1 water by-pass hose and No. 2 water by-pass hose from the throttle body with motor assembly. *1 No. 1 Water By-pass Hose *2 No. 2 Water By-pass Hose Remove the 4 bolts and throttle body with motor assembly from the intake manifold. NOTE: If the throttle body with motor assembly has been struck or dropped, replace it.
5. REMOVE FUEL HOSE BRACKET Remove the bolt and fuel hose bracket from the throttle body with motor assembly.
6. REMOVE THROTTLE BODY GASKET Remove the throttle body gasket from the intake manifold.

1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Throttle Body with Motor Assembly) Standard Resistance Tester Connection Condition Specified Condition 1 (M-) - 2 (M+) 20°C (68°F) 0.3 to 100 ohms If the result is not as specified, replace the throttle body with motor assembly.

Scheme 228

1. INSTALL THROTTLE BODY GASKET Install a new throttle body gasket to the intake manifold with the protrusions of the throttle body gasket oriented as shown in the illustration. *a Protrusion
2. INSTALL FUEL HOSE BRACKET Install the fuel hose bracket to the throttle body with motor assembly with the bolt. Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)
3. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY Install the throttle body with motor assembly to the intake manifold with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: If the throttle body with motor assembly has been struck or dropped, replace it. Connect the No. 1 water by-pass hose and No. 2 water by-pass hose to the throttle body with motor assembly and slide the 2 clips to secure them. Engage the fuel tube sub-assembly to the clamp. Connect the throttle body with motor assembly connector.
4. INSTALL AIR CLEANER CAP WITH AIR CLEANER HOSE Install the air cleaner cap with air cleaner hose to the throttle body with motor assembly. Engage the 2 air cleaner cap clamps. Tighten the hose clamp. Connect the ventilation hose to the cylinder head cover sub-assembly and slide the clip to secure it. Connect the vacuum hose to the No. 1 air cleaner hose and slide the clip to secure it. Engage the hose clamp. Connect the vacuum switching valve assembly to the No. 1 air cleaner hose and engage the hose clamp. Connect the mass air flow meter sub-assembly connector and engage the wire harness clamp.
5. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 67»(ref-636178-S37077056932014070700000)
6. ADD ENGINE COOLANT Refer to «PROCEDURE - Step 2»(ref-636182-S35365672812014070700000)
7. INSPECT FOR COOLANT LEAK Refer to «PROCEDURE - Step 1»(ref-636212-S32408136032014070700000)
8. PERFORM INITIALIZATION NOTE: Be sure to perform this procedure after removing and reinstalling the throttle body with motor assembly or any throttle body with motor assembly components. Perform the following procedure after replacing the throttle body with motor assembly or any throttle body with motor assembly components. The following procedure should also be performed if the throttle body with motor assembly is cleaned. Connect the Techstream to the DLC3 and clear the DTCs. Refer to «DTC CHECK / CLEAR [12/2013 - ]»(ref-636035-S20861638992014070700000) Turn the ignition switch to ON without operating the accelerator pedal. Perform the "Inspection After Repair". Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Start the engine and check that the MIL is not illuminated. After the engine is warmed up, check that the idle speed is within the specified range with the A/C switch off. Standard Idle Speed 600 to 700 RPM NOTE: Be sure to perform this step with all accessories off. Make sure that the shift lever is in P or N. Enter the following menus: Powertrain / Engine / Data List / Throttle Sensor Position. Powertrain > Engine > Data List Tester Display Throttle Sensor Position Fully depress the accelerator pedal and check that the value is 60% or higher. Perform a road test and confirm that there are no abnormalities.

Scheme 229

*1 AIR CLEANER ASSEMBLY *2 ECM *3 ECM BRACKET *4 NO. 2 ECM BRACKET N*m (kgf*cm, ft.*lbf): Specified torque

Scheme 230

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Scheme 232

1. PRECAUTION NOTE: Perform the Vehicle Identification Number (VIN) registration when replacing the ECM. Refer to «REGISTRATION [12/2013 - ]»(ref-636035-S35457295232014070700000) After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notice before proceeding with work. Refer to «PRECAUTION [12/2013 - ]»(ref-636009-S40161171922014070700000)
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION [12/2013 - ]»(ref-636009-S07395919032014070700000)
3. REMOVE AIR CLEANER ASSEMBLY Disconnect the mass air flow meter sub-assembly connector and disengage the wire harness clamp. Remove the 2 bolts from the air cleaner assembly. Loosen the hose clamp and separate the air cleaner assembly from the No. 1 air cleaner hose. Separate the air cleaner assembly from the inlet air cleaner assembly. Disengage the clamp to remove the air cleaner assembly.
4. REMOVE ECM Raise the 2 levers while pushing the locks on the levers, and disconnect the 2 ECM connectors. NOTE: After disconnecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors. Disengage the wire harness clamp. Remove the 3 bolts and ECM. NOTE: If the ECM has been struck or dropped, replace it.
5. REMOVE ECM BRACKET Remove the 2 screws and ECM bracket from the ECM.
6. REMOVE NO. 2 ECM BRACKET Remove the 2 screws and No. 2 ECM bracket from the ECM.

Scheme 233

1. INSTALL NO. 2 ECM BRACKET Install the No. 2 ECM bracket to the ECM with the 2 screws. Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf)
2. INSTALL ECM BRACKET Install the ECM bracket to the ECM with the 2 screws. Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf)
3. INSTALL ECM Install the ECM with the 3 bolts. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) NOTE: If the ECM has been struck or dropped, replace it. Engage the wire harness clamp. Connect the 2 ECM connectors and lower the 2 levers. NOTE: When connecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors. Be sure to securely connect the ECM connectors.
4. INSTALL AIR CLEANER ASSEMBLY Engage the clamp to set the air cleaner assembly. Install the air cleaner assembly to the inlet air cleaner assembly. Install the air cleaner assembly to the No. 1 air cleaner hose and tighten the hose clamp. Install the 2 bolts to the air cleaner assembly. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) Connect the mass air flow meter sub-assembly connector and engage the wire harness clamp.
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION [12/2013 - ]»(ref-636009-S07395919032014070700000)
6. PERFORM INITIALIZATION Refer to «INITIALIZATION [12/2013 - ]»(ref-636009-S07395919032014070700000)

Scheme 234

*1 ACCELERATOR PEDAL SENSOR ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque

1. INSPECT ACCELERATOR PEDAL SENSOR ASSEMBLY Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Powertrain > Engine > Data List Tester Display Accel Sensor Out No. 1 Accel Sensor Out No. 2 Read the values displayed on the Techstream. Standard Voltage Tester Display Condition Specified Condition Accel Sensor Out No. 1 Accelerator pedal is fully released 0.5 to 1.1 V Accelerator pedal is fully depressed 2.6 to 4.5 V Accel Sensor Out No. 2 Accelerator pedal is fully released 1.2 to 2.0 V Accelerator pedal is fully depressed 3.4 to 4.75 V If the result is not as specified, check the accelerator pedal sensor assembly, wire harness and ECM.

Scheme 235

1. REMOVE ACCELERATOR PEDAL SENSOR ASSEMBLY NOTE: Avoid physical shock to the accelerator pedal sensor assembly. Do not disassemble the accelerator pedal sensor assembly. The accelerator pedal sensor assembly does not require lubrication. Do not apply oil or other lubricants to the accelerator pedal sensor assembly. If applied, the accelerator pedal sensor assembly must be replaced. Disconnect the accelerator pedal sensor assembly connector. Remove the 2 nuts and accelerator pedal sensor assembly. NOTE: If the accelerator pedal sensor assembly has been struck or dropped, replace it.

1. INSTALL ACCELERATOR PEDAL SENSOR ASSEMBLY NOTE: Avoid physical shock to the accelerator pedal sensor assembly. Do not disassemble the accelerator pedal sensor assembly. The accelerator pedal sensor assembly does not require lubrication. Do not apply oil or other lubricants to the accelerator pedal sensor assembly. If applied, the accelerator pedal sensor assembly must be replaced. Install the accelerator pedal sensor assembly with the 2 nuts. Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) NOTE: If the accelerator pedal sensor assembly has been struck or dropped, replace it. Connect the accelerator pedal sensor assembly connector.

Scheme 236

CAUTION / NOTICE / HINT

Note. Perform the mass air flow meter sub-assembly inspection according to the following procedure. Only replace the mass air flow meter sub-assembly when the mass air flow meter sub-assembly value in the Data List (with the engine stopped) is not within the normal operating range or there is foreign matter on the mass air flow meter sub-assembly platinum hot wire (heater).

1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Read the value using the Techstream (MAF). NOTE: Perform the inspection with the vehicle indoors and on a level surface. Perform the inspection of the mass air flow meter sub-assembly while it is installed to the air cleaner cap sub-assembly (installed to the vehicle). During the test, do not use an exhaust air duct on the exhaust pipe. Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / MAF. Powertrain > Engine > Data List Tester Display MAF Wait for 30 seconds, and read the value on the Techstream. Standard Condition Tester Display Condition Standard Condition MAF Engine not running 30 seconds after ignition switch turned to ON 0.49 gm/sec or less If the result is not as specified, replace the mass air flow meter sub-assembly. If the result is within the specified range, inspect the mass air flow meter sub-assembly. Refer to «INSPECTION [12/2013 - ]»(ref-636201-S25404737752014070700000)
2. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

Scheme 237

1. REMOVE MASS AIR FLOW METER SUB-ASSEMBLY Disconnect the mass air flow meter sub-assembly connector. Remove the 2 screws and mass air flow meter sub-assembly from the air cleaner cap sub-assembly. NOTE: If the mass air flow meter sub-assembly has been struck or dropped, replace it.

Scheme 238

1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Perform a visual check for any foreign matter on the platinum hot wire (heater) and temperature sensor (thermistor) of the mass air flow meter sub-assembly shown in the illustration. *a Platinum Hot Wire (Heater) *b Temperature Sensor (Thermistor) OK There is no foreign matter. If the result is not as specified, replace the mass air flow meter sub-assembly. Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Mass Air Flow Meter Sub-assembly) Standard Resistance Tester Connection Condition Specified Condition 1 (THA) - 2 (E2) -20°C (-4°F) 13.6 to 18.4 kohms 20°C (68°F) 2.21 to 2.69 kohms 60°C (140°F) 0.49 to 0.67 kohms If the result is not as specified, replace the mass air flow meter sub-assembly.

1. INSTALL MASS AIR FLOW METER SUB-ASSEMBLY HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Install the mass air flow meter sub-assembly to the air cleaner cap sub-assembly with the 2 screws. NOTE: If the mass air flow meter sub-assembly has been struck or dropped, replace it. If reusing the mass air flow meter sub-assembly, be sure to inspect the O-ring. Make sure that the O-ring is not cracked or moved out of place when installing the mass air flow meter sub-assembly. Connect the mass air flow meter sub-assembly connector.
2. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

Scheme 239

*1 CAMSHAFT POSITION SENSOR (for Exhaust Side) *2 NO. 1 ENGINE COVER SUB-ASSEMBLY *3 CAMSHAFT POSITION SENSOR (for Intake Side) - - N*m (kgf*cm, ft.*lbf): Specified torque Adhesive 1324 * Precoated part

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 24»(ref-636178-S39887542832014070700000)
2. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side) Disconnect the camshaft position sensor connector. Remove the bolt and camshaft position sensor from the cylinder head cover sub-assembly. NOTE: If the camshaft position sensor has been struck or dropped, replace it.
3. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side) Disconnect the camshaft position sensor connector. Remove the bolt and camshaft position sensor from the cylinder head cover sub-assembly. NOTE: If the camshaft position sensor has been struck or dropped, replace it.

Scheme 240

1. INSTALL CAMSHAFT POSITION SENSOR (for Intake Side) Apply adhesive to 2 or 3 threads of the bolt for the camshaft position sensor. *a Adhesive Adhesive Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent. Apply a light coat of engine oil to the O-ring of the camshaft position sensor. *a O-ring Install the camshaft position sensor to the cylinder head cover sub-assembly with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: If the camshaft position sensor has been struck or dropped, replace it. Make sure that the O-ring is not cracked or does not move out of place during installation. Connect the camshaft position sensor connector.
2. INSTALL CAMSHAFT POSITION SENSOR (for Exhaust Side) Apply adhesive to 2 or 3 threads of the bolt for the camshaft position sensor. *a Adhesive Adhesive Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent. Apply a light coat of engine oil to the O-ring of the camshaft position sensor. *a O-ring Install the camshaft position sensor to the cylinder head cover sub-assembly with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: If the camshaft position sensor has been struck or dropped, replace it. Make sure that the O-ring is not cracked or does not move out of place during installation. Connect the camshaft position sensor connector.
3. INSPECT FOR ENGINE OIL LEAK Refer to «PROCEDURE - Step 5»(ref-636180-S01056603972014070700000)
4. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 67»(ref-636178-S37077056932014070700000)

Scheme 241

*1 CRANKSHAFT POSITION SENSOR *2 FRONT FENDER APRON SEAL RH N*m (kgf*cm, ft.*lbf): Specified torque Adhesive 1324 * Precoated part

1. REMOVE FRONT FENDER APRON SEAL RH Refer to «PROCEDURE - Step 14»(ref-636178-S39887542832014070700000)
2. REMOVE CRANKSHAFT POSITION SENSOR Disconnect the crankshaft position sensor connector. Remove the bolt and crankshaft position sensor from the timing chain cover sub-assembly. NOTE: If the crankshaft position sensor has been struck or dropped, replace it.

1. INSPECT CRANKSHAFT POSITION SENSOR Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Crankshaft Position Sensor) Standard Resistance Tester Connection Condition Specified Condition 1 - 2 Cold 1630 to 2740 ohms Hot 2065 to 3225 ohms HINT: In the table above, the terms "Cold" and "Hot" mean the temperature of the coils themselves. "Cold" is from -10 to 50°C (14 to 122°F) and "Hot" is from 50 to 100°C (122 to 212°F). If the result is not as specified, replace the crankshaft position sensor.

1. INSTALL CRANKSHAFT POSITION SENSOR Apply adhesive to 2 or 3 threads of the bolt for the crankshaft position sensor. *a Adhesive Adhesive Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent. Apply a light coat of engine oil to the O-ring of the crankshaft position sensor. *a O-ring Install the crankshaft position sensor to the timing chain cover sub-assembly with the bolt. Torque: 6.5 N*m (66 kgf*cm, 58 in.*lbf) NOTE: If the crankshaft position sensor has been struck or dropped, replace it. Make sure that the O-ring is not cracked or does not move out of place during installation. Connect the crankshaft position sensor connector.
2. INSPECT FOR ENGINE OIL LEAK Refer to «PROCEDURE - Step 5»(ref-636180-S01056603972014070700000)
3. INSTALL FRONT FENDER APRON SEAL RH Refer to «PROCEDURE - Step 76»(ref-636178-S37077056932014070700000)

Scheme 242

*1 IGNITION COIL ASSEMBLY *2 NO. 1 ENGINE COVER SUB-ASSEMBLY *3 SPARK PLUG - - N*m (kgf*cm, ft.*lbf): Specified torque

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 24»(ref-636178-S39887542832014070700000)
2. REMOVE IGNITION COIL ASSEMBLY Disconnect the 4 ignition coil assembly connectors. Remove the 4 bolts and 4 ignition coil assemblies from the cylinder head cover sub-assembly. NOTE: If an ignition coil assembly has been struck or dropped, replace it. HINT: Arrange the removed parts in the correct order.
3. REMOVE SPARK PLUG Remove the 4 spark plugs from the cylinder head sub-assembly. NOTE: If a spark plug has been struck or dropped, replace it. HINT: Arrange the removed parts in the correct order.

1. INSTALL SPARK PLUG HINT: Perform "Inspection After Repair" after replacing a spark plug. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Install the 4 spark plugs to the cylinder head sub-assembly. Torque: 25 N*m (255 kgf*cm, 18 ft.*lbf) NOTE: If a spark plug has been struck or dropped, replace it. HINT: Install the same parts to their original positions.
2. INSTALL IGNITION COIL ASSEMBLY HINT: Perform "Inspection After Repair" after replacing an ignition coil assembly. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Install the 4 ignition coil assemblies to the cylinder head cover sub-assembly with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: If an ignition coil assembly has been struck or dropped, replace it. HINT: Install the same parts to their original positions. Connect the 4 ignition coil assembly connectors.
3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 67»(ref-636178-S37077056932014070700000)
4. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing a spark plug or ignition coil assembly. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

Scheme 243

*1 AIR CLEANER ASSEMBLY *2 NO. 1 ENGINE COVER SUB-ASSEMBLY N*m (kgf*cm, ft.*lbf): Specified torque

Scheme 244

*1 ENGINE COOLANT TEMPERATURE SENSOR *2 GASKET *3 HEATER BRACKET *4 HEATER HOSE N*m (kgf*cm, ft.*lbf): Specified torque • Non-reusable part

1. DRAIN ENGINE COOLANT Refer to «PROCEDURE - Step 1»(ref-636182-S35365672812014070700000)
2. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 24»(ref-636178-S39887542832014070700000)
3. REMOVE AIR CLEANER ASSEMBLY See step 3
4. REMOVE ENGINE COOLANT TEMPERATURE SENSOR Disengage the heater hose from the heater bracket. Remove the bolt and separate the heater bracket from the cylinder head sub-assembly. Disconnect the engine coolant temperature sensor connector. Using a 19 mm union nut wrench, remove the engine coolant temperature sensor from the cylinder head sub-assembly. NOTE: If the engine coolant temperature sensor has been struck or dropped, replace it. Remove the gasket from the engine coolant temperature sensor.

Scheme 245

1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Engine Coolant Temperature Sensor) Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 2.32 to 2.59 kohms 80°C (176°F) 0.310 to 0.326 kohms NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the engine coolant temperature sensor. If the result is not as specified, replace the engine coolant temperature sensor.

1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Install a new gasket to the engine coolant temperature sensor. Using a 19 mm union nut wrench, install the engine coolant temperature sensor to the cylinder head sub-assembly. Torque: 19.6 N*m (200 kgf*cm, 14 ft.*lbf) NOTE: If the engine coolant temperature sensor has been struck or dropped, replace it. Use the torque value compensation formula to calculate the torque value for use when a torque wrench is combined with a tool such as a union nut wrench. Refer to «PRECAUTION [12/2013 - ]»(ref-636009-S40161171922014070700000) Connect the engine coolant temperature sensor connector. Install the heater bracket to the cylinder head sub-assembly with the bolt. Torque: 12.5 N*m (127 kgf*cm, 9 ft.*lbf) Engage the heater hose to the heater bracket.
2. INSTALL AIR CLEANER ASSEMBLY See step 4
3. ADD ENGINE COOLANT Refer to «PROCEDURE - Step 2»(ref-636182-S35365672812014070700000)
4. INSPECT FOR COOLANT LEAK Refer to «PROCEDURE - Step 1»(ref-636212-S32408136032014070700000)
5. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY Refer to «PROCEDURE - Step 67»(ref-636178-S37077056932014070700000)
6. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

Scheme 246

*1 KNOCK CONTROL SENSOR - - N*m (kgf*cm, ft.*lbf): Specified torque

1. REMOVE INTAKE MANIFOLD Refer to «REMOVAL [12/2013 - ]»(ref-636207-S19299702232014070700000)
2. REMOVE KNOCK CONTROL SENSOR Disconnect the knock control sensor connector. Remove the bolt and knock control sensor from the cylinder block sub-assembly. NOTE: If the knock control sensor has been struck or dropped, replace it.

1. INSPECT KNOCK CONTROL SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 25 °C (77 °F) 120 to 280 kohms If the result is not as specified, replace the knock control sensor. *a Component without harness connected (Knock Control Sensor)

1. INSTALL KNOCK CONTROL SENSOR HINT: Perform "Inspection After Repair" after replacing the knock control sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Install the knock control sensor to the cylinder block sub-assembly with the bolt so that the knock control sensor installation position is as shown in the illustration. *a Top *b Front of Engine *c 7° *d 10° Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) NOTE: If the knock control sensor has been struck or dropped, replace it. Make sure that the knock control sensor is in the correct position. Connect the knock control sensor connector.
2. INSTALL INTAKE MANIFOLD Refer to «INSTALLATION [12/2013 - ]»(ref-636207-S00665329162014070700000)
3. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing the knock control sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

Scheme 247

*1 AIR FUEL RATIO SENSOR - - N*m (kgf*cm, ft.*lbf): Specified torque * For use with SST

Scheme 248

Scheme 249

1. REMOVE AIR FUEL RATIO SENSOR Disengage the hose clamp and separate the air fuel ratio sensor wire from the No. 1 radiator hose. Disconnect the air fuel ratio sensor connector. Disconnect the 2 wire harness clamps from the wire harness clamp bracket. Using SST, remove the air fuel ratio sensor from the exhaust manifold. SST: 09224-00010 NOTE: If the air fuel ratio sensor has been struck or dropped, replace it.

Scheme 250

1. INSPECT AIR FUEL RATIO SENSOR Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Air Fuel Ratio Sensor) Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher If the result is not as specified, replace the air fuel ratio sensor.

Scheme 251

1. INSTALL AIR FUEL RATIO SENSOR HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Using SST, install the air fuel ratio sensor to the exhaust manifold. *a Length of SST 30 mm (1.18 in.) *b Length of Torque Wrench 260 mm (10.2 in.) SST: 09224-00010 without SST [Torque (N*m (kgf*cm, ft.*lbf))] Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) with SST [Reading of Torque wrench (N*m (kgf*cm, ft.*lbf))] Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf) NOTE: If the air fuel ratio sensor has been struck or dropped, replace it. HINT: This torque value is effective when SST is parallel to the torque wrench. The "with SST" torque value is effective when using SST with a fulcrum length of 30 mm (1.18 in.). The "with SST" torque value is effective when using a torque wrench with a fulcrum length of 260 mm (10.2 in.). If using a torque wrench with a different length, or connecting the torque wrench and SST at an angle, refer to the alternate torque values. Refer to «PRECAUTION [12/2013 - ]»(ref-636009-S40161171922014070700000) Connect the 2 wire harness clamps to the wire harness clamp bracket. Connect the air fuel ratio sensor connector. Install the air fuel ratio sensor wire to the No. 1 radiator hose and engage the hose clamp.
2. INSPECT FOR EXHAUST GAS LEAK Refer to «PROCEDURE - Step 8»(ref-636207-S30593306092014070700000)
3. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

Scheme 252

*1 FRONT FLOOR COVER LH *2 HEATED OXYGEN SENSOR N*m (kgf*cm, ft.*lbf): Specified torque * For use with SST

1. REMOVE FRONT FLOOR COVER LH Refer to «PROCEDURE - Step 4»(ref-636207-S02985178172014070700000)
2. REMOVE HEATED OXYGEN SENSOR Disconnect the heated oxygen sensor connector. Disengage the 3 wire harness clamps. Using SST, remove the heated oxygen sensor from the center exhaust pipe assembly. SST: 09224-00010 NOTE: If the heated oxygen sensor has been struck or dropped, replace it.

1. INSPECT HEATED OXYGEN SENSOR Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Heated Oxygen Sensor) Standard Resistance Tester Connection Condition Specified Condition 2 (HT1B) - 1 (+B) 20°C (68°F) 9 to 14 ohms 2 (HT1B) - 3 (E2) Always 10 kohms or higher If the result is not as specified, replace the heated oxygen sensor.

1. INSTALL HEATED OXYGEN SENSOR HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000) Using SST, install the heated oxygen sensor to the center exhaust pipe assembly. *a Length of SST 30 mm (1.18 in.) *b Length of Torque Wrench 260 mm (10.2 in.) SST: 09224-00010 without SST [Torque (N*m (kgf*cm, ft.*lbf))] Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) with SST [Reading of Torque wrench (N*m (kgf*cm, ft.*lbf))] Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf) NOTE: If the heated oxygen sensor has been struck or dropped, replace it. HINT: This torque value is effective when SST is parallel to the torque wrench. The "with SST" torque value is effective when using SST with a fulcrum length of 30 mm (1.18 in.). The "with SST" torque value is effective when using a torque wrench with a fulcrum length of 260 mm (10.2 in.). If using a torque wrench with a different length, or connecting the torque wrench and SST at an angle, refer to the alternate torque values. Refer to «PRECAUTION [12/2013 - ]»(ref-636009-S40161171922014070700000) Engage the 3 wire harness clamps. Connect the heated oxygen sensor connector.
2. INSTALL FRONT FLOOR COVER LH Refer to «PROCEDURE - Step 8»(ref-636207-S07081667432014070700000)
3. INSPECT FOR EXHAUST GAS LEAK Refer to «PROCEDURE - Step 8»(ref-636207-S30593306092014070700000)
4. PERFORM INITIALIZATION Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION [12/2013 - ]»(ref-636035-S12548220812014070700000)

1. INSPECT CIRCUIT OPENING RELAY (C/OPN) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied between terminals 1 and 2 10 kohms or higher Battery voltage applied between terminals 1 and 2 Below 1 ohms If the result is not as specified, replace the circuit opening relay (C/OPN).