Engine Control System (Service Information): Removal & Installation Scion tC II

INSTALLATION

1. INSTALL THROTTLE WITH MOTOR BODY ASSEMBLY Install a new gasket to the intake manifold. Install the throttle with motor body assembly with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the throttle position sensor and control motor connector. NOTE: If the fuel hose is detached from the clamp shown in the illustration, the clamp cannot be reused. Connect the fuel hose bracket with the bolt. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) TEXT IN ILLUSTRATION *1 Clamp Connect the No. 2 water by-pass hose to the throttle body. Connect the No. 1 water by-pass hose to the throttle body.
2. INSTALL AIR CLEANER CAP SUB-ASSEMBLY Refer to step 4
3. ADD ENGINE COOLANT . Refer to «REPLACEMENT - Step 4»(ref-451165-S40553739182012020700000)
4. INSPECT FOR COOLANT LEAK . Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-451164-S29335948602012020700000)
5. INSTALL ENGINE UNDER COVER Install the under cover with the 6 bolts and 7 clips.
6. PERFORM INITIALIZATION NOTE: Be sure to perform this procedure after reassembling the throttle body assembly or removing and reinstalling any throttle body component. Perform the following procedure after replacing the ECM, throttle body assembly or any throttle body components. The following procedure should also be performed if the throttle body is cleaned. Be sure to perform this procedure after reconnecting the battery cable or replacing the ECM. Disconnect the EFI NO. 1 and ETCS fuses at the same time. Wait at least 60 seconds and reconnect the fuses. Turn the ignition switch to ON without operating the accelerator pedal. NOTE: If the accelerator pedal is operated, perform the above steps again. Connect the Techstream to the DLC3 and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-451061-S23674878372012020700000) . 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 when the A/C is switched off. Standard Condition Engine Idle Speed A/C switched off 600 to 700 rpm NOTE: Be sure to perform this step with all accessories off. Make sure that the shift lever is in N or P. Enter the following menus: Powertrain / Engine and ETC / Data List / All Data / Throttle Sensor Position. Fully depress the accelerator pedal and check that the value is 60% or more. Perform a road test and confirm that there are no abnormalities.

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1. 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»(ref-451050-S07721597352012020700000) .
2. REMOVE AIR CLEANER CAP SUB-ASSEMBLY Disconnect the mass air flow meter connector. Disconnect the purge VSV connector. Detach the 2 wire harness clamps. Disconnect the 2 purge line hoses. Disconnect the No. 2 ventilation hose from the cylinder head cover. Disconnect the purge line hose from the clamp. Lock the No. 1 air cleaner hose clamp, and then disconnect the No. 1 air cleaner hose from the throttle body. Detach the 2 hook clamps, and then remove the air cleaner cap. Remove the air cleaner filter element from the air cleaner case.
3. REMOVE AIR CLEANER CASE Detach the harness clamp. Remove the 3 bolts and air cleaner case.
4. DISCONNECT AIR CLEANER INLET Remove the bolt and disconnect the air cleaner inlet.
5. REMOVE ECM NOTE: After disconnecting a connector, make sure that dirt, water and other foreign matter does not contact the connector. Disconnect the 2 ECM connectors. TEXT IN ILLUSTRATION *a Push *b Lock Raise the 2 levers while pushing the locks on the 2 levers and disconnect the 2 ECM connectors. Detach the clamp. Remove the 2 bolts and ECM with bracket. Remove the 4 screws and 2 ECM brackets.

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1. INSTALL ECM Install the 2 ECM brackets to the ECM with the 4 screws. Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf) Install the ECM with bracket with the 2 bolts. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Attach the clamp. Connect the 2 ECM connectors and lower the 2 levers. NOTE: When connecting a connector, make sure that dirt, water and other foreign matter is not stuck between the connector and ECM. Make sure that the 2 levers are securely lowered.
2. CONNECT AIR CLEANER INLET Connect the air cleaner inlet with the bolt. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
3. INSTALL AIR CLEANER CASE Install the air cleaner case with the 3 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) Attach the harness clamp.
4. INSTALL AIR CLEANER CAP SUB-ASSEMBLY Install the air cleaner filter element to the air cleaner case. Align the protrusion on the end of the air cleaner hose with the edge of the throttle body and connect the hose. Then, release the lock of the air cleaner hose clamp to secure the clamp. TEXT IN ILLUSTRATION *1 Protrusion *a View A *b RH Side *c Rear HINT: Make sure the claws of the clamp are within the range shown in view A of the illustration. Insert the hinge part of the air cleaner cap into the air cleaner case, and then attach the 2 hook clamps. TEXT IN ILLUSTRATION *1 Hinge Connect the purge line hose to the clamp. Connect the No. 2 ventilation hose to the cylinder head cover. Connect the 2 purge line hoses to the purge VSV. Attach the 2 wire harness clamps. Connect the purge VSV connector. Connect the mass air flow meter connector.
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»(ref-451050-S07721597352012020700000) .
6. PERFORM REGISTRATION When replacing the ECM, input the Vehicle Identification Number (VIN) into the new ECM. Refer to «REGISTRATION»(ref-451061-S18147329012012020700000) .
7. RESET MEMORY (for Automatic Transaxle) When replacing the ECM, perform the Reset Memory procedure (A/T initialization). Refer to «INITIALIZATION»(ref-451062-S12152571452012020700000) .

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1. INSTALL ACCELERATOR PEDAL SENSOR ASSEMBLY Install the accelerator pedal sensor with the 2 bolts. Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) Connect the accelerator pedal sensor connector.

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1. INSTALL MASS AIR FLOW METER SUB-ASSEMBLY Install the mass air flow meter with the 2 screws. NOTE: Make sure that the O-ring is not cracked or jammed when installing the mass air flow meter. Connect the mass air flow meter connector.

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1. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side) Disconnect the sensor connector. Remove the bolt and sensor.
2. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side) Disconnect the sensor connector. Remove the bolt and sensor.

1. INSTALL CAMSHAFT POSITION SENSOR (for Exhaust Side) Apply a light coat of engine oil to the O-ring of the sensor. NOTE: Make sure that the O-ring is not cracked or jammed when installing the sensor. Clean the bolt and bolt hole. Apply adhesive to 2 or 3 threads of the bolt. Adhesive Toyota Genuine Adhesive 1344, Three Bond 1344 or equivalent. Install the sensor with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the sensor connector.
2. INSTALL CAMSHAFT POSITION SENSOR (for Intake Side) Apply a light coat of engine oil to the O-ring of the sensor. NOTE: Make sure that the O-ring is not cracked or jammed when installing the sensor. Clean the bolt and bolt hole. Apply adhesive to 2 or 3 threads of the bolt. Adhesive Toyota Genuine Adhesive 1344, Three Bond 1344 or equivalent. Install the sensor with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the sensor connector.
3. INSPECT FOR OIL LEAK . Refer to «REPLACEMENT - Step 6»(ref-451163-S19675037162012020700000)

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1. REMOVE REAR ENGINE UNDER COVER RH . Refer to «REMOVAL - Step 2»(ref-451161-S10545505172012020700000)
2. REMOVE CRANKSHAFT POSITION SENSOR Disconnect the sensor connector. Remove the bolt and sensor.

1. INSTALL CRANKSHAFT POSITION SENSOR Apply a light coat of engine oil to the O-ring of the sensor. NOTE: Make sure that the O-ring is not cracked or jammed when installing the sensor. Clean the bolt and bolt hole. Apply adhesive to 2 or 3 threads of the bolt. Adhesive Toyota Genuine Adhesive 1344, Three Bond 1344 or equivalent. Install the sensor with the bolt. Torque: 6.5 N*m (66 kgf*cm, 58 in.*lbf) Connect the sensor connector.
2. INSPECT FOR OIL LEAK . Refer to «REPLACEMENT - Step 6»(ref-451163-S19675037162012020700000)
3. INSTALL REAR ENGINE UNDER COVER RH . Refer to «INSTALLATION - Step 2»(ref-451161-S34279517412012020700000)

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1. REMOVE IGNITION COIL ASSEMBLY Disconnect the 4 ignition coil connectors. Remove the 4 bolts and 4 ignition coils.
2. REMOVE SPARK PLUG Using a 16 mm spark plug wrench, remove the 4 spark plugs. TEXT IN ILLUSTRATION *1 16 mm Spark Plug Wrench

1. INSTALL SPARK PLUG Using a 16 mm spark plug wrench, install the 4 spark plugs. Torque: 25 N*m (255 kgf*cm, 18 ft.*lbf)
2. INSTALL IGNITION COIL ASSEMBLY Install the 4 ignition coils with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the 4 ignition coil connectors.

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1. REMOVE ENGINE UNDER COVER Refer to step 1
2. DRAIN ENGINE COOLANT . Refer to «REPLACEMENT - Step 3»(ref-451165-S40553739182012020700000)
3. REMOVE ENGINE COOLANT TEMPERATURE SENSOR Disconnect the sensor connector. Using SST, remove the sensor and gasket. SST: 09817-33190

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1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR TEXT IN ILLUSTRATION *1 Resistance *2 Temperature *3 Acceptable Range - - *a Component without harness connected (Engine Coolant Temperature Sensor) - - Partially immerse the sensor in water and warm up the water. 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) 2.32 to 2.59 kohms 80°C (176°F) 0.310 to 0.326 kohms NOTE: When checking the sensor in water, keep the terminals dry. After the check, wipe the sensor dry. If the result is not as specified, replace the engine coolant temperature sensor.

1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR Install a new gasket to the sensor. Using SST, install the sensor. SST: 09817-33190 Torque: 20 N*m (200 kgf*cm, 14 ft.*lbf) Connect the sensor connector.
2. ADD ENGINE COOLANT . Refer to «REPLACEMENT - Step 4»(ref-451165-S40553739182012020700000)
3. INSPECT FOR COOLANT LEAK . Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-451164-S29335948602012020700000)
4. INSTALL ENGINE UNDER COVER Refer to step 5

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1. REMOVE INTAKE MANIFOLD Refer to «REMOVAL»(ref-451183-S13826490012012020700000)
2. REMOVE KNOCK SENSOR Disconnect the sensor connector. Remove the bolt and sensor.