Throttle Body Carbon Accumulation Check and Cleaning
2. Throttle Body - Test
1.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
2.
Check the REL TP SENSOR in the DATA LIST with the HDS. The reading should be below 2.46 deg. If it is not, clean the throttle body.


Do not insert your fingers into the installed throttle body when you turn the vehicle to the ON mode, or while the vehicle is in ON mode. If you do, you will seriously injure your fingers if the throttle valve is activated.

1. Air Cleaner Element - Check
1.
Make sure the vehicle to the OFF (LOCK) mode.
3.
Check for damage to the air cleaner element. If the air cleaner element is damaged, replace it.

3. Throttle Body - Clean
1.
Clean off the carbon from the throttle valve and inside the throttle body with a paper towel soaked in throttle plate cleaner.
Remove the throttle body to clean it.
Be careful not to pinch your fingers.
To avoid removing the molybdenum coating, do not clean the bearing area of the throttle shaft (A).
Do not spray throttle plate cleaner directly on the throttle body.
Use a commercially available throttle plate cleaner.

7. TP POSITION CHECK - Select
1.
Select the ETCS TEST in the INSPECTION MENU with the HDS.
2.
Select TP POSITION CHECK and clear the throttle position (TP) learned value.
3.
Turn the vehicle to the OFF (LOCK) mode.
4.
Turn the vehicle to the ON mode, and wait 2 seconds without pressing the accelerator pedal.