NOTE: If you are replacing or cleaning the throttle body, start at step 1. If you are removing the throttle body, start at step 4.

Connect the HDS to the DLC while the engine is stopped.
Select the INSPECTION MENU on the HDS.
Do the TP POSITION CHECK in the ETCS TEST.
Remove the intake air duct (A).

Fig 1: Intake Air Duct And Throttle Body Connector With Water Bypass Hoses (K20Z2 Engine) With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the throttle body connector (B).
Disconnect the water bypass hoses (C), and plug them.
Disconnect the vacuum hose (D).
Remove the throttle body (E).
Install the parts in the reverse order of removal with a new gasket (F), then do this:
- Do the ECM/PCM idle learn procedure after replacing the throttle body (see ECM/PCM IDLE LEARN PROCEDURE ).
- Refill the radiator with engine coolant (see COOLANT REPLACEMENT ).

CAUTION: Do not insert your fingers into the installed throttle body when you turn the ignition switch ON (II) or while the ignition switch is ON (II). If you do, there will be serious injury to your fingers if the throttle valve is activated.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

K20Z2 engine

Use the Manual With the Right Hardware

When to See a Mechanic

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