8 2005 2006 toyota hilux factory service manual emission control kiem soat khi thai

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1GR-FE EMISSION CONTROL – CANISTER EC–11 INSPECTION INSPECT CHARCOAL CANISTER ASSEMBLY (a) Visually check the charcoal canister for cracks and damage If there is any cracks or damage, replace the charcoal canister assembly G036098E01 Purge Port Vent Port (b) Check the charcoal canister operation (1) While holding the purge port closed, blow air at 1.67 kPa (17.0 gf/cm2, 0.24 psi) into the vent port, and check that the air flows from the air inlet port If the result is not as specified, replace the charcoal canister assembly Air Inlet Port Air G036099E01 Purge Port Vacuum Vent Port (2) While holding the vent port closed, apply a vacuum of 1.10 kPa (8.3 mmHg, 0.32 in.Hg) into the purge port, and check that the air flows from the air inlet port If the result is not as specified, replace the charcoal canister assembly Air Inlet Port G036100E01 (c) Check for air leakage (1) Remove the air hose between ports A and B G036101E01 EC EC–12 1GR-FE EMISSION CONTROL – CANISTER Purge Port Port A Vent Port Port B Air Inlet Port (2) Connect the pressure gauge to the vent port of the charcoal canister SST 09992-00242 (3) While holding port B, the purge port and air inlet port closed with your fingers, leave port A open and apply pressurized air at 19.6 kPa (0.2 kgf/cm2, 2.81 psi) into the vent port Check that the pressure is retained If the result is not as specified, replace the charcoal canister assembly Pressure Gauge G036102E01 (d) Check the leak detection pump (1) Check that air flows from port A to ports B and C If the result is not as specified, replace the pump module C EC A Air B A092453E01 Valve Battery Closed A092454E02 (2) Apply battery positive voltage across the terminals (3) Check that the valve is closed If the result is not as specified, replace the pump module 1GR-FE EMISSION CONTROL – CANISTER EC–13 INSTALLATION INSTALL CHARCOAL CANISTER ASSEMBLY (a) Connect the fuel tank vent hose (1) Align the fuel tank vent hose connector with the pipe, then push in the fuel tank vent connector until the retainer makes a "click" sound to connect the fuel tank vent hose to the charcoal canister NOTICE: • Check that there are no scratches or foreign objects on the disconnected parts of the fuel tank vent connector and pipe before performing the work • After connecting the fuel tank vent hose, check that the fuel tank vent hose is securely connected by pulling the quick connector (b) Install the charcoal canister with the bolt and nuts Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) (c) Connect the EVAP tube (d) Connect the connector INSTALL CHARCOAL CANISTER FILTER NO.2 (a) Install the charcoal canister filter No with the nut Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) (b) Connect the breather hose to the charcoal canister (c) Engage the clamp (d) Connect the breather hose to the pipe (e) Connect the EVAP pipe to the clamp (f) Install the ABS wire harness clamp with the bolt Torque: 14 N*m (142 kgf*cm, 10 ft.*lbf) INSTALL FUEL TANK ASSEMBLY (See page FU-35) CONNECT FUEL TANK MAIN TUBE AND FUEL TANK RETURN TUBE (See page FU-36) INSTALL FUEL TANK PROTECTOR SUB-ASSEMBLY NO.1 (for Off Road Package) (See page FU-36) CONNECT CABLE TO NEGATIVE BAATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) CHECK FOR FUEL LEAKAGE EC 1GR-FE EMISSION CONTROL – DUTY VACUUM SWITCHING VALVE EC–17 INSTALLATION INSTALL DUTY VACUUM SWITCHING VALVE (a) Connect the hose to the vacuum switching valve (b) Install the vacuum switching valve with the bolt Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf) (c) Connect the vapor feed hose (d) Connect the connector INSTALL V-BANK COVER (See page ES-416) CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) EC EC–6 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION INSPECT AIR-FUEL RATIO COMPENSATION SYSTEM (a) Measure the voltage between the terminals of the ECM connectors Standard Tester Connection Condition Specified Condition A21 (A1A+) -A28 (E2) Ignition switch ON 3.3 V A31 (A1A-) -A28 (E2) Ignition switch ON 2.9 V NOTICE: Connect test leads from the back side of the connector The connectors should not be disconnected from the ECM HINT: Voltage between the terminals of the ECM is kept constant regardless of the voltage of the A/F sensor A B C D EC A1A+ A1A- E2 C095801E05 Intelligent Tester DLC3 CAN VIM G035612E02 (b) Connect the intelligent tester to the DLC3 (c) Turn the ignition switch to ON (d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / A/FS B1 S1 and O2S B1 S2 (e) Warm up the A/F sensor with the engine speed at 2,500 rpm for approximately minutes 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM EC–7 (f) Keep the engine speed at 2,500 rpm and confirm that the display, when A/FS B1 S1 is selected, is as shown in the illustration HINT: • The illustration may slightly differ from the display on the intelligent tester • Only the intelligent tester displays the waveform of the A/F sensor (g) Confirm that the display, when O2S B1 S2 is selected, changes between V and V with the engine speed at 2,500 rpm OK: The voltage output oscillates more than 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 page 05-61) Keep Engine Speed Lean Air-fuel Ratio (V) 14.6 3.3V Rich Time A118043E01 G037946E01 INSPECT FUEL CUT OFF RPM (a) Increase the engine speed to at least 3,500 rpm (b) Use a sound scope to check for injector operating sounds (c) Check that injector operating sounds stop momentarily and then resume when the accelerator pedal is released Fuel cut off rpm: 2,500 rpm Fuel return rpm: 1,200 rpm VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS (a) Check the appearance (1) Check if the indicated portions of the engine assembly are cracked, leaking or damaged HINT: Disconnection of the engine oil level gauge, oil filler cap, PCV hose, etc may cause the engine to run improperly Disconnection, slack or cracks in the air induction system parts between the throttle body and cylinder head will allow air suction and cause the engine to run improperly If necessary, repair the engine assembly EC EC–8 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM Pressure Gauge G036150E01 INSPECT FUEL CUTOFF VALVE AND FILL CHECK (a) Remove the fuel tank (see page FU-30) (b) Connect the pressure gauge to the vent hose port (c) Install the fuel tank with the vent hose disconnected (d) Fill the fuel tank with fuel (e) Apply pressure of kPa (41 gf/cm2, 0.58 psi) to the vent port of the fuel tank HINT: It is necessary to check the amount of fuel in the fuel tank (f) Remove the fuel tank cap, and check that the pressure drops If the pressure does not drop, replace the fuel tank assembly (g) Reconnect the vent line hose to the fuel tank Fuel Tank Cap G036151E01 EC Air Inlet Line Hose Air G036149E01 CHECK AIR INLET LINE (a) Disconnect the air inlet line hose from the charcoal canister (b) Check that air can flow freely into the air inlet line If air cannot flow freely into the air inlet line, repair or replace it (c) Reconnect the air inlet line hose to the charcoal canister 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM A VC (+) B E2 (-) C D Tester Connection Condition Specified Condition A18 (VC) - A28 (E2) Ignition switch ON 4.5 to 5.5 V If the voltage is not as specified, check the ECM, leak detection pump and wire harness (b) Measure the power output of the ECM connectors (1) Remove the fuel tank cap Malfunctioning Area 4.900 V 4.150 V INSPECT LEAK DETECTION PUMP (Pressure Sensor) (a) Measure the power source voltage of the ECM connectors Standard PPMP (+) Pressure Sensor Specification Output Voltage EC–9 Tester Connection Condition Specified Condition D31 (PPMP) - A28 (E2) Ignition switch ON 1.425 to 4.150 V Usable Range Malfunctioning Area If the voltage is not as specified, check the ECM, leak detection pump and wire harness (2) Install the fuel tank cap 1.425 V 0.450 V 60 kPa 110 kPa Pressure HINT: Standard Atmospheric Pressure: 101.3 kPa EC G037945E01 Voltmeter E2 VC G037940E01 INSPECT PRESSURE SENSOR (a) Check the power source voltage (1) Disconnect the pressure sensor connector (2) Turn the ignition switch to ON (3) Using a voltmeter, measure the voltage between terminals VC and E2 Voltage: 4.5 to 5.5 V EC–10 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM E2 (b) Check the supply power (1) Using SST (turbocharger pressure gauge), apply air to the turbo pressure sensor at the pressures shown in the table below SST 09992-00242 (2) Connect a voltmeter to terminals PIM and E2 of the ECM and measure the output voltage under ambient atmospheric pressure Voltage Increase PIM G037941E01 EC Applied Pressure [kPa (kgf/ cm2, psi)] Voltage Increase [V] 19.6 (0.20, 2.84) 0.1 to 0.4 39.2 (0.40, 5.69) 0.4 to 0.7 58.8 (0.60, 8.53) 0.7 to 1.0 78.5 (0.80, 11.4) 1.0 to 1.3 98.0 (1.00, 14.2) 1.3 to 1.6 INSPECT AIR PUMP ASSEMBLY (a) Check the operation (see page 05-372) EC–16 2TR-FE EMISSION CONTROL – AIR SWITCHING VALVE INSTALLATION INSTALL AIR SWITCHING VALVE ASSEMBLY (a) Install a new gasket onto the cylinder head (b) Install the air switching valve with the nuts Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) G037939E01 (c) Connect the air switching valve connector (d) Connect the vacuum hose G037938E01 INSTALL INTAKE PIPE INSULATOR (a) Install new gaskets onto the cylinder head and air switching valve (b) Install the intake pipe insulator with the nuts Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) CONNECT AIR INJECTION SYSTEM NO.1 HOSE (a) Connect the air injection system No hose to the air switching valve INSTALL EXHAUST MANIFOLD HEAT INSULATOR NO.1 (a) Install the exhaust manifold heat insulator No with the bolts Torque: 12 N*m (122 kgf*cm, ft.*lbf) EC G037937E01 G037936E01 G037935E01 EX–2 2TR-FE EXHAUST – EXHAUST PIPE REMOVAL CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE AIR FUEL RATIO SENSOR (See page EC25) REMOVE OXYGEN SENSOR (See page EC-27) REMOVE EXHAUST PIPE ASSEMBLY TAIL (a) Remove the bolts and nuts (b) Remove the exhaust pipe tail from the exhaust pipe supports (c) Remove the gasket from the exhaust pipe front REMOVE EXHAUST PIPE ASSEMBLY FRONT (a) Remove the bolts and compression springs (b) Remove the exhaust pipe front from the exhaust pipe support (c) Remove the gasket from the exhaust manifold INSTALLATION A077857E01 INSTALL EXHAUST PIPE ASSEMBLY FRONT (a) Check the free length (1) Using vernier calipers, measure the free length of the compression spring Minimum: 40.5 mm (1.594 in.) If the free length is less than the minimum, replace the compression spring (b) Using a wooden block and plastic-faced hammer, tap in a new gasket until it is flush with the exhaust manifold NOTICE: • Make sure that the gasket is in the correct angle when installing • Do not reuse the removed gasket • Never push a new gasket into the exhaust manifold by installing the exhaust pipe front into the exhaust manifold (c) Install the exhaust pipe front into the exhaust pipe support (d) Tighten the bolts and compression springs Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf) EX Wooden Block New Gasket A076194E06 INSTALL EXHAUST PIPE ASSEMBLY TAIL (a) Install a new gasket onto the exhaust pipe front (b) Install the exhaust pipe tail onto the exhaust pipe supports (c) Tighten the bolts and nuts Torque: 48 N*m (489 kgf*cm, 35 ft.*lbf) INSTALL OXYGEN SENSOR (See page EC-28) INSTALL AIR FUEL RATIO SENSOR (See page EC28) 2TR-FE EXHAUST – EXHAUST PIPE CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) CHECK FOR EXHAUST GAS LEAKAGE EX–3 EX EC–3 1GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM SYSTEM DIAGRAM ECM 18 A3 2 5 A/F Heat er Relay EFI Relay 2 18 2D 14 2D 15 2D 2N 2 E30 MREL VSV (EVAP) 2N 2N Heated Oxygen Sensor 2 30 2D 31 2D 10A EFI No +B HT2B E2 OX2B B17 HT2B 33 B17 OX2B A (Shield) 2 31 B16 PRG 33 2D B +B OX1B E2 HT1B 18 B17 OX1B 1 B17 HT1B EC Heated Oxygen Sensor B16 HA2A Air Fuel Ratio Sensor 2 15A A/F Heater 20A EFI 2D 2H HA2A A2A+ +B A2A- 23 B16 H2A+ 31 B16 A2A(Shield) 2N 2F J/C 2 1 Battery +B A1A+ HA1A A1A- 22 B16 H1A+ 30 B16 A1A- Air Fuel Ratio Sensor B16 HA1A G036227E01 EC–4 1GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM EC 11 L2 L2 B1 L2 12 L2 10 L2 L2 18 PA PE E30 MPMP A E30 VPMP 22 E30 PPMP Leak Detection Pump W1 D1 D1 28 B16 E2 W1 B W1 23 B16 VC ECM G036233E01 EC–4 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM SYSTEM DIAGRAM ECM AFHT B (+B) A/F HEATER Relay +B A1A+ HA1A A1A- A1A+ A1A- Air Fuel Ratio Sensor (Bank Sensor 2) HA1A EFI No (+B) OX1B E2 HT1B OX1B HT1B Heated Oxygen Sensor (Bank Sensor 2) E1 +B EC EVP1 PRG VSV (EVAP) VLVB A/F HEATER Fuse VGHD Leak Detection Pump MTRB VPMP MPMP SGHD VOUT VCC PPMP VC Battery Charcoal Canister Assembly E2 G038240E01 EC–5 2TR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM ECM Air Injection Control Driver BATT SIV AIRV VV SIP AIRP VP DI AIDI E Air Switching Valve +B Air Pump EC EFI No MREL AIR PUMP Battery EFI EFI Relay AIP AIP VC VC E2 E2 Pressure Sensor G038241E01 IT–3 1GR-FE INTAKE – INTAKE SYSTEM ON-VEHICLE INSPECTION INSPECT INTAKE AIR CONTROL FUNCTION Intake Air Control Valve Assembly No Vacuum Switching Valve Assembly (VSV for ACIS) A075983E02 (a) Remove the V-bank cover (b) Warm up the engine (c) Turn the ignition switch to OFF Intelligent Tester DLC3 CAN VIM G035612E02 (d) (e) (f) (g) Connect the intelligent tester to the DLC3 Start the engine and allow it to idle Turn the intelligent tester ON Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1 / ON (1) Check that the intake air control valve is pulled out If the intake air control valve does not operate, replace the VSV for ACIS or intake air surge tank (h) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1 / OFF (1) Check that the intake air control valve is returned to its original position If the intake air control valve does not operate, replace the VSV for ACIS or intake air surge tank IT IT–4 1GR-FE INTAKE – INTAKE SYSTEM (i) (j) Vacuum Gauge IT Pull Actuator Rod A076648E03 Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ENGINE SPD, THROTTLE POS, INTAKE CTL VSV1, and INTAKE CTL VSV2 (1) When depressing the accelerator pedal to the 60 % accelerator opening angle and running the engine at a speed of 2,200 to 4,100 rpm, check that the VSV is ON If the intake air control valve does not operate, replace the Vacuum Switching Valve No Release the accelerator pedal when in the condition in step (1) or when the engine is idling, and check that the VSV is OFF If the intake air control valve does not operate, replace the Vacuum Switching Valve No INSPECT INTAKE AIR CONTROL VALVE (a) Remove the V-bank cover (b) Using a 3-way connector, connect a vacuum gauge to the actuator hose (c) Start the engine (d) While the engine is idling, check that the vacuum gauge needle momentarily fluctuates up to approximately 39.9 kPa (300 mmHg, 11.8 in.Hg) (The actuator rod is pulled out.) If the intake air control valve does not operate, replace the intake air surge tank (e) Rapidly depress the accelerator pedal to the fully open position and check that the vacuum gauge needle points to kPa (0 mmHg, in.Hg) (The actuator rod is returned to its original position.) If the intake air control valve does not operate, replace the intake air surge tank INSPECTION INSPECT INTAKE AIR SURGE TANK (a) Inspect the diaphragm (1) Check that the lever moves when a vacuum of 26.6 kPa (200 mmHg) is applied with the Vacuum gage on (2) Check that the vacuum of 26.6 kPa (200 mmHg) is sustained for minute in the above state INSPECT NO VACUUM SWITCHING VALVE ASSEMBLY (a) Check the resistance (1) Using an ohmmeter, measure the resistance between the terminals Standard A075984E02 Ohmmeter G036152E01 Tester Connection Specified Condition 1-2 37 to 44 Ω at 20°C (68°F) If the result is not as specified, replace the vacuum switching valve No IT–5 1GR-FE INTAKE – INTAKE SYSTEM (b) Check the vacuum switching valve No for ground (1) Using an ohmmeter, measure the resistance between each terminal and the body Standard Ohmmeter G036153E01 Tester Connection Specified Condition - Body 10 kΩ or higher - Body 10 kΩ or higher If the result is not as specified, replace the vacuum switching valve No (c) Check the operation (1) Check that air does not flow from port E to port F If the operation is not as specified, replace the vacuum switching valve No Air E F Filter FI06393E01 (2) Apply battery voltage across the terminals (3) Check that air flows from port E to port F If the operation is not as specified, replace the vacuum switching valve No Air IT E F S004523E01 1GR-FE EXHAUST – EXHAUST PIPE EX–3 REMOVAL DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE HEATED OXYGEN SENSOR (See page EC19) REMOVE EXHAUST PIPE ASSEMBLY CENTER (a) Remove the bolts and compression springs, then separate the exhaust pipe center (b) Separate the insulators from the exhaust tail pipe, then remove the exhaust pipe center REMOVE EXHAUST FRONT PIPE ASSEMBLY NO.2 (a) Remove the bolts and nuts, then separate the exhaust front pipe No from the exhaust front pipe (b) Remove the nuts, then separate the exhaust front pipe No from the exhaust manifold LH (c) Separate the insulator, then remove the exhaust front pipe No REMOVE EXHAUST PIPE ASSEMBLY FRONT (a) Remove the nuts, then remove the exhaust front pipe EX EX–4 1GR-FE EXHAUST – EXHAUST PIPE INSTALLATION INSTALL EXHAUST PIPE ASSEMBLY FRONT (a) Install a new gasket onto the exhaust manifold RH (b) Install the exhaust front pipe with the new nuts Torque: 62 N*m (632 kgf*cm, 46 ft.*lbf) INSTALL EXHAUST FRONT PIPE ASSEMBLY NO.2 (a) Install a new gasket onto the exhaust manifold LH (b) Install a new gasket onto the exhaust front pipe (c) Install the exhaust front pipe No onto the insulator (d) Install the exhaust front pipe No onto the exhaust manifold LH with the new nuts Torque: 62 N*m (632 kgf*cm, 46 ft.*lbf) (e) Install the exhaust front pipe No onto the exhaust front pipe with the bolts and nuts Torque: 48 N*m (489 kgf*cm, 35 ft.*lbf) (f) Wooden Block New Gasket Plastic-faced Hammer Install a new gasket onto the exhaust front pipe No (1) Using a wooden block and plastic- faced hammer, tap in a new gasket until it is flush with the exhaust front pipe No NOTICE: • Make sure that the gasket is in the correct direction when installing • Do not reuse the removed gasket G036129E02 EX Vernier Calipers INSTALL EXHAUST PIPE ASSEMBLY CENTER (a) Check the free length (1) Using vernier calipers, measure the free length of the compression spring Minimum: 40.5 mm (1.594 in.) If the free length is less than the minimum, replace the compression spring (b) Install the exhaust tail pipe onto the insulators (c) Install the exhaust pipe center onto the exhaust front pipe No with the bolts and springs Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf) INSTALL HEATED OXYGEN SENSOR (See page EC19) CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) CHECK FOR EXHAUST GAS LEAKAGE A077857E06 EC–5 1GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION INSPECT AIR-FUEL RATIO COMPENSATION SYSTEM (a) Measure the voltage between the terminals of the ECM connectors Standard Tester Connection Condition Specified Condition B22 (A1A+) - A28 (E2) Ignition switch ON 3.3 V B23 (A2A+) - A28 (E2) Ignition switch ON 3.3 V B30 (A1A-) - A28 (E2) Ignition switch ON 2.9 V B31 (A2A-) - A28 (E2) Ignition switch ON 2.9 V NOTICE: Connect test leads from the back side of the connector Do not disconnect the connectors from the ECM HINT: Voltage between the terminals of the ECM is kept constant regardless of the voltage of the A/F sensor EC A B E2 C D E A2A+ A2A- A1A- A1A+ G035613E09 Intelligent Tester DLC3 CAN VIM G035612E02 (b) Connect the intelligent tester to the DLC3 (c) Turn the ignition switch to ON (d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / A/FS B1 S1 and O2S B1 S2 (e) Warm up the A/F sensor with the engine speed at 2,500 rpm for approximately minutes EC–6 1GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM (f) Maintain the engine speed at 2,500 rpm and confirm that the display on the intelligent tester, when A/FS B1 S1 is selected, is as shown in the illustration HINT: • The illustration may slightly differ from the display on the intelligent tester • Only the intelligent tester displays the waveform of the A/F sensor (g) Confirm that the waveform displayed on the intelligent tester, when O2S B1 S2 is selected, changes between V and V with the engine speed at 2,500 rpm OK: The voltage output oscillates more than 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 page 05-498) Keep Engine Speed Lean Air-fuel Ratio (V) 14.6 3.3V Rich Time A118498E01 EC A075917E01 INSPECT FUEL CUT OFF RPM (a) Increase the engine speed to at least 3,500 rpm (b) Use a sound scope to check for injector operating sounds (c) Check that injector operating sounds stop momentarily and then resume when the accelerator pedal is released Fuel cut off rpm: 2,500 rpm Fuel return rpm: 1,400 rpm VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS (a) Check the appearance (1) Check if the indicated portions of the engine assembly are cracked, leaking or damaged HINT: Disconnection of the engine oil level gauge, oil filler cap, PCV hose, etc may cause the engine to run improperly Disconnected, loose or cracked parts in the air induction system between the throttle body and cylinder head will allow air suction and cause the engine to run improperly If necessary, repair the engine assembly 1GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM Pressure Gauge G036150E01 EC–7 INSPECT FUEL CUTOFF VALVE AND FILL CHECK VALVE (a) Remove the fuel tank (see page FU-30) (b) Connect the pressure gauge to the vent hose port (c) Install the fuel tank with the vent hose disconnected (d) Fill the fuel tank with fuel (e) Apply pressure at kPa (41 gf/cm2, 0.58 psi) to the vent port of the fuel tank HINT: Check the amount of fuel left in the fuel tank (f) Remove the fuel tank cap, and check that the pressure decreases If the pressure does not decrease, replace the fuel tank assembly (g) Reconnect the vent line hose to the fuel tank Fuel Tank Cap G036151E02 Air Inlet Line Hose Air G036149E01 CHECK AIR INLET LINE (a) Disconnect the air inlet line hose from the charcoal canister (b) Check that air flows freely into the air inlet line If air does not flow freely into the air inlet line, repair or replace the air inlet line (c) Reconnect the air inlet line hose to the charcoal canister EC EC–8 1GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM A VC(+) B C E2(+) D E PPMP(+) Pressure Sensor Specification Output Voltage Malfunction Area 4.900V 4.150V Usable Range 1.425V Malfunction Area 0.450V 60 kPa 110 kPa Pressure EC HINT: Standard Atmospheric Pressure:101.3 kPa G036145E01 INSPECT LEAK DETECTION PUMP (Pressure Sensor) (a) Measure the power source voltage of the ECM connectors Standard Tester Connection Condition Specified Condition A23 (VC) - A28 (E2) Ignition switch ON 4.5 to 5.5 V If the voltage is not as specified, check the ECM, leak detection pump and wire harness (b) Measure the power output of the ECM connectors (1) Remove the fuel tank cap Standard Tester Connection Condition Specified Condition E22 (PPMP) - A28 (E2) Ignition switch ON 1.425 to 4.150 V If the voltage is not as specified, check the ECM, leak detection pump and wire harness (2) Install the fuel tank cap