Engine Control System (2GR-FE) (Service Information): Diagnosis Toyota RAV4 IV

ON-VEHICLE INSPECTION

1. CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Check the operation. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream main switch ON. Start and warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test. Operate the oil control valve using the Techstream, and then check the engine speed. Standard condition Condition Specified Condition Oil control valve is OFF Normal engine speed Oil control valve is ON Rough idling or engine stalls If the operation is not as specified, check the oil control valve, wire harness and ECM.

Scheme 703

1. REMOVE INTAKE AIR SURGE TANK ASSEMBLY Remove the intake air surge tank assembly.Refer to «REMOVAL»(ref-493471-S41687785962012081000000) .
2. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Disconnect the 4 oil control valve connectors. Remove the 4 bolts and 4 oil control valves. Remove the O-ring from each oil control valve.

Scheme 704

Scheme 705

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Measure the resistance of the oil control valve. Standard resistance Tester Connection Specified Condition 1 (+B) - 2 (GND) 6.9 to 7.9 ohms at 20°C (68°F) If the result is not as specified, replace the oil control valve assembly. Check the operation. Connect the battery's positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and check the movement of the valve. OK Condition Specified Condition Battery positive (+) voltage is applied Valve moves in black arrow direction shown in illustration Battery positive (+) voltage is cut off Valve moves in white arrow direction shown in illustration NOTE: Check that the spool valve is not stuck. HINT: The spool valve may not return if foreign objects are caught in it. This may cause subtle pressure leaks to the advance side, and a DTC may be set.

Scheme 706

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Apply a light coat of engine oil to new 4 O-rings of the oil control valves. Install the O-rings to the 4 oil control valves. Install the 4 oil control valves with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: Make sure that the O-ring is not cracked or jammed. Connect the 4 oil control valve connectors.
2. INSTALL INTAKE AIR SURGE TANK ASSEMBLY Install the intake air surge tank assembly.Refer to «INSTALLATION»(ref-493471-S10833676122012081000000) .
3. CHECK FOR ENGINE OIL LEAKS Start the engine, and check that there are no oil leaks.

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Scheme 708

1. CHECK THROTTLE BODY Check the throttle control motor operating sounds. Turn the ignition switch to ON. When pressing the accelerator pedal, check the operating sound of the running motor. Make sure that no friction noises emit from the motor. If friction noise exists, replace the throttle body. Check the throttle position sensor. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Push the Techstream main switch ON. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Sensor Position. Depress the accelerator pedal. When the throttle valve is fully opened, check that the value of Throttle Position is within the specification. Standard throttle valve opening percentage 60% or more NOTE: When checking the standard throttle valve opening percentage, the shift lever should be in the N position. If the percentage is less than 60%, replace the throttle body.

Scheme 709

Scheme 710

1. DRAIN ENGINE COOLANT .Refer to «REPLACEMENT - Step 2»(ref-493469-S00017665692012081000000)
2. PRECAUTION NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.Refer to «PRECAUTION»(ref-493289-S42810490842012081000000) .
3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
4. REMOVE V-BANK COVER SUB-ASSEMBLY .Refer to «REMOVAL - Step 14»(ref-493421-S02277901022012081000000)
5. REMOVE AIR CLEANER CAP SUB-ASSEMBLY .Refer to «REMOVAL - Step 20»(ref-493421-S02277901022012081000000)
6. REMOVE THROTTLE BODY Disconnect the 2 water by-pass hoses from the throttle body. Disconnect the control motor connector. Remove the 4 bolts and throttle body and wire harness clamp stay. Remove the gasket from the intake air surge tank.

Scheme 711

1. INSPECT THROTTLE BODY Measure the resistance of the throttle control motor. 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.

Scheme 712

1. INSTALL THROTTLE BODY Install a new gasket to the intake air surge tank. Install the throttle body and wire harness clamp stay to the intake air surge tank with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the control motor connector. Connect the 2 water by-pass hoses to the throttle body.
2. INSTALL AIR CLEANER CAP SUB-ASSEMBLY .Refer to «INSTALLATION - Step 58»(ref-493421-S12794407782012081000000)
3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
4. ADD ENGINE COOLANT .Refer to «REPLACEMENT - Step 3»(ref-493469-S00017665692012081000000)
5. CHECK FOR ENGINE COOLANT LEAKS .Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493425-S11329179852012081000000)
6. INSTALL V-BANK COVER SUB-ASSEMBLY .Refer to «INSTALLATION - Step 81»(ref-493421-S12794407782012081000000)
7. 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 MAIN fuse and ETCS fuse 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-493460-S06003279822012081000000) . 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. Sensor Output. 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.

Scheme 713

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Scheme 717

1. PRECAUTION NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work. Refer to «PRECAUTION»(ref-493289-S42810490842012081000000) .
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
3. REMOVE AIR CLEANER CAP .Refer to «REMOVAL - Step 20»(ref-493421-S02277901022012081000000)
4. REMOVE AIR CLEANER CASE .Refer to «REMOVAL - Step 21»(ref-493421-S02277901022012081000000)
5. REMOVE ECM Remove the 3 bolts of the ECM bracket. Disconnect the 2 ECM connectors. NOTE: After disconnecting the connector, make sure that dirt, water and other foreign matter does not contact the connecting part of the connector. Raise the 2 levers while pushing the locks on the 2 levers, and disconnect the 2 ECM connectors. Remove the ECM with bracket. Remove the 4 screws and 2 ECM brackets.

Scheme 718

1. INSTALL ECM Install the 2 brackets to the ECM with the 4 screws. Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf) Connect the 2 ECM connectors. NOTE: When connecting the connector, make sure that dirt, water and other foreign matter does not become stuck between the connector and other part. Connect the 2 ECM connectors and lower the 2 levers. NOTE: Make sure that the 2 levers are securely lowered. Install the ECM with the 3 bolts. Torque: 6.5 N*m (66 kgf*cm, 57 in.*lbf)
2. INSTALL AIR CLEANER CASE .Refer to «INSTALLATION - Step 57»(ref-493421-S12794407782012081000000)
3. INSTALL AIR CLEANER CAP .Refer to «INSTALLATION - Step 58»(ref-493421-S12794407782012081000000)
4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
5. PERFORM REGISTRATION When replacing the ECM, the Vehicle Identification Number (VIN) must be input into the replacement the new ECM.Refer to «REGISTRATION»(ref-493460-S26481541872012081000000) . When replacing the ECM, perform the vehicle stability control system recognition in the ECM.Refer to «REGISTRATION»(ref-493459-S26352113172012081000000) .
6. RESET MEMORY 2WD: When replacing the ECM, perform the RESET MEMORY procedure (A/T initialization).Refer to «INITIALIZATION»(ref-493476-S26536668762012081000000) . 4WD: When replacing the ECM, perform the RESET MEMORY procedure (A/T initialization).Refer to «INITIALIZATION»(ref-493461-S08646396222012081000000) .

Scheme 719

1. CHECK ACCELERATOR PEDAL ROD Check the voltage. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream ON. Enter the following menus: Powertrain / Engine and ECT / Data List. Operate the accelerator pedal, and then check that the Accel Sensor Out No. 1 and Accel Sensor Out No. 2 values are within the specifications. Standard voltage Accel Sensor Out No. 1 Accelerator Pedal Condition Specified Condition Released 0.5 to 1.1 V Depressed 2.6 to 4.5 V Accel Sensor Out No. 2 Accelerator Pedal Condition Specified Condition Released 1.2 to 2.0 V Depressed 3.4 to 5.0 V If the result is not as specified, check the accelerator pedal rod, wire harness or ECM.

Scheme 720

1. REMOVE ACCELERATOR PEDAL ROD Disconnect the accelerator pedal position sensor connector. Remove the 2 bolts and accelerator pedal rod.

Note. Perform the MAF meter inspection according to the procedures below. Only replace the MAF meter when both the LONG FT#1 value and MAF value in the DATA LIST (with the engine stopped) are not within the normal operating range.

1. INSPECT MASS AIR FLOW METER Read the value using the Techstream (MAF). NOTE: Turn off the engine. Perform the inspection with the vehicle indoors and on a level surface. Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle). During the test, do not use the exhaust air duct to perform suction on the exhaust pipe. Turn the ignition switch to ACC. Turn the ignition switch to ON (do not run the engine). Turn the Techstream ON. Select the following menu items: Powertrain / Engine and ECT / Data List / MAF. Wait 30 seconds, and read the values on the Techstream. Standard condition Less than 0.55 g/sec. If the result is not as specified, replace the MAF meter. If the result is within the specified range, inspect the cause of the extremely rich or lean air-fuel ratio.Refer to «DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2)»(ref-493462-S26320615642012081000000) .

Scheme 721

1. PRECAUTION NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work. Refer to «PRECAUTION»(ref-493289-S42810490842012081000000) .
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
3. REMOVE MASS AIR FLOW METER Disconnect the mass air flow meter connector. Remove the 2 screws and mass air flow meter.