Engine Control System (Service Information): Overview Lexus GS III рестайлинг

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1. CHECK THROTTLE BODY Check the throttle control motor operating sounds. Connect the Techstream to the DLC3. Turn the power switch ON (IG). Push the Techstream main switch ON. Enter the following menus: Powertrain / Engine / Active Test / Control the ETCS Open Slow Speed or Control the ETCS Close Slow Speed or Control the ETCS Open Fast Speed or Control the ETCS Close Fast Speed. 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 power switch ON (IG). Push the Techstream main switch ON. Enter the following menus: Powertrain / Engine / Data List / Control the ETCS Open Slow Speed or Control the ETCS Close Slow Speed or Control the ETCS Open Fast Speed or Control the ETCS Close Fast Speed. Specified Condition Tester Display Specified Condition Throttle Position Value varies according to Active Test Throttle Sensor Position Throttle Position No. 1 Throttle Position No. 2 If the result is not as specified, replace the throttle body.

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1. 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.
2. REMOVE COOL AIR INTAKE DUCT SEAL See step 5
3. DRAIN ENGINE COOLANT . Refer to «REPLACEMENT - Step 5»(ref-387077-S08483786142011022400000)
4. REMOVE ENGINE ROOM SIDE COVER RH See step 7
5. REMOVE V-BANK COVER See step 8
6. REMOVE NO. 1 AIR CLEANER INLET . Refer to «REMOVAL - Step 2»(ref-387075-S12615702712011022400000)
7. DISCONNECT NO. 2 VENTILATION HOSE Disconnect the ventilation hose from the cylinder head.
8. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE Disconnect the MAF meter connector. Disconnect the clamp from the air cleaner. Disconnect the purge line hose. Disconnect the 4 clamps. Remove the hose clamp and air cleaner cap with air cleaner hose.
9. REMOVE THROTTLE BODY Disconnect the throttle motor connector. Remove the 4 bolts and disconnect the throttle body from the intake air surge tank. Disconnect the 2 water by-pass hoses from the throttle body. Remove the throttle body and gasket.

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1. INSPECT THROTTLE BODY Measure the resistance between the terminals. Standard resistance Tester Connection Condition Specified Condition 1 (M-) - 2 (M+) 20°C (68°F) 0.3 to 100 ohms 3 (E2) - 5 (VC) 20°C (68°F) 1.2 to 3.2 kohms If the result is not as specified, replace the throttle body.

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1. INSTALL THROTTLE BODY Install a new gasket to the intake air surge tank. HINT: Align the protrusion of the gasket on the intake air surge tank. Connect the 2 water by-pass hoses to the throttle body. Install the throttle body with the 4 bolts. Torque: 10 N*m ( 102 kgf*cm, 7 ft.*lbf) Connect the throttle motor connector.
2. INSTALL AIR CLEANER CAP WITH AIR CLEANER HOSE Install the air cleaner cap with air cleaner hose assembly with the 4 clamps and hose clamp. Torque: 4.0 N*m ( 41 kgf*cm, 35 in.*lbf) HINT: Fit the protrusion on the air cleaner hose into the hole of the hose clamp on the throttle valve side. Install the purge line hose to the air cleaner hose. Connect the MAF meter connector and clamp to the air cleaner.
3. CONNECT NO. 2 VENTILATION HOSE Connect the ventilation hose to the cylinder head cover with the clamp.
4. ADD ENGINE COOLANT . Refer to «REPLACEMENT - Step 6»(ref-387077-S08483786142011022400000)
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
6. CHECK FOR ENGINE COOLANT LEAKS . Refer to «ON-VEHICLE INSPECTION - Step 1»(/lexus/gs/iii-2007-2011/remont/cooling-system-mechanical/#cooling-inspection)
7. CHECK FUNCTION OF THROTTLE BODY See step 1
8. INSTALL NO. 1 AIR CLEANER INLET . Refer to «INSTALLATION - Step 2»(ref-387075-S34017349342011022400000)
9. INSTALL V-BANK COVER See step 31
10. INSTALL ENGINE ROOM SIDE COVER RH See step 33
11. INSTALL COOL AIR INTAKE DUCT SEAL See step 34
12. PERFORM INITIALIZATION Perform initialization. Refer to «INITIALIZATION»(ref-386951-S21829001392011022400000) . NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

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See also:
• ON-VEHICLE INSPECTION - Step 1
• ON-VEHICLE INSPECTION - Step 1