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

ON-VEHICLE INSPECTION

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1). Check the engine speed when the camshaft timing oil control valve is operated using the Techstream when the engine coolant temperature is 50°C (122°F) or less. OK Tester Operation Specified Condition Camshaft timing oil control valve OFF Normal engine speed Camshaft timing oil control valve ON Engine idles roughly or stalls soon after camshaft timing oil control valve switched from OFF to ON HINT: When performing the Active Test, make sure the air conditioning is on. Make sure the engine coolant temperature when the engine is started is 30°C (86°F) or less. If the result is not as specified, check the camshaft timing oil control valve, wiring and ECM.

Scheme 121

Scheme 122

1. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Detach the 2 clamps and disconnect the 2 connectors. Remove the bolt and disconnect the wiring harness clamp bracket. Disconnect the camshaft timing oil control valve connector. Remove the bolt and camshaft timing oil control valve. Remove the O-ring from the camshaft timing oil control valve.

Scheme 123

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 camshaft timing oil control valve assembly. Connect the positive (+) lead of the battery 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 left arrow direction shown in illustration Battery positive (+) voltage is cut off Valve moves in right arrow direction shown in illustration TEXT IN ILLUSTRATION *1 Spool Valve If the result is not as specified, replace the oil control valve assembly. If the valve cannot return properly because of foreign matter, a small pressure leak in the advanced direction may occur and a DTC may be stored.

Scheme 124

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Install a new O-ring to the oil control valve. TEXT IN ILLUSTRATION *1 New O-Ring Apply a light coat of engine oil to the O-ring. Install the camshaft timing oil control valve with the bolt. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Connect the camshaft timing oil control valve connector. Connect the wiring harness clamp bracket with the bolt. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Attach the 2 clamps and connect the 2 connectors.

Scheme 125

1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY Listen to the throttle control motor operating sounds. Turn the ignition switch to ON. When depressing the accelerator pedal, listen to the running sounds of the motor. Make sure no friction noises come from the motor. If friction noises exist, check the throttle body with motor, wire harness and ECM. Inspect 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 and ECT / Data List / All Date / Throttle Sensor Position. Depress the accelerator pedal. When the throttle valve is fully opened, check that the throttle position value is within the specified range. Standard 60% or more NOTE: When checking the standard throttle valve opening percentage, make sure the transmission is in neutral. If the result is not as specified, check the throttle body with motor, wire harness and ECM.

Scheme 126

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

Scheme 134

1. REMOVE FRONT BUMPER COVER LOWER . Refer to «REMOVAL - Step 5»(ref-422095-S32501303202011092600000)
2. REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY . Refer to «REMOVAL - Step 6»(ref-422095-S32501303202011092600000)
3. DRAIN ENGINE COOLANT . Refer to «REPLACEMENT - Step 4»(ref-422101-S06700870922011092600000)
4. REMOVE AIR CLEANER AND HOSE Detach the 3 clamps and disconnect the mass air flow meter connector. Detach the 4 clamps. Loosen the hose clamp and remove the air cleaner and hose.
5. REMOVE INTAKE AIR CONNECTOR Disconnect the vacuum hose from the fuel pressure regulator. Disconnect the No. 2 ventilation hose. Detach the wire harness clamp. Disconnect the connector. Disconnect the vacuum hose from the manifold absolute pressure sensor. Detach the vacuum hose. Loosen the hose clamp. Remove the 3 bolts and intake air connector.
6. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY Disconnect the water by-pass hose. Disconnect the No. 2 water by-pass hose. Disconnect the throttle position sensor and throttle control motor connector. Remove the 2 bolts, 2 nuts and throttle body with motor. Remove the gasket from the intake manifold.

Scheme 135

1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (M-) - 2 (M+) 20°C (68°F) 0.3 to 100 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Throttle Body with Motor) If the result is not as specified, replace the throttle body with motor assembly.

Scheme 136

Scheme 137

1. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY Align the protrusion of a new gasket with the groove of the intake manifold. TEXT IN ILLUSTRATION *1 Protrusion *2 Groove Install a new gasket to the intake manifold. Install the throttle body with motor with the 2 bolts and 2 nuts. Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf) Connect the water by-pass hose. Connect the No. 2 water by-pass hose. Connect the throttle position sensor and throttle control motor connector.
2. INSTALL INTAKE AIR CONNECTOR Install the intake air connector with the 3 bolts. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Tighten the hose clamp. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) Attach the vacuum hose. Connect the vacuum hose to the manifold absolute pressure sensor. Connect the connector. Attach the wire harness clamp. Connect the No. 2 ventilation hose. Connect the vacuum hose to the fuel pressure regulator.
3. INSTALL AIR CLEANER AND HOSE Install the air cleaner and hose, align its matchmark with the matchmark of the air cleaner cap as shown in the illustration. TEXT IN ILLUSTRATION *1 Matchmark *a Upper Side *b Front Tighten the hose clamp. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) Attach the 4 clamps. Attach the 3 clamps and connect the mass air flow meter connector.
4. ADD ENGINE COOLANT . Refer to «REPLACEMENT - Step 5»(ref-422101-S06700870922011092600000)
5. INSPECT FOR COOLANT LEAK . Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422099-S36732379972011092600000)
6. INSTALL NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY . Refer to «INSTALLATION - Step 50»(ref-422095-S20738551022011092600000)
7. INSTALL FRONT BUMPER COVER LOWER . Refer to «INSTALLATION - Step 51»(ref-422095-S20738551022011092600000)
8. 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 and after replacing the ECM. Disconnect the cable from the negative (-) battery terminal. Wait at least 60 seconds and reconnect the cable. 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-421953-S17634125332011092600000) . 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. Engine Idle Speed Condition Specified Condition 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 and ECT / 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 138

Scheme 139

Scheme 140

Scheme 141

1. REMOVE LOWER INSTRUMENT PANEL SUB-ASSEMBLY Remove the lower instrument panel, refer to «REMOVAL»(ref-422137-S17054790512011092600000) .
2. REMOVE ECM Disconnect the 6 connectors. Remove the bolt, nut and ECM.
3. REMOVE ECM BRACKET Remove the 2 screws and ECM bracket.
4. REMOVE NO. 2 ECM BRACKET Remove the 2 screws and No. 2 ECM bracket.

1. INSPECT ACCELERATOR PEDAL POSITION SENSOR ASSEMBLY 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 / ETCS / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the value displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 5.3 V If the result is not as specified, check the wire harness and connector. If the wire harness and connector are normal, replace the accelerator pedal position sensor.

Scheme 142

1. REMOVE ACCELERATOR PEDAL POSITION SENSOR ASSEMBLY Disconnect the accelerator pedal position sensor connector. Remove the 2 nuts and accelerator pedal position sensor.

INSPECTION

1. INSPECT CAMSHAFT POSITION SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (G+) - 2 (G-) Cold 835 to 1400 ohms Hot 1060 to 1645 ohms NOTE: In the above, the terms "Cold" and "Hot" refer to the temperature of the sensor. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F). If the result is not as specified, replace the camshaft position sensor.

Scheme 143

1. INSTALL CAMSHAFT POSITION SENSOR Apply a light coat of engine oil to the O-ring of the camshaft position sensor. TEXT IN ILLUSTRATION *1 O-Ring Install the camshaft position sensor with the bolt. Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) NOTE: Make sure that the O-ring is not cracked or jammed when installing it. Connect the camshaft position sensor connector.

Scheme 144

Scheme 145

Scheme 146

1. REMOVE FAN SHROUD Remove the fan shroud, refer to «REMOVAL»(ref-422101-S04068459892011092600000) .
2. DISCONNECT VANE PUMP ASSEMBLY . Refer to «REMOVAL - Step 25»(ref-422095-S32501303202011092600000)
3. DISCONNECT COOLER COMPRESSOR ASSEMBLY . Refer to «REMOVAL - Step 26»(ref-422095-S32501303202011092600000)
4. REMOVE NO. 1 COMPRESSOR MOUNTING BRACKET . Refer to «REMOVAL - Step 5»(ref-422097-S14084840672011092600000)
5. REMOVE CRANKSHAFT POSITION SENSOR Disconnect the crankshaft position sensor connector and detach the wire harness clamp. Remove the bolt and crankshaft position sensor.

Scheme 147

1. INSPECT CRANKSHAFT POSITION SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (NE+) - 2 (NE-) Cold 1630 to 2740 ohms Hot 2065 to 3225 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Crankshaft Position Sensor) NOTE: In the chart above, the terms "Cold" and "Hot" refer to the temperature of the sensor. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F). If the result is not as specified, replace the crankshaft position sensor.

Scheme 148

1. INSTALL CRANKSHAFT POSITION SENSOR Apply a light coat of engine oil to the O-ring of the crankshaft position sensor. TEXT IN ILLUSTRATION *1 O-Ring Install the crankshaft position sensor with the bolt. Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) NOTE: Make sure that the O-ring is not cracked or jammed when installing it. Connect the crankshaft position sensor connector and attach the wire harness clamp.
2. INSTALL NO. 1 COMPRESSOR MOUNTING BRACKET . Refer to «INSTALLATION - Step 16»(ref-422097-S00540834262011092600000)
3. CONNECT COOLER COMPRESSOR ASSEMBLY . Refer to «INSTALLATION - Step 16»(ref-422095-S20738551022011092600000)
4. CONNECT VANE PUMP ASSEMBLY . Refer to «INSTALLATION - Step 17»(ref-422095-S20738551022011092600000)
5. INSTALL FAN SHROUD Install the fan shroud, refer to «INSTALLATION»(ref-422101-S42660285242011092600000) .

Scheme 149

Scheme 150

Scheme 151

Scheme 152

1. REMOVE AIR CLEANER AND HOSE See step 4
2. REMOVE INTAKE AIR CONNECTOR See step 5
3. REMOVE IGNITION COIL ASSEMBLY Disconnect the 4 ignition coil connectors. Remove the 4 bolts and 4 ignition coils.
4. REMOVE SPARK PLUG Using a 16 mm spark plug wrench, remove the 4 spark plugs.

1. INSPECT KNOCK SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (Ground) - 2 (Output) 20°C (68°F) 120 to 280 kohms If the result is not as specified, replace the knock sensor.

Scheme 153

1. INSTALL KNOCK SENSOR Install the knock sensor with the bolt. Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) TEXT IN ILLUSTRATION Front NOTE: Make sure that the knock sensor is at the correct angle when installing it. Connect the knock sensor connector.
2. INSTALL INTAKE MANIFOLD Install the intake manifold, refer to «INSTALLATION»(ref-422105-S05336675292011092600000) .

Scheme 154

Scheme 155

Scheme 156

1. INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR Inspect the power source voltage. Disconnect the manifold absolute pressure sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition 3 (VC) - 1 (E2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Manifold Absolute Pressure Sensor) If the result is not as specified, inspect the wire harness and ECM. Turn the ignition switch off. Connect the manifold absolute pressure sensor connector. Check the pressure. Connect a pressure gauge to the manifold absolute pressure sensor as shown in the illustration. Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Air Pump Pressure (absolute). Check that the pressure displayed on the Techstream fluctuates when applying pressure to the pressure sensor with the pressure gauge. OK Pressure fluctuates in response to pressure applied with pressure gauge. HINT: The Techstream displays the air pump pressure (Air Pump Pressure (absolute) as absolute pressure. If the result is not as specified, replace the manifold absolute pressure sensor.

Scheme 157

Scheme 158

1. REMOVE MANIFOLD ABSOLUTE PRESSURE SENSOR Disconnect the connector and vacuum hose. Remove the 2 bolts and manifold absolute pressure sensor.

1. INSPECT POWER STEERING OIL PRESSURE SWITCH Check the power steering oil pressure switch. 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 / Power Steering Signal. Start the engine. Read the value displayed on the Techstream. OK Condition Specified Condition Power steering operating ON Power steering not operating OFF If the result is not as specified, check the wire harness and connector. If the wire harness and connector are normal, replace the power steering oil pressure switch.

Scheme 159

1. DRAIN POWER STEERING FLUID
2. REMOVE POWER STEERING OIL PRESSURE SWITCH Disconnect the power steering oil pressure switch connector. Using a 19 mm deep socket wrench, remove the power steering oil pressure switch.