Engine Control System (service Information) (phv) Toyota Prius PHV pre-III

Scheme 637

ON-VEHICLE INSPECTION

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Connect the Techstream to the DLC3. Turn the Techstream on. Set the vehicle to the inspection mode. Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-phv) . Start the engine. Inspect the oil control valve. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1). Check the engine speed when the oil control valve is operated using the Techstream with the engine coolant temperature at 50°C (122°F) or less. HINT: When performing the Active Test, the air conditioning should be on. Engine coolant temperature when the engine is started should be 30°C (86°F) or less. Standard Control Range Specified Condition OFF Normal engine speed ON Rough idle or engine stalls (soon after oil control valve switched from OFF to ON)

Scheme 638

Scheme 639

1. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 30»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
2. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Disconnect the camshaft timing oil control valve assembly connector. Remove the bolt and remove the camshaft timing oil control valve assembly. Remove the O-ring from the camshaft timing oil control valve assembly.

Scheme 640

Scheme 641

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 oil control valve assembly. Check the operation. Connect a positive (+) battery lead to terminal 1 and a negative (-) lead to terminal 2, and check the movement of the valve. TEXT IN ILLUSTRATION *1 When Applied *2 When Cut Off NOTE: Confirm that the valve moves freely and does not stick in any position. If necessary, replace the camshaft timing oil control valve assembly. HINT: Accumulation of foreign matter can cause minor pressure leaks. Minor pressure leaks will cause the camshaft to advance or retard, and this will cause a DTC to be set.

INSTALLATION

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Apply a light coat of engine oil to a new O-ring and install it onto the camshaft timing oil control valve assembly. NOTE: Do not twist the O-ring. Install the camshaft timing oil control valve assembly and wire harness bracket with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the camshaft timing oil control valve assembly connector.
2. INSPECT FOR OIL LEAK
3. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 97»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)

Scheme 642

Scheme 643

Scheme 644

1. INSPECT THROTTLE BODY ASSEMBLY Check for throttle control motor operating sound. Turn the power switch on (IG). When depressing the accelerator pedal, check the operating sound of the motor. Make sure that no friction noises are emitted from the motor. If any friction noise exists, replace the throttle body assembly. Set the vehicle to the inspection mode. Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-phv) . 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 950 to 1050 rpm NOTE: Be sure to perform this step with all accessories off. Make sure that park (P) is selected.

Scheme 645

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Scheme 647

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Scheme 650

Scheme 651

1. REMOVE NO. 1 ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT (for Engine) . Refer to «REPLACEMENT - Step 2»(/toyota/prius-phv/pre-iii-2010-2011/remont/cooling-fan/#engine-cooling-system-service-information-phv)
3. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 30»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
4. REMOVE AIR CLEANER CAP SUB-ASSEMBLY Disconnect the mass air flow meter connector. Release the 2 clamps. Loosen the hose clamp and remove the air cleaner cap.
5. REMOVE INLET AIR CLEANER ASSEMBLY Separate the hose from the hose clamp. Separate the wire harness clamp from the inlet air cleaner assembly. Remove the 3 bolts and inlet air cleaner assembly.
6. REMOVE AIR CLEANER CASE Remove the air cleaner filter element. Separate the hose from the 3 hose clamps. Remove the 3 bolts and air cleaner case.
7. REMOVE AIR CLEANER HOSE ASSEMBLY Loosen the hose clamp and separate the ventilation hose. Unlock the hose clamp and remove the air cleaner hose assembly.
8. REMOVE THROTTLE BODY ASSEMBLY Disconnect the throttle body connector and the 2 water by-pass hoses. Remove the 2 bolts, 2 nuts and throttle body assembly. Remove the gasket from the intake manifold.

Scheme 652

1. INSPECT THROTTLE BODY ASSEMBLY Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Component without harness connected (Throttle Body) 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 assembly.

1. INSTALL THROTTLE BODY ASSEMBLY Install a new gasket onto the intake manifold. Install the throttle body assembly with the 2 bolts and 2 nuts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the 2 water by-pass hoses and throttle body connector.
2. INSTALL AIR CLEANER HOSE ASSEMBLY Install the air cleaner hose assembly and lock the hose clamp. Connect the ventilation hose.
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) Install the hose to the 3 hose clamps. Install the air cleaner filter element.
4. INSTALL INLET AIR CLEANER ASSEMBLY Install the inlet air cleaner assembly with the 3 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) Connect the wire harness clamp to the inlet air cleaner assembly. Install the hose to the hose clamp.
5. INSTALL AIR CLEANER CAP SUB-ASSEMBLY Install the air cleaner cap sub-assembly with the 2 clamps. Tighten the hose clamp. Connect the mass air flow meter connector.
6. ADD ENGINE COOLANT (for Engine) . Refer to «REPLACEMENT - Step 3»(/toyota/prius-phv/pre-iii-2010-2011/remont/cooling-fan/#engine-cooling-system-service-information-phv)
7. INSPECT FOR COOLANT LEAK (for Engine) . Refer to «ON-VEHICLE INSPECTION - Step 1»(/toyota/prius-phv/pre-iii-2010-2011/remont/cooling-system-mechanical/#engine-cooling-system-inspection-phv)
8. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 97»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
9. INSTALL NO. 1 ENGINE UNDER COVER
10. PERFORM INITIALIZATION NOTE: Be sure to perform this procedure after reassembling the throttle body assembly, removing and reinstalling any throttle body component or replacing the ECM. Disconnect the cable from the negative (-) battery terminal. Wait at least 60 seconds and reconnect the cable. Connect the Techstream to the DLC3 and clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/testing-diagnostics/#engine-control-sfi-system-diagnostics-introduction-phv__dtc-checkclear) . Set the vehicle to the inspection mode. Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-phv) . Start the engine without operating the accelerator pedal and check that the MIL is not illuminated and that the idle speed is within the specified range when the air conditioning is switched off after the engine is warmed up. Standard Condition Engine Idle Speed A/C switched off 950 to 1050 rpm NOTE: If the accelerator pedal is operated, perform the above steps again. Be sure to perform this step with all accessories off. Make sure that park (P) is selected. Perform a road test and confirm that there are no abnormalities.

Scheme 653

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Scheme 661

Scheme 662

1. REMOVE REAR NO. 3 FLOOR BOARD (for Separate Type) . Refer to «REMOVAL - Step 1»(/toyota/prius-phv/pre-iii-2010-2011/remont/exteriorinterior-trim/#interior-panels-trim-service-information-phv)
2. REMOVE REAR FLOOR BOARD SPACER . Refer to «REMOVAL - Step 2»(/toyota/prius-phv/pre-iii-2010-2011/remont/exteriorinterior-trim/#interior-panels-trim-service-information-phv)
3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
4. SEPARATE RADIATOR RESERVOIR TANK ASSEMBLY Remove the 2 bolts and separate the radiator reservoir tank assembly.
5. REMOVE ECM Remove the No. 1 relay block cover. Disconnect the 3 wire harness connectors. Disengage the 2 claws, push up the engine room wire harness and separate it from the engine room relay block. Disengage the 2 claws and push up the side cover to remove it. Loosen the bolt and separate the No. 2 engine room wire. Disconnect the 2 ECM connectors. Disconnect the 2 wire harness clamps. Push the locks on the 2 levers, then raise the levers, and disconnect the 2 ECM connectors. NOTE: After disconnecting the connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the connectors. Separate the 3 wire harness clamps. Remove the 2 bolts and ECM with 2 ECM brackets.

Scheme 663

Scheme 664

Scheme 665

1. INSTALL ECM Install the ECM with the 2 bolts. Torque: 13 N*m (133 kgf*cm, 10 ft.*lbf) Install the 3 wire harness clamps. Connect the 2 ECM connectors. Connect the 2 ECM connectors and lower the 2 levers. NOTE: When connecting the connectors, make sure that dirt, water or other foreign matter does not get caught between the connectors and other parts. Make sure that the 2 levers are securely locked. Install the 2 wire harness clamps. Install the No. 2 engine room wire with the bolt. Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) Slide the side cover down and engage the 2 claws to install it. Slide the engine room wire harness down and engage the 2 claws to install it. Connect the 3 wire harness connectors. Install the No. 1 relay block cover.
2. INSTALL RADIATOR RESERVOIR TANK ASSEMBLY Install the radiator reservoir tank assembly with the 2 bolts. Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
4. INSTALL REAR FLOOR BOARD SPACER . Refer to «INSTALLATION - Step 48»(/toyota/prius-phv/pre-iii-2010-2011/remont/exteriorinterior-trim/#interior-panels-trim-service-information-phv)
5. INSTALL REAR NO. 3 FLOOR BOARD . Refer to «INSTALLATION - Step 49»(/toyota/prius-phv/pre-iii-2010-2011/remont/exteriorinterior-trim/#interior-panels-trim-service-information-phv)

Scheme 666

Note. Perform the mass air flow meter inspection in accordance with the following procedure. Replace the mass air flow meter only when foreign matter adheres to the sensor and the MAF value in the Data List (with the engine stopped) is not within the normal operating range.

1. INSPECT MASS AIR FLOW METER Read the values 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 while it is installed into the air cleaner case (installed on the vehicle). During the test, do not use an exhaust air duct on the exhaust pipe. Connect the Techstream to the DLC3. Turn the power switch on (IG) (do not run the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Wait 30 seconds, and read the values on the Techstream. Standard Condition Tester Display Condition Standard Condition MAF Engine not running 30 seconds after power switch is turned on (IG) Less than 0.25 g/sec If the result is not as specified, replace the mass air flow meter. If the result is within the specified range, remove and inspect the mass air flow meter. Refer to «INSPECTION»(/toyota/prius-phv/pre-iii-2010-2011/remont/engine-control-systems/#engine-control-system-service-information-phv) .

Scheme 667

1. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 30»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
2. REMOVE MASS AIR FLOW METER Disconnect the mass air flow meter connector. Remove the 2 screws and the mass air flow meter.

Scheme 668

Scheme 669

1. INSPECT MASS AIR FLOW METER Perform a visual check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter shown in the illustration. TEXT IN ILLUSTRATION *1 Platinum Hot Wire (Heater) Result There is no foreign matter. If the result is not as specified, replace the mass air flow meter. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter 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

1. INSTALL MASS AIR FLOW METER Install the mass air flow meter with the 2 screws. NOTE: Make sure that the O-ring is not cracked or does not jump out of position during installation. Connect the mass air flow meter connector.
2. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 97»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)

Scheme 670

REMOVAL

HINT

Although the part name refers to the No. 1 crank position sensors, this procedure is for the camshaft position sensors.

Scheme 671

1. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 30»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
2. REMOVE NO. 1 CRANK POSITION SENSOR Disconnect the No. 1 crank position sensor connector. Remove the bolt and No. 1 crank position sensor.

HINT

Although the part name refers to the No. 1 crank position sensors, this procedure is for the camshaft position sensors.

Scheme 672

1. INSTALL NO. 1 CRANK POSITION SENSOR Apply a light coat of engine oil to the O-rings on the No. 1 crank position sensors. Install the No. 1 crank position sensor with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the No. 1 crank position sensor connector.
2. INSPECT FOR OIL LEAK
3. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 97»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)

Scheme 673

Scheme 674

Scheme 675

Scheme 676

1. REMOVE REAR ENGINE UNDER COVER RH
2. REMOVE NO. 1 ENGINE UNDER COVER
3. REMOVE CRANK POSITION SENSOR Disconnect the crank position sensor connector. Remove the bolt and crank position sensor.

Scheme 677

1. INSPECT CRANK POSITION SENSOR Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Ohmmeter Standard Resistance Tester Connection Condition Specified Condition 1 - 2 -10 to 50°C (14 to 122°F) 1850 to 2450 ohms

Scheme 678

1. INSTALL CRANK POSITION SENSOR Apply a light coat of engine oil to the O-ring on the crank position sensor. Install the crank position sensor with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the crank position sensor connector.
2. INSPECT FOR OIL LEAK
3. INSTALL NO. 1 ENGINE UNDER COVER
4. INSTALL REAR ENGINE UNDER COVER RH

Scheme 679

Scheme 680

Scheme 681

Scheme 682

1. REMOVE WINDSHIELD WIPER MOTOR AND LINK Remove the windshield wiper motor and link. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/wiperwasher-systems/#wiper-system-washer-system-service-information-phv) .
2. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 8»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical-hydraulic/#brake-system-service-information-phv)
3. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 30»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
4. REMOVE IGNITION COIL ASSEMBLY Disconnect the 4 ignition coil connectors. Remove the 4 bolts and 4 ignition coils. NOTE: When removing each ignition coil, do not damage the plug cap on the engine head cover opening or the upper edge of the spark plug tube.
5. REMOVE SPARK PLUG Using a 14 mm spark plug wrench, remove the 4 spark plugs.

1. INSTALL SPARK PLUG Using a 14 mm spark plug wrench, install the 4 spark plugs. Torque: 20 N*m (204 kgf*cm, 15 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) NOTE: When installing each ignition coil, do not damage the plug cap on the engine head cover opening or the upper edge of the spark plug tube. Connect the 4 ignition coil connectors.
3. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 97»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
4. INSTALL OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «INSTALLATION - Step 15»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical-hydraulic/#brake-system-service-information-phv)
5. INSTALL WINDSHIELD WIPER MOTOR AND LINK Remove the windshield wiper motor and link. Refer to «INSTALLATION»(/toyota/prius-phv/pre-iii-2010-2011/remont/wiperwasher-systems/#wiper-system-washer-system-service-information-phv) .

Scheme 683

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Scheme 686

1. REMOVE EGR WITH COOLER PIPE SUB-ASSEMBLY Remove the EGR with cooler pipe sub-assembly. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/auxiliary-emission-control-systems/#emission-control-system-service-information-phv) .
2. REMOVE RADIATOR RESERVOIR TANK ASSEMBLY See step 4
3. REMOVE E.F.I. ENGINE COOLANT TEMPERATURE SENSOR Disconnect the engine coolant temperature sensor connector. Remove the engine coolant temperature sensor.

Scheme 687

1. INSPECT E.F.I. ENGINE COOLANT TEMPERATURE SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Condition Specified Condition Approximately 20°C (68°F) 2.32 to 2.59 kohms Approximately 80°C (176°F) 0.310 to 0.326 kohms NOTE: When checking the engine coolant temperature sensor in water, keep the terminals dry. After the check, dry the sensor. If the resistance is not as specified, replace the engine coolant temperature sensor.

1. INSTALL E.F.I. ENGINE COOLANT TEMPERATURE SENSOR Install the engine coolant temperature sensor through a new gasket. Torque: 20 N*m (200 kgf*cm, 14 ft.*lbf) Connect the engine coolant temperature sensor connector.
2. INSTALL RADIATOR RESERVOIR TANK ASSEMBLY See step 2
3. INSTALL EGR WITH COOLER PIPE SUB-ASSEMBLY Install the EGR with cooler pipe sub-assembly. Refer to «INSTALLATION»(/toyota/prius-phv/pre-iii-2010-2011/remont/auxiliary-emission-control-systems/#emission-control-system-service-information-phv) .

Scheme 688

Scheme 689

1. REMOVE INTAKE MANIFOLD Remove the intake manifold. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#intake-manifold-service-information-phv) .
2. REMOVE KNOCK SENSOR Disconnect the knock sensor connector. Remove the bolt and remove the knock sensor.

Scheme 690

1. INSPECT KNOCK SENSOR TEXT IN ILLUSTRATION *1 Ohmmeter 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) 120 to 280 kohms If the result is not as specified, replace the knock sensor.

Scheme 691

1. INSTALL KNOCK SENSOR Install the knock sensor with the bolt as shown in the illustration. Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) NOTE: Make sure that the knock control sensor is in the correct position. Connect the knock sensor connector.
2. INSTALL INTAKE MANIFOLD Install the intake manifold. Refer to «INSTALLATION»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#intake-manifold-service-information-phv__installation) .

Scheme 692

Scheme 693

Scheme 694

1. REMOVE WINDSHIELD WIPER MOTOR AND LINK Remove the windshield wiper motor and link. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/wiperwasher-systems/#wiper-system-washer-system-service-information-phv) .
2. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 8»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical-hydraulic/#brake-system-service-information-phv)
3. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 30»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
4. REMOVE AIR FUEL RATIO SENSOR Disconnect the air fuel ratio sensor connector and clamp. Using SST, remove the air fuel ratio sensor. SST: 09224-00010

Scheme 695

1. INSPECT AIR FUEL RATIO SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) - 10 kohms or higher TEXT IN ILLUSTRATION *1 Ohmmeter If the result is not as specified, replace the air fuel ratio sensor.

Scheme 696

1. INSTALL AIR FUEL RATIO SENSOR Using SST, install the air fuel ratio sensor. SST: 09224-00010 without SST Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) with SST Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) NOTE: 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 300 mm (11.81 in.). Refer to «PRECAUTION»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-phv) . This torque value is effective when SST is parallel to the torque wrench. Connect the air fuel ratio sensor connector and clamp.
2. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 97»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical/#engine-mechanical-service-information-phv)
3. INSPECT FOR EXHAUST GAS LEAK
4. INSTALL OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «INSTALLATION - Step 15»(/toyota/prius-phv/pre-iii-2010-2011/remont/mechanical-hydraulic/#brake-system-service-information-phv)
5. INSTALL WINDSHIELD WIPER MOTOR AND LINK Install the windshield wiper motor and link. Refer to «INSTALLATION»(/toyota/prius-phv/pre-iii-2010-2011/remont/wiperwasher-systems/#wiper-system-washer-system-service-information-phv) .

Scheme 697

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Scheme 700

Scheme 701

1. REMOVE FRONT NO. 3 ENGINE UNDER COVER Remove the 4 clips and No. 2 engine under cover.
2. REMOVE HEATED OXYGEN SENSOR Disconnect the heated oxygen sensor connector. Remove the grommet and pull the sensor connector out of the cabin through the floor panel. Remove the wire harness clamp bracket and disconnect the wire harness clamp. Using SST, remove the heated oxygen sensor. SST: 09224-00010

Scheme 702

1. INSPECT HEATED OXYGEN SENSOR TEXT IN ILLUSTRATION *1 Component without harness connected (Heated Oxygen Sensor) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition (HT) - (+B) 20°C (68°F) 11 to 16 ohms (HT) - (E) - 10 kohms or higher If the result is not as specified, replace the heated oxygen sensor.

Scheme 703

1. INSTALL HEATED OXYGEN SENSOR Using SST, install the heated oxygen sensor onto the front exhaust pipe. TEXT IN ILLUSTRATION *1 Fulcrum Length *2 30 mm SST: 09224-00010 without SST Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) with SST Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) NOTE: This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.81 in.) and SST with a length of 30 mm (1.18 in.). Refer to «PRECAUTION»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-phv) . This torque value is effective when SST is parallel to the torque wrench. Install the wire harness clamp bracket and connect the wire harness clamp. Install the wire harness clamp bracket with the bolt. Torque: 12 N*m (127 kgf*cm, 9 ft.*lbf) Install the wire harness bracket. Connect the heated oxygen sensor connector.
2. INSPECT FOR EXHAUST GAS LEAK
3. INSTALL FRONT NO. 3 ENGINE UNDER COVER Install the No. 2 engine under cover with the 4 clips.

Scheme 704

Scheme 705

Scheme 706

1. REMOVE NO. 1 RELAY BLOCK COVER
2. REMOVE NO. 2 INTEGRATION RELAY Using a screwdriver with its tip wrapped in protective tape, disengage the 2 claws and disconnect the NO. 2 integration relay. Disconnect the 3 connectors and remove the NO. 2 integration relay.

Scheme 707

Scheme 708

1. INSPECT NO. 2 INTEGRATION RELAY TEXT IN ILLUSTRATION *1 Integration Relay IG2 RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Integration Relay Standard Resistance Tester Connection Condition Specified Condition Integration relay (1C-1) - Integration relay (1A-4) Battery voltage is not applied between terminals 1A-2 and 1A-3 10 kohms or higher Integration relay (1C-1) - Integration relay (1A-4) Battery voltage is applied between terminals 1A-2 and 1A-3 Below 1 ohms If the resistance is not as specified, replace the NO. 2 integration relay. EFI MAIN RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Integration Relay Standard Resistance Tester Connection Condition Specified Condition Integration relay (1C-1) - Integration relay (1B-4) Battery voltage is not applied between terminals 1B-2 and 1B-3 10 kohms or higher Integration relay (1C-1) - Integration relay (1B-4) Battery voltage is applied between terminals 1B-2 and 1B-3 Below 1 ohms If the resistance is not as specified, replace the NO. 2 integration relay. C/OPN RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Integration Relay Standard Resistance Tester Connection Condition Specified Condition Integration relay (1B-5) - Integration relay (1B-8) Battery voltage is not applied between terminals 1B-6 and 1B-7 10 kohms or higher Integration relay (1B-5) - Integration relay (1B-8) Battery voltage is applied between terminals 1B-6 and 1B-7 Below 1 ohms If the resistance is not as specified, replace the NO. 2 integration relay. BATT FAN RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Integration Relay Standard Resistance Tester Connection Condition Specified Condition Integration relay (1C-1) - Integration relay (1A-8) Battery voltage is not applied between terminals 1A-6 and 1A-7 10 kohms or higher Integration relay (1C-1) - Integration relay (1A-8) Battery voltage is applied between terminals 1A-6 and 1A-7 Below 1 ohms If the resistance is not as specified, replace the NO. 2 integration relay.

Scheme 709

1. INSTALL NO. 2 INTEGRATION RELAY Connect the 3 connectors. Attach the integration relay to the engine room relay block.
2. REMOVE NO. 1 RELAY BLOCK COVER

See also:
• INSPECTION MODE PROCEDURE
• REMOVAL - Step 30
• REPLACEMENT - Step 2
• ON-VEHICLE INSPECTION - Step 1
• DTC CHECK / CLEAR
• REMOVAL - Step 1
• REMOVAL
• REMOVAL - Step 8
• REMOVAL
• REMOVAL
• INSTALLATION
• INSPECTION