New Throttle Body Assembly for 2005-2006 Scion tC 2.4L & 2004-2006 Toyota Solara 2.4L

1. Throttle body installation:

(1) Clean the installation face of the intake manifold, install the throttle body assemblyto the intake manifold interface, and tighten the screws

(2) Install water pipes and other hoses

(3) Plug in the wiring plug of the throttle body

(4) Connect the air intake hose and tighten the locking ring.

2. Matched

High idle or unsteady idle will generally occur after the throttle body is replaced, or an engine failure light;
This is because the car ECU stores the original throttle body parameters, and the newly installed throttle bpdy parameters are inconsistent with
the original;
At this point, the throttle body needs to be matched by computer. The matching process is to erase the original memory of THE ECU and start the self-learning process again.

Note:
1. Ensure that the cable plug

of the throttle body is inserted;
2. The fault code is cleared;
3. Appropriate tightness of

throttle cable. (mechanical and semi- electronic);

Remind:Install by trained

professionals.

In cases where there is no matching computer or the computer cannot match, the following manual method can be used to match.
Method 1: The negative electrode of battery line can be disconnected to eliminate the memory function of ECU, and it can be installed after 1 minute.
Method 2:Turn off the ignition switch and remove the EFI and ETCS fuses in the fuse box in the engine compartment.
The above two methods are to eliminate the memory of THE ECU. If the idle speed is still high at this time, the ECU can return to normal speed through 1 to 2 days of self-learning.

3. Common throttle body faults and causes

(1) Throttle body cannot open: accelerator pedal position sensor, throttle body motor, ECU,
Power supply and circuit, throttle body internal stuck;

(2) Insufficient throttle body opening: throttle body stuck, accelerator pedal position sensor, throttle body position sensor, safety mode;

(3) Idle low or high: throttle body stuck, excessive carbon accumulation in throttle body and inlet, leakage in intake pipe and various valve connections, initialization or idle learning not set;

4. Quality problems and phenomena of throttle body itself

(1) Incorrect intake volume of throttle body:

(Electronic and semi-electronic) throttle body Butterfly valve stuck;
Judgment method: Pull the Butterfly valve to fully open and fully closed by hand and then slowly put it back to check whether the throttle valve piece returns to the correct initial position smoothly;
Excessive carbon accumulation in inlet.

Full open state Fully closed state Too much carbon state

(2) Throttle body position sensor output signal error:
Voltage division ratio
New TPS1 TPS2

At UMA(lower mechanical stop) 10%??4% 90%??4%

At OMA(upper mechanical stop) 93%??4% 7%??4%

After lifetime

At UMA(lower mechanical stop) 10%??5% 90%??5%
At OMA(upper mechanical stop) 93%??5% 7%??5%

The signal from the sender is read out in percent on theassociated measured valve block.Hence,100%=5volts.

(3) The power line is not connected properly:

Bad contact of throttle plug;
The built-in circuit is broken or short-circuited.

5.Impact of other related accessories

In addition to the product quality problems of the throttle body itself, the failure of other related accessories will also affect the normal use or failure of the throttle body.

Fitment Chart

2003-2006 Toyota Camry 4cyl 2.4L 2AZFE
2004-2006 Toyota Solara 4cyl 2.4L 2AZFE
2003-2007 Toyota Highlander 2.4L 4cyl 2AZFE
2003-2005 Toyota Rav4 2.4L 4cyl 2AZFE
2005-2007 Scion TC 2.4L 2AZFE Engine