Sfi System (Service Information): Removal & Installation Toyota Sequoia I рестайлинг

INSTALLATION

Installation is in the reverse order of removal. (See REMOVAL )

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1. Start the engine.
2. While the engine idling, check that the actuator rod moves.
3. Disconnect the VSV connector, and check that the actuator rod is returned. If the operation is not as specified, inspect the intake air control valve, VSV and ECM.

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1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE MANIFOLD ASSEMBLY (See «REMOVAL»(ref-227588-S25800526872006040600000) )
3. REMOVE VSV FOR ACIS Remove the 2 vacuum hoses from the VSV. Remove the bolt and VSV from the intake manifold.

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1. INSPECT INTAKE AIR CONTROL VALVE With 39.9 kPa (300 mmHg, 11.8 in.Hg) of vacuum applied to the actuator, check that the actuator rod moves. One minute after applying the vacuum in step (a), check that the actuator rod does not return. If the operation is not as specified, replace the intake manifold.
2. INSPECT VSV Using an ohmmeter, check that there is continuity between each terminal. Resistance: 33 to 39 ohm at 20° C (68° F) If there is no continuity, replace the VSV. Using an ohmmeter, check that there is no continuity between each terminal and the body. If there is continuity, replace the VSV. Check that air flows from port E to the filter. Apply battery voltage across the terminals. Check that air flows from port E to port F. If operation is not as specified, replace the VSV.

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1. INSTALL VSV FOR ACIS Install the VSV to the intake manifold with the bolt. Torque: 7.5 N.m (76 kgf.cm, 66 in..lbf) Connect the 2 vacuum hoses to the VSV.
2. INSTALL INTAKE MANIFOLD ASSEMBLY (See «INSTALLATION»(ref-227588-S19260811062006040600000) )
3. INSTALL THROTTLE BODY COVER

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1. REMOVE RELAY BOX COVER
2. REMOVE EFI MAIN RELAY (Marking: EFI)
3. INSPECT EFI MAIN RELAY CONTINUITY Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay. Check that there is no continuity between terminals 3 and 5. If there is continuity, replace the relay.
4. INSPECT EFI MAIN RELAY OPERATION Apply battery voltage across terminals 1 and 2. Using an ohmmeter, check that there is continuity between terminals 3 and 5. If there is no continuity, replace the relay.
5. REINSTALL EFI MAIN RELAY
6. REINSTALL RELAY BOX COVER

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1. REMOVE RELAY BOX COVER
2. REMOVE A/F SENSOR HEATER RELAY (Marking: A/F HTR)
3. INSPECT A/F SENSOR HEATER RELAY CONTINUITY Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay. Check that there is no continuity between terminals 3 and 5. If there is continuity, replace the relay.
4. INSPECT A/F SENSOR HEATER RELAY OPERATION Apply battery voltage across terminals 1 and 2. Using an ohmmeter, check that there is continuity between terminals 3 and 5. If there is no continuity, replace the relay.
5. REINSTALL A/F SENSOR HEATER RELAY
6. REINSTALL RELAY BOX COVER

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1. REMOVE RELAY BOX COVER
2. REMOVE CIRCUIT OPENING RELAY (Marking: C/O)
3. INSPECT CIRCUIT OPENING RELAY CONTINUITY Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay. Check that there is no continuity between terminals 3 and 5. If there is continuity, replace the relay.
4. INSPECT CIRCUIT OPENING RELAY OPERATION Apply battery positive voltage across terminals 1 and 2. Using an ohmmeter, check that there is continuity between terminals 3 and 5. If there is no continuity, replace the relay.
5. REINSTALL CIRCUIT OPENING RELAY
6. REINSTALL RELAY BOX COVER

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1. REMOVE RELAY BOX COVER
2. REMOVE FUEL PUMP RELAY (Marking: F/P)
3. INSPECT FUEL PUMP RELAY CONTINUITY Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay. Check that there is continuity between terminals 3 and 4. If there is no continuity, replace the relay.
4. INSPECT FUEL PUMP RELAY OPERATION Apply battery positive voltage across terminals 1 and 2. Using an ohmmeter, check that there is no continuity between terminals 3 and 4. If there is continuity, replace the relay.
5. REINSTALL FUEL PUMP RELAY
6. REINSTALL RELAY BOX COVER

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1. REMOVE FUEL PUMP RESISTOR
2. INSPECT FUEL PUMP RESISTOR Using an ohmmeter, measure the resistance between the terminals. Resistance: 0.70 to 0.76 ohm at 20° C (68° F) If the resistance is not as specified, replace the resistor.
3. REINSTALL FUEL PUMP RESISTOR Torque: 8.0 N.m (82 kgf.cm, 71 in..lbf)

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1. REMOVE VSV
2. INSPECT VSV Inspect the VSV for open circuit. Using an ohmmeter, check that there is continuity between the terminals. Resistance: 30 to 34 ohm at 20° C (68° F) If there is no continuity, replace the VSV. Inspect the VSV for ground. Using an ohmmeter, check that there is no continuity between each terminal and the body. If there is continuity, replace the VSV. Inspect the VSV operation. Check that air dose not flow from port. Apply battery positive voltage across the terminals. Check that air flows from port. If operation is not as specified, replace the VSV.
3. REINSTALL VSV

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1. DRAIN ENGINE COOLANT
2. REMOVE THROTTLE BODY COVER
3. REMOVE INTAKE AIR CONNECTOR
4. DISCONNECT THROTTLE BODY FROM INTAKE MANIFOLDS Remove the nut and 3 bolts, and disconnect the throttle body from the intake manifold.
5. REMOVE ECT SENSOR Disconnect the ECT sensor connector. Remove the ECT sensor and gasket.
6. INSPECT ECT SENSOR Using an ohmmeter, measure the resistance between the terminals. Resistance: Refer to the graph If the resistance is not as specified, replace the ECT sensor.
7. REINSTALL ECT SENSOR Install a new gasket and the ECT sensor. Torque: 19.6 N.m (200 kgf.cm, 14 ft.lbf) Connect the ECT sensor connector.
8. REINSTALL THROTTLE BODY TO INTAKE MANIFOLDS Install a new gasket and the throttle body with the 2 bolts and 2 nuts. Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
9. REINSTALL INTAKE AIR CONNECTOR
10. REFILL WITH ENGINE COOLANT (See «REPLACEMENT»(ref-227591-S31440048072006040600000) )
11. REINSTALL THROTTLE BODY COVER

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1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE AIR CONNECTOR
3. REMOVE INTAKE MANIFOLDS ASSEMBLY (See «REMOVAL»(ref-227588-S25800526872006040600000) )
4. INSPECT KNOCK SENSORS 1 AND 2 Disconnect the knock sensor connectors. Using an ohmmeter, measure the resistance between terminals. Resistance: 120 to 280 k ohm at 20° C (68° F) HINT: If the resistance is not as specified, replace the sensor.
5. REMOVE KNOCK SENSOR Disconnect the 2 knock sensor connectors. Remove the 2 nuts and 2 knock sensors.
6. INSTALL KNOCK SENSOR Install the 2 knock sensors with the 2 nuts as shown in the illustration. Torque: 20 N.m (204 kgf.cm, 15 ft.lbf) Connect the 2 knock sensor connectors.
7. INSTALL INTAKE MANIFOLD ASSEMBLY (See «INSTALLATION»(ref-227588-S19260811062006040600000) )
8. INSTALL INTAKE AIR CONNECTOR
9. INSTALL THROTTLE BODY COVER

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1. INSPECT HEATER RESISTANCE OF AIR FUEL RATIO SENSOR Disconnect the air fuel ratio sensor connector. Using an ohmmeter, measure the resistance between terminals +B and HT. Resistance 11 to 16 k ohm at 20° C (68° F) If the resistance is not as specified, replace the sensor. Torque: 44 N.m (450 kgf.cm, 32 ft.lbf) Reconnect the air fuel ratio sensor connector.
2. INSPECT OPERATION OF AIR FUEL RATIO SENSOR (See «DTC P0031, P0032, P0051, P0052: OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW/HIGH (BANK 1 & 2 SENSOR 1)»(ref-227566-S02360989702006040600000) )
3. INSPECT AIR-FUEL RATIO COMPENSATION SYSTEM Measure the voltage between the terminals of the ECM connectors. Standard: VOLTAGE CHECK SPECIFIED CONDITION Tester Connection Condition Specified Condition B2-22 (A1A+) - B1-1 (E1) Ignition switch ON 3.3 V B2-30 (A1A-) - B1-1 (E1) Ignition switch ON 2.9 V B2-23 (A2A+) - B1-1 (E1) Ignition switch ON 3.3 V B2-31 (A2A-) - B1-1 (E1) Ignition switch ON 2.9 V NOTE: Connect test leads from the back side of the connector. The connectors should not be disconnected from the ECM. HINT: The voltage between the terminals of the ECM is kept constant regardless of the voltage of the A/F sensor. Connect a hand-held tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Date Link Connector 3 (DLC3). Turn the ignition switch ON. Select the following menu items: Data List / A/FS B1 S1 and O2S B1 S2. Warm up the A/F sensor by running the engine at 2,500 RPM for approximately 2 minutes. Keep the engine speed at 2,500 RPM and confirm that the display of the "A/FS B1 S1" is as shown in the illustration. HINT: The illustration may slightly differ from the display on the hand-held tester. The waveform of the A/F sensor is displayed only on the hand-held tester. Confirm that the display of the "O2S B1 S2" changes between 0 and 1 V with the engine speed at 2,500 RPM. OK: The voltage output oscillates more than 8 times in 10 seconds. CAUTION: Perform the check immediately after warming up the engine. If the voltage variation could not be verified, warm up the heated oxygen sensor again. If it could not be verified even after warming up the sensor again, check the DTC No. (See «DTC P0031, P0032, P0051, P0052: OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW/HIGH (BANK 1 & 2 SENSOR 1)»(ref-227566-S02360989702006040600000) )

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1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR Disconnect the oxygen sensor connector. Using an ohmmeter, measure the resistance between terminals +B and HT. Resistance: 11 to 16 ohm at 20° C (68° F) If the resistance is not as specified, replace the sensor. Torque: 44 N.m (450 kgf.cm, 32 ft.lbf) Reconnect the oxygen sensor connector.
2. INSPECT OPERATION OF HEATED OXYGEN SENSOR (See «DTC P0037, P0038, P0057, P0058: OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW/HIGH (BANK 1 & 2 SENSOR 2)»(ref-227566-S31797322722006040600000) )

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REPLACEMENT

1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE MANIFOLD ASSEMBLY (See «REMOVAL»(ref-227588-S25800526872006040600000) )
3. REMOVE VVT SENSOR Disconnect the VVT sensor connector. Remove the bolt and VVT sensor.
4. INSTALL VVT SENSOR Attach a new VVT sensor to the cylinder head. Install the VVT sensor with the bolt. Torque: 6.5 N.m (65 kgf.cm, 58 in..lbf)
5. REINSTALL INTAKE MANIFOLD ASSEMBLY (See «INSTALLATION»(ref-227588-S19260811062006040600000) )
6. REINSTALL THROTTLE BODY COVER

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