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

Chrysler Pacifica 2008 3.8L
Chrysler Town & Country 2008-2010 3.8L
Dodge Grand Caravan 2008-2010 3.8L & 3.3L
Jeep Wrangler 2008-2011 3.8L & 3.3L