Engine Control System (2TR-FE) (Service Information): Removal & Installation Toyota 4Runner V

INSTALLATION

1. INSTALL NO. 2 ECM BRACKET Install the No. 2 ECM bracket with the 2 screws. Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf)
2. INSTALL ECM BRACKET Install the bracket with the 2 screws. Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf)
3. INSTALL ECM Install the ECM with the bolt and nut. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Connect the 6 connectors.
4. INSTALL LOWER INSTRUMENT PANEL SUB-ASSEMBLY Install the lower instrument panel, refer to «INSTALLATION»(ref-422137-S07956583592011092600000) .
5. PERFORM INITIALIZATION See step 8

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1. INSTALL ACCELERATOR PEDAL POSITION SENSOR ASSEMBLY NOTE: Avoid physical shocks to the accelerator pedal position sensor assembly. Do not disassemble the accelerator pedal position sensor assembly. Install the accelerator pedal position sensor with the 2 nuts. Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) Connect the accelerator pedal position sensor connector.

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1. CHECK MASS AIR FLOW METER Check the mass air flow value. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / MAF. Blow air into the mass air flow meter and check that the mass air flow meter value fluctuates. TEXT IN ILLUSTRATION Air If the result is not as specified, replace the mass air flow meter. If the result is within the specified range, inspect the mass air flow meter, refer to «INSPECTION»(ref-421955-S27439681772011092600000) .

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1. REMOVE MASS AIR FLOW METER Disconnect the mass air flow meter connector. Remove the 2 screws and mass air flow meter.

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1. INSPECT MASS AIR FLOW METER Check the output voltage. Apply battery voltage across terminals 1 (+B) and 2 (E2G). NOTE: While using the battery during inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur. Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG) and the negative (-) tester probe to terminal 2 (E2G). Blow air into the mass air flow meter and check that the voltage fluctuates. TEXT IN ILLUSTRATION Air If the result is not as specified, replace the 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. OK There is no foreign matter. TEXT IN ILLUSTRATION *1 Platinum Hot Wire (Heater) If the result is not as specified, replace the mass air flow meter. Check the intake air temperature sensor. TEXT IN ILLUSTRATION *1 Resistance *2 Temperature *3 Acceptable - - *a Component without harness connected (Mass Air Flow Meter) - - Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (THA) - 5 (E2) -20°C (-4°F) 12.5 to 16.9 kohms 20°C (68°F) 2.19 to 2.67 kohms 60°C (140°F) 0.50 to 0.68 kohms If the result is not as specified, replace the mass air flow meter.

1. INSTALL MASS AIR FLOW METER Install the mass air flow meter with the 2 screws. Torque: 1.0 N*m (10 kgf*cm, 9 in.*lbf) Connect the mass air flow meter connector.

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1. REMOVE CAMSHAFT POSITION SENSOR Disconnect the camshaft position sensor connector. Remove the bolt and camshaft position sensor.

1. INSTALL SPARK PLUG Using a 16 mm spark plug wrench, install the 4 spark plugs. Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
2. INSTALL IGNITION COIL ASSEMBLY Install the 4 ignition coils with the 4 bolts. Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf) Connect the 4 ignition coil connectors.
3. INSTALL INTAKE AIR CONNECTOR See step 2
4. INSTALL AIR CLEANER AND HOSE See step 3

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1. REMOVE INTAKE MANIFOLD Remove the intake manifold, refer to «REMOVAL»(ref-422105-S00548306822011092600000) .
2. REMOVE ENGINE COOLANT TEMPERATURE SENSOR Disconnect the engine coolant temperature sensor connector. Using a 19 mm deep socket wrench, remove the engine coolant temperature sensor and gasket.

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1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (E2) - 2 (THW) 20°C (68°F) 2.32 to 2.59 kohms 80°C (176°F) 0.310 to 0.326 kohms TEXT IN ILLUSTRATION *1 Resistance *2 Temperature *3 Acceptable - - *a Component without harness connected (Engine Coolant Temperature Sensor) - - NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, clean off any water on the engine coolant temperature sensor. 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 engine coolant temperature sensor. Using a 19 mm deep socket wrench, install the engine coolant temperature sensor. Torque: 20 N*m (200 kgf*cm, 14 ft.*lbf) Connect the engine coolant temperature sensor connector.
2. INSTALL INTAKE MANIFOLD Install the intake manifold, refer to «INSTALLATION»(ref-422105-S05336675292011092600000) .

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1. REMOVE INTAKE MANIFOLD Remove the intake manifold, refer to «REMOVAL»(ref-422105-S00548306822011092600000) .
2. REMOVE KNOCK SENSOR Disconnect the knock sensor connector. Remove the bolt and knock sensor.

1. INSTALL MANIFOLD ABSOLUTE PRESSURE SENSOR Install the manifold absolute pressure sensor with the 2 bolts. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) Connect the vacuum hose and connector.

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1. REMOVE FRONT NO. 1 FENDER APRON TO FRAME SEAL RH . Refer to «REMOVAL - Step 2»(ref-422105-S02525340462011092600000)
2. REMOVE AIR FUEL RATIO SENSOR Disconnect the air fuel ratio sensor connector. Detach the wire harness clamp. Using SST, remove the air fuel ratio sensor. SST: 09224-00010

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1. INSPECT AIR FUEL RATIO SENSOR Check the resistance. 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-) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Air Fuel Ratio Sensor) If the result is not as specified, replace the air fuel ratio sensor.

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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) TEXT IN ILLUSTRATION *1 Fulcrum Length HINT: Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench and SST based on the "without SST" torque specification, refer to «PRECAUTION»(ref-421949-S22582508442011092600000) . Make sure SST and the wrench are connected in a straight line. Attach the wire harness clamp. Connect the air fuel ratio sensor connector.
2. INSPECT FOR EXHAUST GAS LEAK . Refer to «INSTALLATION - Step 9»(ref-422105-S17535276632011092600000)
3. INSTALL FRONT NO. 1 FENDER APRON TO FRAME SEAL RH . Refer to «INSTALLATION - Step 3»(ref-422105-S17442334332011092600000)

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1. REMOVE HEATED OXYGEN SENSOR Disconnect the heated oxygen sensor connector. Using SST, remove the heated oxygen sensor. SST: 09224-00010

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1. INSPECT HEATED OXYGEN SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E2) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) If the result is not as specified, replace the heated oxygen sensor.

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1. INSTALL HEATED OXYGEN SENSOR Using SST, install the heated oxygen 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) TEXT IN ILLUSTRATION *1 Fulcrum Length HINT: Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench and SST based on the "without SST" torque specification, refer to «PRECAUTION»(ref-421949-S22582508442011092600000) . Make sure SST and the wrench are connected in a straight line. Attach the wire harness clamp. Connect the oxygen sensor connector.
2. INSPECT FOR EXHAUST GAS LEAK . Refer to «INSTALLATION - Step 9»(ref-422105-S17535276632011092600000)

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1. INSTALL POWER STEERING OIL PRESSURE SWITCH Apply a light coat of engine oil to the O-ring of the power steering oil pressure switch. Using a 19 mm deep socket wrench, install the power steering oil pressure switch. Torque: 21 N*m (210 kgf*cm, 15 ft.*lbf) NOTE: Do not allow foreign matter to contact the oil seal face of the power steering oil pressure switch (connecting surface with pressure feed tube). Be careful not to damage the O-ring when installing the power steering oil pressure switch. Connect the power steering oil pressure switch connector.
2. ADD POWER STEERING FLUID
3. BLEED AIR FROM POWER STEERING SYSTEM . Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422139-S10149224942011092600000)
4. INSPECT FOR POWER STEERING FLUID LEAK

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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 to terminals 1 and 2 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms If the result is not as specified, replace the circuit opening relay.
2. INSPECT NO. 1 INTEGRATION RELAY (IG2) Check the IG2 fuse. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IG2 fuse Always Below 1 ohms If the result is not as specified, replace the IG2 fuse. Check the IG2 relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1E-1 - 1C-4 Battery voltage not applied to terminals 1C-1 and 1C-3 10 kohms or higher Battery voltage applied to terminals 1C-1 and 1C-3 Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Integration Relay) If the result is not as specified, replace the No. 1 integration relay.
3. INSPECT NO. 1 INTEGRATION RELAY (EFI) Check the EFI fuse. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI fuse Always Below 1 ohms If the result is not as specified, replace the EFI fuse. Check the EFI relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1E-1 - 1D-4 Battery voltage not applied to terminals 1D-2 and 1D-3 10 kohms or higher Battery voltage applied to terminals 1D-2 and 1D-3 Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Integration Relay) If the result is not as specified, replace the No. 1 integration relay.
4. INSPECT NO. 1 INTEGRATION RELAY (A/F) Check the A/F fuse. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A/F fuse Always Below 1 ohms If the result is not as specified, replace the A/F fuse. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1E-1 - 1D-8 Battery voltage not applied to terminals 1D-4 and 1D-7 10 kohms or higher Battery voltage applied to terminals 1D-4 and 1D-7 Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Integration Relay) If the result is not as specified, replace the No. 1 integration relay.
5. INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) NOTE: The ACC relay and IG1 No. 1 relay are built into the main body ECU (driver side junction block). Inspect the ACC relay. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component without harness connected (Main Body ECU) - - Standard Resistance Tester Connection Condition Specified Condition 2B-17 - 2E-1 Battery voltage not applied to terminals 2C-48 and 2B-4 10 kohms or higher Battery voltage applied to terminals 2C-48 and 2B-4 Below 1 ohms If the result is not as specified, replace the main body ECU. Inspect the IG1 No. 1 relay. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component without harness connected (Main Body ECU) - - Standard Resistance Tester Connection Condition Specified Condition 2C-31 - 2E-1 Battery voltage not applied to terminals 2C-52 and 2B-4 10 kohms or higher Battery voltage applied to terminals 2C-52 and 2B-4 Below 1 ohms If the result is not as specified, replace the main body ECU.