Engine Control System (2GR-FE) (Service Information): Diagnosis Toyota Venza I

ON-VEHICLE INSPECTION

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Connect the Techstream to the DLC3. Start the engine and warm it up. Turn the Techstream on. Inspect the oil control valve (for intake camshaft). Enter the following menus: Powertrain / Engine / 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 Condition Control Range Specified Condition OFF Normal engine speed ON Rough idle or engine stalls (soon after oil control valve switched from OFF to ON) If the operation is not as specified, check the oil control valve, wire harness and ECM. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 2). 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 Condition Control Range Specified Condition OFF Normal engine speed ON Rough idle or engine stalls (soon after oil control valve switched from OFF to ON) If the operation is not as specified, check the oil control valve, wire harness and ECM. Inspect the oil control valve (for exhaust camshaft). Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (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 Condition Control Range Specified Condition -100% Normal engine speed 100% Rough idle or engine stalls (soon after oil control valve switched to 100%) If the operation is not as specified, check the oil control valve, wire harness and ECM. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 2). 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 Condition Control Range Specified Condition -100% Normal engine speed 100% Rough idle or engine stalls (soon after oil control valve switched to 100%) If the operation is not as specified, check the oil control valve, wire harness and ECM.

Scheme 65

Scheme 66

Scheme 67

1. REMOVE NO. 1 ENGINE UNDER COVER
2. REMOVE NO. 2 ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT . Refer to «REPLACEMENT - Step 4»(ref-394766-S42184332442011040800000)
4. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY Remove the windshield wiper motor and link assembly. Refer to «REMOVAL»(ref-394796-S31882693302011040800000) .
5. REMOVE COWL TOP PANEL OUTER SUB-ASSEMBLY . Refer to «REMOVAL - Step 10»(ref-394797-S13738826852011040800000)
6. REMOVE COOL AIR INTAKE DUCT SEAL . Refer to «REMOVAL - Step 18»(ref-394762-S33056477402011040800000)
7. REMOVE V-BANK COVER SUB-ASSEMBLY . Refer to «REMOVAL - Step 19»(ref-394762-S33056477402011040800000)
8. REMOVE AIR CLEANER CAP WITH HOSE See step 5
9. REMOVE INTAKE AIR SURGE TANK ASSEMBLY . Refer to «REMOVAL - Step 16»(ref-394807-S40638314452011040800000)
10. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Remove the bolt and disconnect the wire harness clamp to separate the engine wire. 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. TEXT IN ILLUSTRATION *1 O-ring

Scheme 68

Scheme 69

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Measure the resistance according to the value(s) in the table below. 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. TEXT IN ILLUSTRATION *1 Spool Valve *2 Battery Connect a battery positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and check the movement of the spool 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 If the result is not as specified, replace the oil control valve. NOTE: Accumulation of foreign matter can cause minor pressure leaks. Minor pressure leaks in the intake side oil control valve will cause the intake camshaft to advance. Minor pressure leaks in the exhaust side oil control valve will cause the exhaust camshaft to retard. The inappropriate camshaft timing that results from these leaks will cause a DTC to be set.

1. INSPECT FOR THROTTLE BODY Check the throttle control motor operating sound. Turn the ignition switch to ON. When depressing the accelerator pedal, check the operating sound of the motor. Make sure that no friction noises are 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. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Throttle Sensor Position. Depress the accelerator pedal. When the throttle valve is fully open, check that the Throttle Sensor Position value is within the specification. Standard Throttle Valve Opening Percentage Tester Display Specified Condition Throttle Sensor Position 60% or more NOTE: When checking the throttle valve opening percentage, the shift lever should be in neutral. Fully depress the accelerator pedal. If the percentage is less than 60%, replace the throttle body.

Scheme 70

Scheme 71

Scheme 72

Scheme 73

Scheme 74

Scheme 75

1. REMOVE NO. 1 ENGINE UNDER COVER
2. REMOVE NO. 2 ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT . Refer to «REPLACEMENT - Step 4»(ref-394766-S42184332442011040800000)
4. REMOVE V-BANK COVER SUB-ASSEMBLY . Refer to «REMOVAL - Step 19»(ref-394762-S33056477402011040800000)
5. REMOVE AIR CLEANER CAP WITH HOSE Disconnect the 3 hoses and hose clamp. Disconnect the mass air flow meter connector and wire harness clamp. Separate the ventilation hose. Loosen the hose clamp and separate the air cleaner cap with hose from the throttle body. Release the 3 clamps and remove the air cleaner cap with hose.
6. REMOVE THROTTLE BODY Disconnect the 2 water by-pass hoses from the throttle body. Disconnect the throttle body connector and wire harness clamp. Remove the 4 bolts, throttle body and wire harness clamp stay. Remove the gasket from the intake air surge tank assembly.

Scheme 76

1. INSPECT THROTTLE BODY 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.

Scheme 77

1. INSTALL THROTTLE BODY Install a new gasket to the intake air surge tank assembly. Install the throttle body and wire harness clamp stay to the intake air surge tank assembly with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the throttle body connector and wire harness clamp. Connect the 2 water by-pass hoses to the throttle body.
2. INSTALL AIR CLEANER CAP WITH HOSE Connect the air cleaner hose to the throttle body with the hose clamp. Install the air cleaner cap with hose to the air cleaner case with the 3 clamps. Connect the ventilation hose. Connect the wire harness clamp and mass air flow meter connector. Connect the 3 hoses and hose clamp.
3. ADD ENGINE COOLANT . Refer to «REPLACEMENT - Step 5»(ref-394766-S42184332442011040800000)
4. INSPECT FOR ENGINE COOLANT LEAK . Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-394811-S38297024892011040800000)
5. INSTALL V-BANK COVER SUB-ASSEMBLY . Refer to «INSTALLATION - Step 102»(ref-394762-S15565938342011040800000)
6. INSTALL NO. 2 ENGINE UNDER COVER
7. INSTALL NO. 1 ENGINE UNDER COVER
8. PERFORM INITIALIZATION NOTE: 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. Disconnect the cable from the negative (-) battery terminal. Wait at least 60 seconds and reconnect the cable. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION»(ref-394610-S11154682782011040800000) . 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-394619-S02527777542011040800000) . Start the engine and check that the MIL is not illuminated and that the idle speed is within the specified range when the A/C is switched off after the engine is warmed up. 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 neutral. Enter the following menus: Powertrain / Engine / Data List / 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.

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

1. REMOVE NO. 1 ENGINE UNDER COVER
2. REMOVE NO. 2 ENGINE UNDER COVER
3. 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-394610-S11154682782011040800000) .
4. REMOVE COOL AIR INTAKE DUCT SEAL . Refer to «REMOVAL - Step 18»(ref-394762-S33056477402011040800000)
5. REMOVE V-BANK COVER SUB-ASSEMBLY . Refer to «REMOVAL - Step 19»(ref-394762-S33056477402011040800000)
6. REMOVE NO. 2 AIR CLEANER INLET . Refer to «REMOVAL - Step 20»(ref-394762-S33056477402011040800000)
7. REMOVE BATTERY . Refer to «REMOVAL - Step 23»(ref-394762-S33056477402011040800000)
8. REMOVE NO. 1 AIR CLEANER INLET . Refer to «REMOVAL - Step 24»(ref-394762-S33056477402011040800000)
9. REMOVE DUTY VACUUM SWITCHING VALVE Disconnect the duty vacuum switching valve connector and the clamp. Disconnect the 3 vacuum hoses from the duty vacuum switching valve. Remove the bolt and disconnect the hose from the duty vacuum switching valve to remove it.

Scheme 83

Scheme 84

1. INSPECT DUTY VACUUM SWITCHING VALVE (OPERATION) Check the operation of the duty vacuum switching valve when positive battery voltage is applied to its terminals. Standard Condition Condition Specified Condition Positive battery voltage is not applied The air from pipe G is flowing out through pipes E and H. Positive battery voltage is applied The air from pipe F is flowing out through pipes E and H.
2. INSPECT DUTY VACUUM SWITCHING VALVE (RESISTANCE) Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Component without harness connected (Duty Vacuum Switching Valve) Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 19 to 21 ohms If the resistance is not as specified, replace the duty vacuum switching valve.

Scheme 85

1. INSTALL DUTY VACUUM SWITCHING VALVE Connect the hose to the duty vacuum switching valve and install the duty vacuum switching valve with the bolt. Torque: 4.0 N*m (41 kgf*cm, 35 in.*lbf) Connect the 3 vacuum hoses to the duty vacuum switching valve. HINT: Hose A: Large hose Hose B: Dummy hose (not used for ventilation, the other end is plugged) Connect the duty vacuum switching valve connector and clamp.
2. INSTALL NO. 1 AIR CLEANER INLET . Refer to «INSTALLATION - Step 70»(ref-394762-S15565938342011040800000)
3. INSTALL BATTERY . Refer to «INSTALLATION - Step 71»(ref-394762-S15565938342011040800000)
4. INSTALL NO. 2 AIR CLEANER INLET . Refer to «INSTALLATION - Step 74»(ref-394762-S15565938342011040800000)
5. INSTALL V-BANK COVER SUB-ASSEMBLY . Refer to «INSTALLATION - Step 102»(ref-394762-S15565938342011040800000)
6. INSTALL COOL AIR INTAKE DUCT SEAL . Refer to «INSTALLATION - Step 103»(ref-394762-S15565938342011040800000)
7. 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-394610-S11154682782011040800000) .
8. INSTALL NO. 2 ENGINE UNDER COVER
9. INSTALL NO. 1 ENGINE UNDER COVER

Scheme 86

Scheme 87

Scheme 88

1. INSPECT FRONT ENGINE MOUNTING INSULATOR ASSEMBLY Check the operation. Connect the Techstream to DLC3. Start the engine and turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the ACM Inhibit. Tester Display Test Part Control Range Diagnostic Note Control the ACM Inhibit ACM ON / OFF Test is possible while engine is idling Check if the front engine mounting insulator assembly operates in accordance with tester operation. Result Condition Specified Condition "Control the ACM Inhibit" is OFF The engine does not move (insulator operation is normal). "Control the ACM Inhibit" is ON The engine moves in accordance with insulator operation. HINT: While "Control the ACM Inhibit" is ON, the front engine mounting insulator assembly operates repeatedly. Inspect for vacuum leaks. Disconnect the vacuum hose from the front engine mounting insulator assembly. Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 25 in.Hg) and wait for 1 minute. Check that there is no change in the needle movement of the vacuum pump gauge. OK Vacuum pressure holds. Check that there is no fluid leakage caused by a break in the diaphragm. Reconnect the vacuum hose.

Scheme 89

Scheme 90

1. REMOVE RADIATOR ASSEMBLY AND FAN ASSEMBLY WITH MOTOR Remove the radiator assembly and fan assembly with motor. Refer to «REMOVAL»(ref-394766-S19353792452011040800000) .
2. REMOVE TRANSVERSE ENGINE MOUNTING BRACKET HINT: Securely support the automatic transaxle using a jack. Remove the 4 bolts and the transverse engine mounting bracket.
3. REMOVE FRONT ENGINE MOUNTING INSULATOR ASSEMBLY Disconnect the duty vacuum switching valve connector and clamp. Remove the cap, 3 nuts and front engine mounting insulator assembly.

Scheme 91

1. INSTALL FRONT ENGINE MOUNTING INSULATOR ASSEMBLY Install the front engine mounting insulator assembly with the 3 nuts. Torque: 52 N*m (530 kgf*cm, 38 ft.*lbf) Connect the duty vacuum switching valve connector and clamp.
2. INSTALL TRANSVERSE ENGINE MOUNTING BRACKET Install the transverse engine mounting bracket with the 4 bolts. TEXT IN ILLUSTRATION *1 Bolt A *2 Bolt B Torque: 87 N*m (887 kgf*cm, 64 ft.*lbf) for Bolt A Torque: 64 N*m (653 kgf*cm, 47 ft.*lbf) for Bolt B
3. INSTALL RADIATOR ASSEMBLY AND FAN ASSEMBLY WITH MOTOR Install the radiator assembly and fan assembly with motor. Refer to «INSTALLATION»(ref-394766-S24425371022011040800000) .

Scheme 92

1. INSPECT ACCELERATOR PEDAL SENSOR ASSEMBLY Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the values displayed on the Techstream. Standard Voltage Tester Display Condition Specified Condition Accel Sensor Out No. 1 Accelerator pedal is released 0.5 to 1.1 V Accelerator pedal is fully depressed 2.6 to 4.5 V Accel Sensor Out No. 2 Accelerator pedal is released 1.2 to 2.0 V Accelerator pedal is fully depressed 3.4 to 4.8 V If the result is not as specified, check the accelerator pedal sensor assembly, wire harness or ECM.

Scheme 93

1. REMOVE ACCELERATOR PEDAL SENSOR ASSEMBLY Disconnect the accelerator pedal sensor assembly connector. Remove the 2 bolts and accelerator pedal sensor assembly. NOTE: Avoid physical shocks to the accelerator pedal sensor assembly. Do not disassemble the accelerator pedal sensor assembly.

Note. Perform the MAF meter inspection according to the following procedure. Only replace the MAF meter when the MAF value in the Data List (with the engine stopped) is not within the normal operating range or there is foreign matter on the MAF meter platinum hot wire (heater).

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 MAF meter while it is installed to the air cleaner case (installed to the vehicle). During the test, do not use an exhaust air duct on the exhaust pipe. Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not run the engine). Enter the following menus: Powertrain / Engine / Data List / MAF. Wait for 30 seconds, and read the values on the Techstream. Standard Condition Tester Display Condition Specified Condition MAF Engine not running 30 seconds after ignition switch turned to ON 0.56 g/sec. or less If the result is not as specified, replace the MAF meter. If the result is within the specified range, remove and inspect the MAF meter See step 1 .

Scheme 94

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

Scheme 95

Scheme 96

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) OK 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 Component without harness connected (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 1 (THA) - 2 (E2) 20°C (68°F) 2.21 to 2.69 kohms 1 (THA) - 2 (E2) 60°C (140°F) 0.49 to 0.67 kohms If the result is not as specified, replace the mass air flow meter.