EMISSION CONTROL TO INDEX EMISSION CONTROL SYSTEM (3SZ-VE) OPERATION CHECK... LOCATION... EMISSION CONTROL SYSTEM (K3-VE)

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1 TO INDEX ENGINE EMISSION CONTROL EMISSION CONTROL SYSTEM (3SZ-VE) OPERATION CHK LOCATION EMISSION CONTROL SYSTEM (K3-VE) OPERATION CHK LOCATION OXYGEN SENSOR (3SZ-VE) COMPONENTS REMOVAL INSTALLATION INSPTION OXYGEN SENSOR (K3-VE) COMPONENTS REMOVAL INSTALLATION INSPTION OXYGEN SENSOR NO. 2 (3SZ-VE) COMPONENTS REMOVAL INSTALLATION OXYGEN SENSOR NO. 2 (K3-VE) COMPONENTS REMOVAL INSTALLATION

2 1 EMISSION CONTROL EMISSION CONTROL SYSTEM (3SZ-VE) EMISSION CONTROL SYSTEM (3SZ-VE) ENGINE CONTROL OPERATION CHK 1. AIR FUEL RATIO COMPENSATION DEVICE (a) Connect the DS-II to the DLC. (b) Select the following items following the prompts on the DS-II screen: DATA LIST / FrO2 SENSOR OUTPUT VOLTAGE / RrO2 SENSOR OUTPUT VOLTAGE. Then check that the voltage changes. (1) Maintain the engine speed at 2,500 r/min for about 2 minutes to warm up the oxygen sensor. (2) Keeping the engine speed at 2,500 r/min, check that the DS-II indicates that the voltage alternates between 0 V and 1 V. The voltage changes 8 times or more in 10 seconds. NOTICE: Perform immediately after oxygen sensor warm-up in order to ensure that the sensor does not cool down. If the tester does not indicate voltage changes, warm up the oxygen sensor again before performing this inspection. 2. DELERATION CONTROL DEVICE (a) Set the engine speed to about 3,500 r/min. (b) Using a sound scope, check the operating sound of the injector. (c) Check that the operating sound of the injector stops momentarily and then resumes once again when the accelerator pedal is released. 3. FUEL EVAPORATIVE GAS SUPPRESSION DEVICE (a) Connect the DS-II to the DLC. A (b) After starting the engine, disconnect fuel vapor feed hose No. 1 as shown in the illustration. (c) Following the prompts on the DS-II screen, select the following items: ACTIVE TEST / PURGE VSV. Then, with the VSV set to ON, check that a vacuum occurs at the VSV port. (d) If the check result is abnormal, check the following items. (1) VSV (for evap purge) (2) Clogging in the fuel vapor feed hose No. 2 (between the throttle body and VSV) (3) Engine control computer PRG voltage (e) Exit ACTIVE TEST and restore the fuel vapor feed hose No. 1. (f) Following the prompts on the DS-II screen, display the DATA LIST screen. Then select EVAP PURGE OUTPUT in order to check the purge VSV operation. (g) After sufficiently warming up the vehicle, check that the value of the data list is 0% when at idle speed.

3 EMISSION CONTROL EMISSION CONTROL SYSTEM (3SZ-VE) 2 4. VISUAL INSPTION (a) Check that there are no cracks, leaks, or damage. HINT: Removing the oil level gauge, oil filler cap, or PCV hose may cause the engine to run improperly or stall. If the parts between the throttle body and the cylinder head are dislocated, loosened, or cracked, secondary air will be sucked in and the engine may run improperly or stall. A Atmosphere Port Purge Port Tank Port A139376J01 5. CHK CHARCOAL CANISTER ASSEMBLY (a) Using a MIGHTY VAC, perform a check following the inspection procedures. (1) With the air port covered tightly (by pressing down with a finger), apply positive pressure to the tank port. There is air-flow between the tank port and the purge port. (2) With the air port covered tightly (by pressing down with a finger), apply negative pressure to the tank port. There is air-flow between the tank port and the purge port.

4 3 LOCATION EMISSION CONTROL EMISSION CONTROL SYSTEM (3SZ-VE) OXYGEN SENSOR OXYGEN SENSOR NO. 2 A137726J01

5 EMISSION CONTROL EMISSION CONTROL SYSTEM (K3-VE) 4 EMISSION CONTROL SYSTEM (K3-VE) ENGINE CONTROL OPERATION CHK 1. AIR FUEL RATIO COMPENSATION DEVICE (a) Connect the DS-II to the DLC. (b) Select the following items following the prompts on the DS-II screen: U DATA MONITOR / FrO2 SENSOR OUTPUT VOLTAGE / RrO2 SENSOR OUTPUT VOLTAGE. Then check that the voltage changes. (1) Maintain the engine speed at 2,500 r/min for about 2 minutes to warm up the oxygen sensor. (2) Keeping the engine speed at 2,500 r/min, check that the DS-II indicates that the voltage alternates between 0 V and 1 V. The voltage changes 8 times or more in 10 seconds. NOTICE: Perform immediately after oxygen sensor warm-up in order to ensure that the sensor does not cool down. If the tester does not indicate the changes of voltage, warm up the oxygen sensor again before performing this inspection. 2. DELERATION CONTROL DEVICE (a) Set the engine speed to about 3,500 r/min. (b) Using a sound scope, check the operating sound of the injector. (c) Check that the operating sound of the injector stops momentarily and then resumes once again when the accelerator pedal is released. 3. FUEL EVAPORATIVE GAS SUPPRESSION DEVICE (a) Connect the DS-II to the DLC. A (b) After starting the engine, disconnect the fuel vapor feed hose No. 1 shown in the illustration. (c) Following the prompts on the DS-II screen, select the following items: ACTIVE TEST / PURGE VSV. Then, with the VSV set to ON, check that a vacuum occurs at the VSV port. (d) If the check result is abnormal, check the following items. (1) VSV (for evap purge) (2) Clogging in the fuel vapor feed hose No. 2 (between the throttle body and VSV) (3) Engine control computer PRG voltage (e) Exit ACTIVE TEST and restore the fuel vapor feed hose No. 1. (f) Following the prompts on the DS-II screen, display the DATA LIST screen. Then select EVAP PURGE OUTPUT in order to check the purge VSV operation. (g) After sufficiently warming up the vehicle, check that the value of the data list is 0% when at idle speed.

6 5 EMISSION CONTROL EMISSION CONTROL SYSTEM (K3-VE) 4. VISUAL INSPTION (a) Check that there are no cracks, leaks, or damage. HINT: Removing the oil level gauge, oil filler cap, or PCV hose may cause the engine to run improperly or stall. If the parts between the throttle body and the cylinder head are dislocated, loosened, or cracked, secondary air will be sucked in and the engine may run improperly or stall. A Atmosphere Port Purge Port Tank Port A139376J01 5. CHK CHARCOAL CANISTER ASSEMBLY (a) Using a MIGHTY VAC, perform a check following the inspection procedures. (1) With the air port covered tightly (by pressing down with a finger), apply positive pressure to the tank port. There is air-flow between the tank port and the purge port. (2) With the air port covered tightly (by pressing down with a finger), apply negative pressure to the tank port. There is air-flow between the tank port and the purge port.

7 LOCATION EMISSION CONTROL EMISSION CONTROL SYSTEM (K3-VE) 6 OXYGEN SENSOR OXYGEN SENSOR NO. 2 A137726J01

8 7 OXYGEN SENSOR (3SZ-VE) ENGINE EMISSION CONTROL COMPONENTS EMISSION CONTROL OXYGEN SENSOR (3SZ-VE) OXYGEN SENSOR T=34{367} TIGHTENING TORQUE A135991J01

9 EMISSION CONTROL OXYGEN SENSOR (3SZ-VE) REMOVAL 1. REMOVE OXYGEN SENSOR (a) Remove the clamp and disconnect the connector. 8 (b) Using an O2 sensor socket, remove the oxygen sensor. INSTALLATION A INSTALL OXYGEN SENSOR (a) Using an O2 sensor socket, install the oxygen sensor. T = 34 N*m [367 kgf*cm] INSPTION A B E HT1A A133577J03 1. CHK OXYGEN SENSOR (a) Check the resistance of the sensor heater. (1) Using a tester, measure the resistance between terminals 2 (+B) and 1 (HT1A). 5 to 10 (when at 20 C) (b) Check for a short circuit in the sensor heater (1) Using a tester, check the continuity between terminals 1 (D14-) and 4 (D13+) of the connector. No continuity

10 9 OXYGEN SENSOR (K3-VE) ENGINE EMISSION CONTROL COMPONENTS EMISSION CONTROL OXYGEN SENSOR (K3-VE) OXYGEN SENSOR T=34{367} TIGHTENING TORQUE A135991J01

11 EMISSION CONTROL OXYGEN SENSOR (K3-VE) REMOVAL 1. REMOVE OXYGEN SENSOR (a) Remove the clamp and disconnect the connector. 10 (b) Using an O2 sensor socket, remove the oxygen sensor. INSTALLATION A INSTALL OXYGEN SENSOR (a) Using an O2 sensor socket, install the oxygen sensor. T = 34 N*m [367 kgf*cm] INSPTION A B E HT1A A133577J03 1. CHK OXYGEN SENSOR (a) Check the resistance of the sensor heater. (1) Using a tester, measure the resistance between terminals 2 (+B) and 1 (HT1A). 5 to 10 (when at 20 C) (b) Check for a short circuit in the sensor heater (1) Using a tester, check the continuity between terminals 1 (D14-) and 4 (D13+) of the connector. No continuity

12 11 EMISSION CONTROL OXYGEN SENSOR NO. 2 (3SZ-VE) OXYGEN SENSOR NO. 2 (3SZ-VE) ENGINE EMISSION CONTROL COMPONENTS Oxygen Sensor NO. 2 T=34{367 Engine Under Cover RR LH 6 T=5.4{55} Tightening Torque A135989J02

13 EMISSION CONTROL OXYGEN SENSOR NO. 2 (3SZ-VE) REMOVAL 1. REMOVE ENGINE UNDER COVER RR LH REMOVE OXYGEN SENSOR NO. 2 (a) Using an O2 sensor socket, remove the oxygen sensor No. 2. INSTALLATION A INSTALL OXYGEN SENSOR NO. 2 (a) Using an O2 sensor socket, install the oxygen sensor No. 2. T = 34 N*m [367 kgf*cm] (b) Connect the connector. 2. INSTALL ENGINE UNDER COVER RR LH (See page EM - 69) A139379

14 13 EMISSION CONTROL OXYGEN SENSOR NO. 2 (K3-VE) OXYGEN SENSOR NO. 2 (K3-VE) ENGINE EMISSION CONTROL COMPONENTS Oxygen Sensor NO. 2 T=34{367 Engine Under Cover RR LH 6 T=5.4{55} Tightening Torque A135989J02

15 EMISSION CONTROL OXYGEN SENSOR NO. 2 (K3-VE) REMOVAL 1. REMOVE ENGINE UNDER COVER RR LH REMOVE OXYGEN SENSOR NO. 2 (a) Using an O2 sensor socket, remove the oxygen sensor No. 2. INSTALLATION A INSTALL OXYGEN SENSOR NO. 2 (a) Using an O2 sensor socket, install the oxygen sensor No. 2. T = 34 N*m [367 kgf*cm] (b) Connect the connector. 2. INSTALL ENGINE UNDER COVER RR LH (See page EM - 104) A TO INDEX TO NEXT STION

EMISSION CONTROL SYSTEMS (2JZ GE) SYSTEM PURPOSE

EMISSION CONTROL SYSTEMS (2JZ GE) SYSTEM PURPOSE SYSTEM PURPOSE The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the engine ((3), (4) and (5)), to prevent the atmospheric release of blowby gascontaining