Last Modified: 11-29-2007 1.6 A
Service Category: Engine/Hybrid System Section: Engine Control
Model Year: 2008 Model: Sequoia Doc ID: RM00000283U00AX
Title: 2UZ-FE ENGINE CONTROL: THROTTLE BODY: INSTALLATION (2008 Sequoia)

INSTALLATION

1. INSTALL THROTTLE BODY ASSEMBLY

(a) Install a new gasket and the throttle body assembly with the 3 bolts and nut.

Torque: 14 N·m (143 kgf·cm, 10 ft·lbf)

(b) Connect the throttle body assembly connector.

(c) Connect the 2 water by-pass hoses.

2. INSTALL AIR CLEANER HOSE ASSEMBLY

(a) Install the air cleaner hose assembly with the 2 clamps.

Torque: 4.0 N·m (41 kgf·cm, 35 in·lbf)

HINT:

Make sure that the clamp band end is aligned with the limit mark when the hose clamp is tightened, as indicated by A and B in the illustration.

(b) Connect the vacuum hose and No. 2 ventilation hose.

3. ADD ENGINE COOLANT 2UZ-FE COOLING: COOLANT: REPLACEMENT (2008 Sequoia)+

4. INSPECT FOR ENGINE COOLANT LEAK 2UZ-FE COOLING: COOLING SYSTEM: ON-VEHICLE INSPECTION (2008 Sequoia)+

5. INSTALL THROTTLE BODY COVER SUB-ASSEMBLY

(a) Install the throttle body cover sub-assembly with the 2 nuts.

Torque: 7.5 N·m (76 kgf·cm, 66 in·lbf)

6. PERFORM INITIALIZATION

NOTICE:

  • Be sure to perform this procedure after reassembling the throttle body assembly or removing and reinstalling any throttle body component.
  • Be sure to perform this procedure after reconnecting the battery cable and replacing the ECM.

(a) Disconnect the EFI fuse and ETCS fuse the same time. Wait at least 60 seconds and reconnect the fuses.

(b) Turn the ignition switch to ON without operating the accelerator pedal.

NOTICE:

If the accelerator pedal is operated, perform the above steps again.

(c) Connect the Techstream to the DLC3 and clear the DTCs 2UZ-FE ENGINE CONTROL: SFI SYSTEM: DTC CHECK / CLEAR (2008 Sequoia) .

(d) 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

650 to 750 rpm

NOTICE:

  • Be sure to perform this step with all accessories off.
  • Make sure that the shift lever is in N or P.

(e) Enter the following menus: Powertrain/ Engine/ Data List/ Throttle Position. Sensor Output. Fully depress the accelerator pedal and check that the value is 60% or more.

(f) Perform a road test and confirm that there are no abnormalities.